This study investigated the effects of spinal cord injury on the bladder tissue of rats. Twenty rats were divided into a control group and spinal cord injury (SCI) group. The SCI group exhibited statistically higher levels of oxidative stress markers (MDA, MPO), epithelial degeneration, vascular dilation, inflammation, and expression of VEGF and APAF-1 compared to the control group. The SCI group also had lower levels of the antioxidant GSH. Histological examination of the SCI group showed degeneration of epithelial cells, thickened fibrosis, dilated blood vessels, and increased VEGF and APAF-1 expression compared to the control group. The results suggest that spinal cord injury leads to increased oxidative stress, inflammation and apoptosis in
Objective: To study the effects of resveratrol in neuronal structures in traumatic brain injury (TBI).
Study Design: Thirty rats were categorized as (1) control group (n=10), saline solution administered i.p. for 14 days, (2) TBI group (n=10), trauma induced by weight-drop model on brain, and (3) TBI+Resveratrol group (n=10), 15 minutes after injury the rats were given resveratrol (10 μmoL/kg/i.p.) for 14 days. At the end of the experiment the cerebellum was excised for routine paraffin tissue protocol. Blood samples were tested for serum biochemical markers (MDA, SOD, CAT, and GSH-x).
Results: SOD, GPx, and CAT values were lowest in the TBI group. MDA and histological scores of dilations in vessels, inflammation, degeneration in neurons, apoptosis in microglia, ADAMTS8, and GFAP expressions were highest in the TBI group. Sections of the control group showed normal cerebellar histology. The trauma group showed degenerated ganglion layer, pyknotic and apoptotic Purkinje cell nuclei. Vascular thrombus was seen in the substantia alba and substantia grisea. In the Trauma+Resveratrol group, most pa- thologies observed in the TBI group were improved. In the control group, GFAP protein was expressed in granular cells, axons, dendrites, Purkinje cells, and microglia cells. In the trauma group, increased GFAP expression was observed in glial processes, neurons, and Purkinje cells. In the Trauma+Resveratrol group, GFAP was expressed in molecular layer and glial processes. In the control group, ADAMTS-4 activity was observed in granulosa layer, glial cells, and Purkinje cells. In the trauma group, ADAMTS-4 expression was positive in Purkinje cells and glial cells. In the Trauma+ Resveratrol group, ADAMTS-4 was expressed in Purkinje cells, granular cells, and glial cells.
Conclusion: GFAP and ADAMTS-4 proteins may be involved in regeneration of damaged astroglial cells and other glial cells, Purkinje cells, and synaptic extensions. We suggest that antioxidative drugs such as resveratrol may be alternative target agents in neurological disease.
Keywords: ADAMTS-4, brain, cerebellum, GFAP, rat, resveratrol, traumatic brain injury
This study investigated the effects of gallic acid on testicular injury caused by ischemia-reperfusion in a rat testicular torsion model. Forty rats were divided into four groups: a control group, a torsion group, a torsion/detorsion group, and a torsion/detorsion plus gallic acid group. Biochemical markers and immunohistochemical staining for caspase-3 and TNF-α were analyzed. The results showed that gallic acid treatment decreased oxidative stress markers, reduced apoptosis and inflammation, and helped protect testicular tissue compared to the torsion/detorsion group without treatment. The study suggests that gallic acid may be a potential therapeutic agent for testicular ischemia-reperfusion injury.
Objective: To investigate the effect of sildenafil on reducing the impact of hepatic ischemia/reperfusion (HIR) injury established by Pringle maneuver on the heart of rats.
Study Design: Forty Wistar albino rats were divided into 4 groups: Sham (laparotomy only), Control (laparotomy following sildenafil application), IR (ischemia/reperfusion injured by HIR), and IR+SIL (injured by HIR following sildenafil application). Ischemia was developed by clamping the hepatoduodenal ligament for 30 minutes; then reperfusion was applied for 30 minutes. Sildenafil (single dose of 50 mg/kg) was administered by oral gavage for 15 minutes before ischemia. Blood samples of rats were collected from Sham and Control groups at 60 minutes and from IR and IR+SIL groups at 30 minutes after initiation of reperfusion for biochemical analysis. Meanwhile, heart tissues were sampled for biochemical analysis. Malondialdehyde (MDA) and total antioxidant capacity (TAC) in serum samples and TAC, total oxidative capacity (TOC), and oxidative stress index in heart tissues were examined biochemically.
Results: Serum MDA levels were elevated significantly in the IR and IR+SIL groups as compared to the sham group. Sildenafil treatment inhibited MDA increase considerably in the IR+SIL group as compared to the IR group. Serum TAC levels were elevated significantly in the sildenafil and control groups (compared with sham groups) and in the IR+SIL group (compared with the IR group). TAC levels detected in heart tissue increased significantly in the IR group as compared to the sham group; however, sildenafil treatment had no effect on this increase.
Conclusion: Heart tissue was affected by HIR. It was revealed that sildenafil treatment may prevent the oxidative stress via increasing serum TAC levels in both control and IR+SIL groups.
The study investigated the protective effects of losartan, an angiotensin II type 1 receptor blocker, on intestinal ischemia-reperfusion injury in rats. Forty rats were divided into four groups: sham operation, ischemia, ischemia/reperfusion (I/R), and I/R + losartan treatment. Biochemical markers and histopathological analysis of the jejunum tissue were performed. Losartan treatment reduced oxidative stress markers, inflammation, and apoptosis compared to the I/R group. This suggests losartan may protect against intestinal damage caused by ischemia-reperfusion injury.
Objective: To evaluate the results of the effect of nebivolol on tibial bone defect and graft application in new bone development in the rat.
Study Design: Thirty Wistar albino rats were divided into 3 groups. In the Control group, tibia bone defect was created without any treatment. In the Defect+ Graft group, allograft treatment was performed by forming a 6 mm tibial bone defect. In the Defect+Graft+ Nebivolol group, alloplastic bone graft was placed in the calvarial bone defect and then nebivolol (0.34 mg/mL solution/day) treatment was intraperitoneally applied for 28 days.
Results: Histopathological examination revealed inflammation in the defect area, congestion in the vessels, degeneration in collagen fibers, and an increase in osteoclast cells. There was an increase in inflammation and blood vessel structure in graft application, and osteoblastic activity matrix formation after reorganization nebivolol application in collagen fibers. Osteonectin expression was positive in the collagen fiber and matrix, starting in the Graft group, in osteoblasts, whereas in the Nebivolol group, osteoblasts increased in osteocytes and new bone formation.
Conclusion: Nebivolol is thought to have a positive effect on osteoinductive bone growth factors and contribute to the cell-matrix interaction, in addition to the supporting effect of the graft with its antioxidative effect.
Keywords: allograft; bone; bone regeneration; disease models, animal; nebivolol; orthopedic procedures; osteonectin; rats; tibia; tibial defect
Objective: To investigate the immunohistochemical staining of hypoxia-inducible factor 1-alpha (HIF-1α) and Ki-67 expression in the placenta of pregnant women with placenta previa and placenta accreta.
Study Design: Thirty placentas (10 normotensive, 10 placenta previa, and 10 placenta accreta) were processed for routine histological tissue processing. The biochemical parameters of patients were recorded. Placentas were stained with hematoxylin-eosin and HIF-1α and Ki-67 immunostaining.
Results: Normal histology was observed in placentas of normotensive pregnant women. Placenta previa sections showed increased syncytial knots, intervillous hemorrhage, fibrin accumulation, and hyalinization. In placenta accreta sections, increased syncytial nodes, vascular dilation/congestion, fibrin accumulation, and hyalinization were observed. Normotensive placentas showed no HIF-1α expression. In placenta previa tissues, high HIF-1α expression was observed in vascular endothelial cells, villous stromal cells, and syncytial knots. High HIF-1α expression was recorded in villous stromal cells and cytotrophoblast cells in placenta accreta. In normotensive placental tissues, no Ki-67 expression was observed. In placenta previa sections, high Ki-67 expression was observed mostly in root villi stromal cells and some endothelial cells. High Ki-67 expression was observed mostly in villi stromal cells of placenta accreta.
Conclusion: It is thought that HIF-1α is an important regulatory gene in the development of villus in trophoblast invasion such as placenta accreta and previa, while Ki-67 will play a key role in the development of abnormal placenta with its stimulating effect on inflammatory cell development and angiogenesis in accreta and preeclampsia.
Objective: To investigate the changes in the retina due to deltamethrin toxicity and the process in cell inflammation and apoptosis.
Study Design: Sixteen Wistar albino rats were randomly divided into two groups as control (n=8) and deltamethrin (n=8) groups. Saline was given to the control group, and 0.5 mL of 5 mg/kg deltamethrin was given to the deltamethrin group for 14 days each. Blood was collected for biochemical analysis. Retinal tissue was processed for histological examination.
Results: Compared to the control group, MDA levels were high while GSH and CAT levels were low in the deltamethrin group. Histopathological analysis showed spaces between the pigment epithelium, irregularity in the delimiting membrane, degenerated ganglion, cone and bacillus cell, pyknotic nuclei, thinned inner limitation membrane, and thickened vascular wall. The control group showed FAS expression in the pigment layer limiting membranes, in the nuclei of many cone and bacillus cells, and ganglion cells in the control group sections. In the deltamethrin group, FAS expression was observed in the inner and outer limiting membranes of the pigment epithelium, cone and bacillus cells, and ganglion cell nuclei. In the control group, negative NOS expression in the pigment epithelium and outer limiting membranes, internal limitation membrane, and ganglion cells in the cone and bacillus cell nuclei were observed. In the deltamethrin group, NOS expression was positive in the pigment epithelium, cone and bacillus, and ganglion cell nuclei.
Conclusion: We suggest that deltamethrin toxicity induced apoptotic process due to increased inflammation in the retina and may cause visual impairment as a result of neural damage.
Keywords: deltamethrin, FAS, insecticides, NOS, nitric oxide synthase, retina
Objective: To evaluate the antibacterial effects of 4 different cavity disinfectants on Streptococcus mutans, Lactobacillus acidophilus, and Enterococcus faecalis bacteria in different time periods.
Study Design: The antibacterial effects of Cavity Cleanser, Tubulicid Red Label, Chloraxid 2%, and Oxygenated Water cavity disinfectant solutions on E. faecalis (ATCC 29212), S. mutans (ATCC 25175), and L. acidophilus (RSKK 03037) bacterial strains were evaluated by disk diffusion method. In the study where vancomycin antibiogram disc constituted the positive control group, physiological saline solution was used as the negative control group. Standard, sterile, blank antibiogram discs of 5 mm in diameter, in which 15 μL of each material were added, were placed on agar plates at 2.5–3 cm intervals. The inhibition zone diameters formed around the discs that were left to incubate for 24–48 hours at 37°C were measured in millimeters. Statistical analysis of the data was performed using one-way analysis of variance, Kolmogorov-Smirnov, Levene, and Bonferroni tests.
Results: At the end of the study the solutions tested showed a statistically significant antibacterial effect on all bacterial strains used (p<0.05). Cavity Cleanser disinfectant containing 2% chlorhexidine showed the highest antibacterial effect on S. mutans and L. acidophilus, and benzalkonium-containing Tubulicid Red disinfectant on E. faecalis.
Conclusion: The antibacterial effect of all cavity disinfectants used in the study was found to be higher at the end of the 48th hour than at the end of the 24th hour, but there was no statistically significant difference (p>0.05).
Keywords: antibacterial agents; antibacterial effect; cavity disinfectants; chlorhexidine; contamination; dental caries; disinfection; disc diffusion; gram-negative bacteria; gram-positive bacteria
Objective: To study the effects of resveratrol in neuronal structures in traumatic brain injury (TBI).
Study Design: Thirty rats were categorized as (1) control group (n=10), saline solution administered i.p. for 14 days, (2) TBI group (n=10), trauma induced by weight-drop model on brain, and (3) TBI+Resveratrol group (n=10), 15 minutes after injury the rats were given resveratrol (10 μmoL/kg/i.p.) for 14 days. At the end of the experiment the cerebellum was excised for routine paraffin tissue protocol. Blood samples were tested for serum biochemical markers (MDA, SOD, CAT, and GSH-x).
Results: SOD, GPx, and CAT values were lowest in the TBI group. MDA and histological scores of dilations in vessels, inflammation, degeneration in neurons, apoptosis in microglia, ADAMTS8, and GFAP expressions were highest in the TBI group. Sections of the control group showed normal cerebellar histology. The trauma group showed degenerated ganglion layer, pyknotic and apoptotic Purkinje cell nuclei. Vascular thrombus was seen in the substantia alba and substantia grisea. In the Trauma+Resveratrol group, most pa- thologies observed in the TBI group were improved. In the control group, GFAP protein was expressed in granular cells, axons, dendrites, Purkinje cells, and microglia cells. In the trauma group, increased GFAP expression was observed in glial processes, neurons, and Purkinje cells. In the Trauma+Resveratrol group, GFAP was expressed in molecular layer and glial processes. In the control group, ADAMTS-4 activity was observed in granulosa layer, glial cells, and Purkinje cells. In the trauma group, ADAMTS-4 expression was positive in Purkinje cells and glial cells. In the Trauma+ Resveratrol group, ADAMTS-4 was expressed in Purkinje cells, granular cells, and glial cells.
Conclusion: GFAP and ADAMTS-4 proteins may be involved in regeneration of damaged astroglial cells and other glial cells, Purkinje cells, and synaptic extensions. We suggest that antioxidative drugs such as resveratrol may be alternative target agents in neurological disease.
Keywords: ADAMTS-4, brain, cerebellum, GFAP, rat, resveratrol, traumatic brain injury
This study investigated the effects of gallic acid on testicular injury caused by ischemia-reperfusion in a rat testicular torsion model. Forty rats were divided into four groups: a control group, a torsion group, a torsion/detorsion group, and a torsion/detorsion plus gallic acid group. Biochemical markers and immunohistochemical staining for caspase-3 and TNF-α were analyzed. The results showed that gallic acid treatment decreased oxidative stress markers, reduced apoptosis and inflammation, and helped protect testicular tissue compared to the torsion/detorsion group without treatment. The study suggests that gallic acid may be a potential therapeutic agent for testicular ischemia-reperfusion injury.
Objective: To investigate the effect of sildenafil on reducing the impact of hepatic ischemia/reperfusion (HIR) injury established by Pringle maneuver on the heart of rats.
Study Design: Forty Wistar albino rats were divided into 4 groups: Sham (laparotomy only), Control (laparotomy following sildenafil application), IR (ischemia/reperfusion injured by HIR), and IR+SIL (injured by HIR following sildenafil application). Ischemia was developed by clamping the hepatoduodenal ligament for 30 minutes; then reperfusion was applied for 30 minutes. Sildenafil (single dose of 50 mg/kg) was administered by oral gavage for 15 minutes before ischemia. Blood samples of rats were collected from Sham and Control groups at 60 minutes and from IR and IR+SIL groups at 30 minutes after initiation of reperfusion for biochemical analysis. Meanwhile, heart tissues were sampled for biochemical analysis. Malondialdehyde (MDA) and total antioxidant capacity (TAC) in serum samples and TAC, total oxidative capacity (TOC), and oxidative stress index in heart tissues were examined biochemically.
Results: Serum MDA levels were elevated significantly in the IR and IR+SIL groups as compared to the sham group. Sildenafil treatment inhibited MDA increase considerably in the IR+SIL group as compared to the IR group. Serum TAC levels were elevated significantly in the sildenafil and control groups (compared with sham groups) and in the IR+SIL group (compared with the IR group). TAC levels detected in heart tissue increased significantly in the IR group as compared to the sham group; however, sildenafil treatment had no effect on this increase.
Conclusion: Heart tissue was affected by HIR. It was revealed that sildenafil treatment may prevent the oxidative stress via increasing serum TAC levels in both control and IR+SIL groups.
The study investigated the protective effects of losartan, an angiotensin II type 1 receptor blocker, on intestinal ischemia-reperfusion injury in rats. Forty rats were divided into four groups: sham operation, ischemia, ischemia/reperfusion (I/R), and I/R + losartan treatment. Biochemical markers and histopathological analysis of the jejunum tissue were performed. Losartan treatment reduced oxidative stress markers, inflammation, and apoptosis compared to the I/R group. This suggests losartan may protect against intestinal damage caused by ischemia-reperfusion injury.
Objective: To evaluate the results of the effect of nebivolol on tibial bone defect and graft application in new bone development in the rat.
Study Design: Thirty Wistar albino rats were divided into 3 groups. In the Control group, tibia bone defect was created without any treatment. In the Defect+ Graft group, allograft treatment was performed by forming a 6 mm tibial bone defect. In the Defect+Graft+ Nebivolol group, alloplastic bone graft was placed in the calvarial bone defect and then nebivolol (0.34 mg/mL solution/day) treatment was intraperitoneally applied for 28 days.
Results: Histopathological examination revealed inflammation in the defect area, congestion in the vessels, degeneration in collagen fibers, and an increase in osteoclast cells. There was an increase in inflammation and blood vessel structure in graft application, and osteoblastic activity matrix formation after reorganization nebivolol application in collagen fibers. Osteonectin expression was positive in the collagen fiber and matrix, starting in the Graft group, in osteoblasts, whereas in the Nebivolol group, osteoblasts increased in osteocytes and new bone formation.
Conclusion: Nebivolol is thought to have a positive effect on osteoinductive bone growth factors and contribute to the cell-matrix interaction, in addition to the supporting effect of the graft with its antioxidative effect.
Keywords: allograft; bone; bone regeneration; disease models, animal; nebivolol; orthopedic procedures; osteonectin; rats; tibia; tibial defect
Objective: To investigate the immunohistochemical staining of hypoxia-inducible factor 1-alpha (HIF-1α) and Ki-67 expression in the placenta of pregnant women with placenta previa and placenta accreta.
Study Design: Thirty placentas (10 normotensive, 10 placenta previa, and 10 placenta accreta) were processed for routine histological tissue processing. The biochemical parameters of patients were recorded. Placentas were stained with hematoxylin-eosin and HIF-1α and Ki-67 immunostaining.
Results: Normal histology was observed in placentas of normotensive pregnant women. Placenta previa sections showed increased syncytial knots, intervillous hemorrhage, fibrin accumulation, and hyalinization. In placenta accreta sections, increased syncytial nodes, vascular dilation/congestion, fibrin accumulation, and hyalinization were observed. Normotensive placentas showed no HIF-1α expression. In placenta previa tissues, high HIF-1α expression was observed in vascular endothelial cells, villous stromal cells, and syncytial knots. High HIF-1α expression was recorded in villous stromal cells and cytotrophoblast cells in placenta accreta. In normotensive placental tissues, no Ki-67 expression was observed. In placenta previa sections, high Ki-67 expression was observed mostly in root villi stromal cells and some endothelial cells. High Ki-67 expression was observed mostly in villi stromal cells of placenta accreta.
Conclusion: It is thought that HIF-1α is an important regulatory gene in the development of villus in trophoblast invasion such as placenta accreta and previa, while Ki-67 will play a key role in the development of abnormal placenta with its stimulating effect on inflammatory cell development and angiogenesis in accreta and preeclampsia.
Objective: To investigate the changes in the retina due to deltamethrin toxicity and the process in cell inflammation and apoptosis.
Study Design: Sixteen Wistar albino rats were randomly divided into two groups as control (n=8) and deltamethrin (n=8) groups. Saline was given to the control group, and 0.5 mL of 5 mg/kg deltamethrin was given to the deltamethrin group for 14 days each. Blood was collected for biochemical analysis. Retinal tissue was processed for histological examination.
Results: Compared to the control group, MDA levels were high while GSH and CAT levels were low in the deltamethrin group. Histopathological analysis showed spaces between the pigment epithelium, irregularity in the delimiting membrane, degenerated ganglion, cone and bacillus cell, pyknotic nuclei, thinned inner limitation membrane, and thickened vascular wall. The control group showed FAS expression in the pigment layer limiting membranes, in the nuclei of many cone and bacillus cells, and ganglion cells in the control group sections. In the deltamethrin group, FAS expression was observed in the inner and outer limiting membranes of the pigment epithelium, cone and bacillus cells, and ganglion cell nuclei. In the control group, negative NOS expression in the pigment epithelium and outer limiting membranes, internal limitation membrane, and ganglion cells in the cone and bacillus cell nuclei were observed. In the deltamethrin group, NOS expression was positive in the pigment epithelium, cone and bacillus, and ganglion cell nuclei.
Conclusion: We suggest that deltamethrin toxicity induced apoptotic process due to increased inflammation in the retina and may cause visual impairment as a result of neural damage.
Keywords: deltamethrin, FAS, insecticides, NOS, nitric oxide synthase, retina
Objective: To evaluate the antibacterial effects of 4 different cavity disinfectants on Streptococcus mutans, Lactobacillus acidophilus, and Enterococcus faecalis bacteria in different time periods.
Study Design: The antibacterial effects of Cavity Cleanser, Tubulicid Red Label, Chloraxid 2%, and Oxygenated Water cavity disinfectant solutions on E. faecalis (ATCC 29212), S. mutans (ATCC 25175), and L. acidophilus (RSKK 03037) bacterial strains were evaluated by disk diffusion method. In the study where vancomycin antibiogram disc constituted the positive control group, physiological saline solution was used as the negative control group. Standard, sterile, blank antibiogram discs of 5 mm in diameter, in which 15 μL of each material were added, were placed on agar plates at 2.5–3 cm intervals. The inhibition zone diameters formed around the discs that were left to incubate for 24–48 hours at 37°C were measured in millimeters. Statistical analysis of the data was performed using one-way analysis of variance, Kolmogorov-Smirnov, Levene, and Bonferroni tests.
Results: At the end of the study the solutions tested showed a statistically significant antibacterial effect on all bacterial strains used (p<0.05). Cavity Cleanser disinfectant containing 2% chlorhexidine showed the highest antibacterial effect on S. mutans and L. acidophilus, and benzalkonium-containing Tubulicid Red disinfectant on E. faecalis.
Conclusion: The antibacterial effect of all cavity disinfectants used in the study was found to be higher at the end of the 48th hour than at the end of the 24th hour, but there was no statistically significant difference (p>0.05).
Keywords: antibacterial agents; antibacterial effect; cavity disinfectants; chlorhexidine; contamination; dental caries; disinfection; disc diffusion; gram-negative bacteria; gram-positive bacteria
Objective: To identify interstitial cells of Cajal (ICC) in the common bile duct of Kunming mice.
Study Design: Common bile ducts obtained from the Kunming mice were prepared for immunohistochemical investigations using the c-kit antibody. Immunoelectron microscopy was used to detect the expression of c-kit in the ICC of the common bile duct. Transmission electron microscopy showed ultrastructure of ICC in the murine bile duct. Reverse transcription–polymerase chain reaction (RT-PCR) and western blot were used to confirm the expression of mRNA specific for the c-kit gene and production of c-kit protein in the Kunming mice common bile duct.
Results: Immunohistochemistry revealed that ICC in the murine common bile duct are c-kit positive and the ICC are located in the tela submucosa and the tunica muscularis of the murine common bile duct and do not connect with each other. Immunoelectron microscopy confirmed the expression of Kit by ICC in the murine common bile duct. Transmission electron microscopy showed that ICC in the murine common bile duct have long processes, abundant mitochondria, plenty of smooth endoplasmic reticulum (sER), a lot of lysosomes, and dense bodies. The caveolae of ICC are distinctive. At the same time, RT-PCR indicated that the Kunming mice common bile duct expressed mRNA specific for the c-kit gene, and western blot analysis showed the evidence of production of c-kit protein in the Kunming mice common bile duct.
Conclusion: ICC are found in the Kunming mice common bile duct, which is likely to lead to the development of motility study of the common bile duct.
Keywords: common bile duct; electron microscopy; immuno-electron microscopy; interstitial cells of Cajal; intestines; smooth muscle; tyrosine kinase receptor (c-kit)
This study examined the effects of desloratadine on ovarian ischemia-reperfusion injury in rats. Rats were divided into three groups: an ischemia-reperfusion injury group, an ischemia-reperfusion injury group treated with desloratadine, and a sham group. Ovarian tissue was analyzed for markers of oxidative stress and inflammation after ischemia and reperfusion. Results showed that desloratadine significantly reduced oxidative stress markers like MDA and increased antioxidant markers like GSH compared to the ischemia-reperfusion injury group. Desloratadine also decreased levels of proinflammatory cytokines like NF-κB, IL-1β, and TNF-α. Histological analysis revealed that desl
This study investigated the effects of the angiotensin II type 1 receptor blocker losartan on cell apoptosis and blood-brain barrier integrity following craniectomy in a rat model of traumatic brain injury. Rats underwent craniectomy and were divided into three groups: a control group, a trauma group given saline, and a trauma group given losartan. Losartan treatment was found to decrease TUNEL staining, a marker of apoptosis, in neurons and glial cells compared to the saline group. Losartan also preserved the regular structure of astrocytes near blood vessels, whereas the saline group showed degenerative astrocyte processes. The results suggest losartan may reduce cellular apoptosis and help maintain blood
This study investigated the protective effects of losartan, an AT1 receptor blocker, on testicular injury caused by ischemia/reperfusion in a rat testicular torsion model. Forty rats were divided into four groups: a control group, a torsion group, a torsion/detorsion group, and a torsion/detorsion plus losartan group. Biochemical assays and histopathological analysis showed that losartan prevented oxidative damage and reduced apoptosis in germ cells compared to the torsion/detorsion group, suggesting losartan has a protective role against ischemia/reperfusion injury in rat testes.
The effects of diethylstilbestrol administration on rat kidney. ultrastructur...Prof. Hesham N. Mustafa
This study examined the effects of diethylstilbestrol (DES) administration on rat kidney tissues over different time periods using histological, immunohistochemical, and ultrastructural analysis. Thirty male rats were divided into three groups: a control group, a group that received 60 μg/kg DES daily for 20 days, and a group that received the same dose of DES for 50 days. DES administration for 50 days caused degeneration of renal tissues, damage to renal tubules, increased cellularity of glomeruli, and a significant increase in BAX protein expression, indicating increased apoptosis. These changes were less pronounced after 20 days of treatment. The study found that non-steroidal synthetic estrogens like DES can have
This study investigated the protective effects of Salacia oblanga and quercetin on cyclophosphamide-induced chromosome aberrations in rat bone marrow cells. Rats were treated with Salacia oblanga or quercetin for 15 days, then given cyclophosphamide on days 14 and 15. Cyclophosphamide is known to induce chromosome aberrations and oxidative stress. The study found that quercetin completely prevented cyclophosphamide-induced chromosome aberrations, while Salacia oblanga partially prevented them. Both treatments decreased oxidative stress caused by cyclophosphamide. The results suggest that Salacia oblanga and quercetin can protect against the genotoxic and oxidative effects of cyclophosph
This study investigated the protective effects of carvacrol on testicular damage caused by experimental testicular torsion-detorsion in rats. The study consisted of 4 groups of rats: a control group, a torsion group, a torsion-detorsion group, and a torsion-detorsion group treated with carvacrol. Histopathological analysis found increased damage in spermatogenic cells and decreased antioxidant levels in the torsion and torsion-detorsion groups compared to the control and carvacrol groups. Immunohistochemical staining showed increased endothelin-1 expression in the torsion and detorsion groups but not in the carvacrol group. The results suggest that carvacrol may prevent
Liver ischemia/reperfusion injury, a setting in which the functional mass is ...Prof. Hesham N. Mustafa
The document discusses a study on the effects of the phosphodiesterase type-5 (PDE5) inhibitor tadalafil on liver ischemia/reperfusion injury in rats. The study found that tadalafil treatment before ischemia/reperfusion injury helped restore normal liver enzyme levels, reduced oxidative stress and inflammation in liver tissue, and decreased levels of tumor necrosis factor-alpha, interleukin-6, and intercellular adhesion molecule-1. Histological analysis also showed tadalafil treatment helped protect against liver damage. The findings suggest that modulating the inflammatory response may be one mechanism by which tadalafil provides hepatoprotection against ischemia/reperfusion injury.
The IOSR Journal of Pharmacy (IOSRPHR) is an open access online & offline peer reviewed international journal, which publishes innovative research papers, reviews, mini-reviews, short communications and notes dealing with Pharmaceutical Sciences( Pharmaceutical Technology, Pharmaceutics, Biopharmaceutics, Pharmacokinetics, Pharmaceutical/Medicinal Chemistry, Computational Chemistry and Molecular Drug Design, Pharmacognosy & Phytochemistry, Pharmacology, Pharmaceutical Analysis, Pharmacy Practice, Clinical and Hospital Pharmacy, Cell Biology, Genomics and Proteomics, Pharmacogenomics, Bioinformatics and Biotechnology of Pharmaceutical Interest........more details on Aim & Scope).
All manuscripts are subject to rapid peer review. Those of high quality (not previously published and not under consideration for publication in another journal) will be published without delay.
Preclinical evaluation of drugs for osteoarthritispeter donik
Osteoarthritis is a common type of arthritis that causes the breakdown of cartilage in joints. It is characterized by loss of cartilage, thickening of bones, and formation of bone spurs. Risk factors include age, obesity, injury, and genetics. While NSAIDs are commonly used to treat symptoms, there are no approved disease-modifying drugs for osteoarthritis. Various animal models are used in research to study the disease process and potential treatments, but they all have limitations in mimicking human osteoarthritis. Further research is still needed to develop effective disease-modifying therapies.
Histopathological effects of nanosilver (Ag-NPs) in liver after dermal exposu...Nanomedicine Journal (NMJ)
Objective(s):
With the advent of nanotechnology, significant progress has been made in the area of nanoscale materials such as nanosilver (Ag-Nps). These nanoparticles have a wide range of applications and been used for antimicrobial purposes for more than a century. However, little
attention has been paid to the toxicity of nanosilver wound dressing. This study was designed to investigate the possible histopathological toxicity of Ag-NPs in liver of mice during wound healing.
Materials and Methods:
A group of 50 female BALB/c mice of about 8 weeks were randomly divided into two groups: Ag-NPs and control groups (n=25). After creating similar wound on the backs of all animals, the wound bed was treated in Ag-NPs group, with a volume of 50 microliters of the nanosilver solution (10ppm) ,and in control group, with the same amount of distilled water. The experiment lasted for 14 days. Histopathaological samplings of liver were conducted on days 2, 7 and 14 of the experiment.
Results:
Histopathological studies demonstrated time-dependent changes in mice liver treated with Ag-NPs compared to control group. Some changes include dilation in central venous, hyperemia, cell swelling, increase of Kupffer and inflammatory cells.
Conclusion:
This study suggests that use of nanosilver for wound healing may cause a mild toxicity, as indicated by time-dependent toxic responses in liver tissue. However, this issue will have to be considered more extensively in further studies
This document provides information about a PhD scholar named Haseeb Ahsan who is exploring the therapeutic potential of Naproxen derivatives in treating rheumatoid arthritis under the supervision of Dr. Alamgeer. It introduces rheumatoid arthritis and issues with current treatments. The scholar hypothesizes that newly synthesized Naproxen derivatives will have anti-arthritic effects and safety. The document outlines plans to evaluate the anti-inflammatory effects of compounds in vitro and in animal models of arthritis, and to assess toxicity.
The document summarizes a study on the effects of cypermethrin pesticide on rabbit biochemistry and liver/kidney histology. Rabbits received low, medium, or high doses of cypermethrin intraperitoneally over 71 days. Blood samples were analyzed for liver and kidney enzymes/proteins. Liver and kidney tissues were examined histologically. Results showed cypermethrin increased liver enzymes and urea/creatinine levels in blood in a dose-dependent manner, indicating liver and kidney damage. Histological examination found corresponding dose-dependent lesions in the liver (degeneration, bile duct hyperplasia) and kidneys (necrosis, cast deposition, increased urinary space), confirming cyper
In vivo studies of wound healing and hepatoprotective agentsAdarsh Patil
1) Various in vivo models are used to evaluate wound healing and hepatoprotective activity, including excision wounds, incision wounds, and burn wounds in rats.
2) Parameters like wound contraction, epithelization time, tensile strength and histopathology are measured to assess wound healing.
3) Hepatoprotective activity is evaluated by pre-treating animals with the test substance before inducing liver damage using toxins like CCl4, D-galactosamine, or paracetamol. Liver function is then assessed through serum enzymes and histopathology.
A study on the toxic effect of different doses of Diclofenac sodium on the de...Prof. Hesham N. Mustafa
The toxic effects of different doses of diclofenac sodium (DS) on the kidney on the postnatal period (0-7 days) by morphometrical and immunohistochemical methods were investigated. For this purpose, 15 female adult wistar albino rats were used and divided into 5 main groups. Group Ia served as normal control, physiologic group Ib received normal saline, group II received low dose (3.9 mg/kg), group III received medium dose (9 mg/kg) and group IV received high dose (18 mg/kg). Male offspring’s from 0-7 days after birth were used in this study. On the 8th day of postnatal life, all animals were anesthetized. Then, the kidney samples were analyzed. Haematoxylin and eosin staining showed degeneration and necrosis, apparent atrophy of the glomeruli, mononuclear cell infiltration, congested vessels, increased fibrous tissue and distortion of the proximal convoluted tubules with interruption of the brush margin of the DS treated group. Increased level of Caspase-3 and upregulation of TNF-α with different doses of DS. In light of our findings, DS may lead to adverse effects that are dose-dependent in the prenatal subjected kidney to this drug.
Keywords : Diclofenac sodium; Proximal convoluted tubules; Apoptosis; Cyclooxygenase.
This thesis investigated the effect of cadmium sulfate exposure and treatment with the mushroom Pleurotus florida on albino rats. Rats were divided into groups that received various doses of cadmium and mushroom extract. Organs and blood were analyzed after 4, 8, 12, and 16 days. Histological analysis found damage to heart, liver, and kidneys in cadmium-exposed rats, which was reduced by mushroom treatment. Behavioral changes and clinical signs of toxicity were also observed with cadmium exposure. The mushroom extract showed protective effects on the organs. In conclusion, Pleurotus florida has potential for reducing cadmium-induced organ damage.
Abstract
Objective(s):
Zinc oxide nanoparticles (ZNP) are increasingly used in sunscreens, biosensors, food additives and pigments. In this study the effects of ZNP on liver of rats was investigated.
Materials and Methods:
Experimental groups received 5, 50 and 300 mg/kg ZNP respectively for 14 days. Control group received only distilled water. ALT, AST and ALP were considered as biomarkers to indicate hepatotoxicity. Lipid peroxidation (MDA), SOD and GPx were detected for assessment of oxidative stress in liver tissue. Histological studies and TUNEL assay were also done.
Results:
Plasma concentration of zinc (Zn) was significantly increased in 5 mg/kg ZNP-treated rats. Liver concentration of Zn was significantly increased in the 300 mg/kg ZNP-treated animals. Weight of liver was markedly increased in both 5 and 300 mg/kg doses of ZNP. ZNP at the doses of 5 mg/kg induced a significant increase in oxidative stress through the increase in MDA content and a significant decrease in SOD and GPx enzymes activity in the liver tissue. Administration of ZNP at 5 mg/kg induced a significant elevation in plasma AST, ALT and ALP. Histological studies showed that treatment with 5 mg/kg of ZNP caused hepatocytes swelling, which was accompanied by congestion of RBC and accumulation of inflammatory cells. Apoptotic index was also significantly increased in this group. ZNP at the dose of 300 mg/kg had poor hepatotoxicity effect.
Conclusion:
It is concluded that lower doses of ZNP has more hepatotoxic effects on rats, and recommended to use it with caution if there is a hepatological problem.
Hyperoxaluria Induces Oxidative DNA Damage and Results in Renal Tubular Epithelial Cell Apoptosis: A Clue to the Pathogenesis of Urolithiasis by Hasan Aydin in Experimental Techniques in Urology & Nephrology
Morphohistometric analysis of the effects of Coriandrum sativum on cortical a...Prof. Hesham N. Mustafa
The document summarizes a study that analyzed the effects of Coriandrum sativum (C. sativum) on lead-induced neurotoxicity in the cerebellar cortex and somatosensory cortex of rats. The study found that lead exposure increased oxidative stress in the brain and caused structural changes in the cerebellar and cortical layers. However, supplementation with C. sativum extract reduced lead levels in the blood and brain, decreased oxidative stress, and corrected the changes to layer thickness and nuclei density caused by lead exposure. The results suggest that C. sativum has protective effects against lead neurotoxicity due to its antioxidant and metal-chelating properties.
This study investigated the antioxidant effects of nebivolol in protecting against testicular damage caused by torsion-detorsion injury in rats. Forty rats were divided into four groups: a control group, a torsion group, a torsion/detorsion group, and a torsion/detorsion+nebivolol group. Biochemical assays and histopathological examination found that torsion-detorsion injury increased oxidative stress markers and apoptosis in testicular tissue, while administration of nebivolol before detorsion decreased oxidative stress and apoptosis. The study suggests that nebivolol has a protective effect against ischemia-reperfusion injury in the testes caused by torsion-
Background: Body of literature are becoming pronounced that pathological condition in one organ of the body might have an effect on other distal organs owing to the fact, that the entire body metabolism is orchestrated centrally.
Pathological events occurring in an organ are likely to be extended to other organs. Pretreatment that minimize these events are presumed to be beneficial to the extended organs.
Methods: Following 30 min of ischemia and 48 h of reperfusion in the kidney, rats under anesthesia were sacrificed and blood sample collected through cardiac puncture. Serum level of troponin I, and activities of total creatine kinase (CK), mass creatine kinase (CK-MB), alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP) and gamma –glutamyl transferase (GGT) were estimated spectrophotometrically.
Results: Serum troponin I increased to 0.031 ± 0.001 ng/ml in the ischemic group, and following pretreatment with Lmm (600mg/kg), serum level of troponin I decreased significantly to 0.021 ± 0.001 ng/ml (P<.05).><.05),><.05)><.05).
Objective: To identify interstitial cells of Cajal (ICC) in the common bile duct of Kunming mice.
Study Design: Common bile ducts obtained from the Kunming mice were prepared for immunohistochemical investigations using the c-kit antibody. Immunoelectron microscopy was used to detect the expression of c-kit in the ICC of the common bile duct. Transmission electron microscopy showed ultrastructure of ICC in the murine bile duct. Reverse transcription–polymerase chain reaction (RT-PCR) and western blot were used to confirm the expression of mRNA specific for the c-kit gene and production of c-kit protein in the Kunming mice common bile duct.
Results: Immunohistochemistry revealed that ICC in the murine common bile duct are c-kit positive and the ICC are located in the tela submucosa and the tunica muscularis of the murine common bile duct and do not connect with each other. Immunoelectron microscopy confirmed the expression of Kit by ICC in the murine common bile duct. Transmission electron microscopy showed that ICC in the murine common bile duct have long processes, abundant mitochondria, plenty of smooth endoplasmic reticulum (sER), a lot of lysosomes, and dense bodies. The caveolae of ICC are distinctive. At the same time, RT-PCR indicated that the Kunming mice common bile duct expressed mRNA specific for the c-kit gene, and western blot analysis showed the evidence of production of c-kit protein in the Kunming mice common bile duct.
Conclusion: ICC are found in the Kunming mice common bile duct, which is likely to lead to the development of motility study of the common bile duct.
Keywords: common bile duct; electron microscopy; immuno-electron microscopy; interstitial cells of Cajal; intestines; smooth muscle; tyrosine kinase receptor (c-kit)
This study examined the effects of desloratadine on ovarian ischemia-reperfusion injury in rats. Rats were divided into three groups: an ischemia-reperfusion injury group, an ischemia-reperfusion injury group treated with desloratadine, and a sham group. Ovarian tissue was analyzed for markers of oxidative stress and inflammation after ischemia and reperfusion. Results showed that desloratadine significantly reduced oxidative stress markers like MDA and increased antioxidant markers like GSH compared to the ischemia-reperfusion injury group. Desloratadine also decreased levels of proinflammatory cytokines like NF-κB, IL-1β, and TNF-α. Histological analysis revealed that desl
This study investigated the effects of the angiotensin II type 1 receptor blocker losartan on cell apoptosis and blood-brain barrier integrity following craniectomy in a rat model of traumatic brain injury. Rats underwent craniectomy and were divided into three groups: a control group, a trauma group given saline, and a trauma group given losartan. Losartan treatment was found to decrease TUNEL staining, a marker of apoptosis, in neurons and glial cells compared to the saline group. Losartan also preserved the regular structure of astrocytes near blood vessels, whereas the saline group showed degenerative astrocyte processes. The results suggest losartan may reduce cellular apoptosis and help maintain blood
This study investigated the protective effects of losartan, an AT1 receptor blocker, on testicular injury caused by ischemia/reperfusion in a rat testicular torsion model. Forty rats were divided into four groups: a control group, a torsion group, a torsion/detorsion group, and a torsion/detorsion plus losartan group. Biochemical assays and histopathological analysis showed that losartan prevented oxidative damage and reduced apoptosis in germ cells compared to the torsion/detorsion group, suggesting losartan has a protective role against ischemia/reperfusion injury in rat testes.
The effects of diethylstilbestrol administration on rat kidney. ultrastructur...Prof. Hesham N. Mustafa
This study examined the effects of diethylstilbestrol (DES) administration on rat kidney tissues over different time periods using histological, immunohistochemical, and ultrastructural analysis. Thirty male rats were divided into three groups: a control group, a group that received 60 μg/kg DES daily for 20 days, and a group that received the same dose of DES for 50 days. DES administration for 50 days caused degeneration of renal tissues, damage to renal tubules, increased cellularity of glomeruli, and a significant increase in BAX protein expression, indicating increased apoptosis. These changes were less pronounced after 20 days of treatment. The study found that non-steroidal synthetic estrogens like DES can have
This study investigated the protective effects of Salacia oblanga and quercetin on cyclophosphamide-induced chromosome aberrations in rat bone marrow cells. Rats were treated with Salacia oblanga or quercetin for 15 days, then given cyclophosphamide on days 14 and 15. Cyclophosphamide is known to induce chromosome aberrations and oxidative stress. The study found that quercetin completely prevented cyclophosphamide-induced chromosome aberrations, while Salacia oblanga partially prevented them. Both treatments decreased oxidative stress caused by cyclophosphamide. The results suggest that Salacia oblanga and quercetin can protect against the genotoxic and oxidative effects of cyclophosph
This study investigated the protective effects of carvacrol on testicular damage caused by experimental testicular torsion-detorsion in rats. The study consisted of 4 groups of rats: a control group, a torsion group, a torsion-detorsion group, and a torsion-detorsion group treated with carvacrol. Histopathological analysis found increased damage in spermatogenic cells and decreased antioxidant levels in the torsion and torsion-detorsion groups compared to the control and carvacrol groups. Immunohistochemical staining showed increased endothelin-1 expression in the torsion and detorsion groups but not in the carvacrol group. The results suggest that carvacrol may prevent
Liver ischemia/reperfusion injury, a setting in which the functional mass is ...Prof. Hesham N. Mustafa
The document discusses a study on the effects of the phosphodiesterase type-5 (PDE5) inhibitor tadalafil on liver ischemia/reperfusion injury in rats. The study found that tadalafil treatment before ischemia/reperfusion injury helped restore normal liver enzyme levels, reduced oxidative stress and inflammation in liver tissue, and decreased levels of tumor necrosis factor-alpha, interleukin-6, and intercellular adhesion molecule-1. Histological analysis also showed tadalafil treatment helped protect against liver damage. The findings suggest that modulating the inflammatory response may be one mechanism by which tadalafil provides hepatoprotection against ischemia/reperfusion injury.
The IOSR Journal of Pharmacy (IOSRPHR) is an open access online & offline peer reviewed international journal, which publishes innovative research papers, reviews, mini-reviews, short communications and notes dealing with Pharmaceutical Sciences( Pharmaceutical Technology, Pharmaceutics, Biopharmaceutics, Pharmacokinetics, Pharmaceutical/Medicinal Chemistry, Computational Chemistry and Molecular Drug Design, Pharmacognosy & Phytochemistry, Pharmacology, Pharmaceutical Analysis, Pharmacy Practice, Clinical and Hospital Pharmacy, Cell Biology, Genomics and Proteomics, Pharmacogenomics, Bioinformatics and Biotechnology of Pharmaceutical Interest........more details on Aim & Scope).
All manuscripts are subject to rapid peer review. Those of high quality (not previously published and not under consideration for publication in another journal) will be published without delay.
Preclinical evaluation of drugs for osteoarthritispeter donik
Osteoarthritis is a common type of arthritis that causes the breakdown of cartilage in joints. It is characterized by loss of cartilage, thickening of bones, and formation of bone spurs. Risk factors include age, obesity, injury, and genetics. While NSAIDs are commonly used to treat symptoms, there are no approved disease-modifying drugs for osteoarthritis. Various animal models are used in research to study the disease process and potential treatments, but they all have limitations in mimicking human osteoarthritis. Further research is still needed to develop effective disease-modifying therapies.
Histopathological effects of nanosilver (Ag-NPs) in liver after dermal exposu...Nanomedicine Journal (NMJ)
Objective(s):
With the advent of nanotechnology, significant progress has been made in the area of nanoscale materials such as nanosilver (Ag-Nps). These nanoparticles have a wide range of applications and been used for antimicrobial purposes for more than a century. However, little
attention has been paid to the toxicity of nanosilver wound dressing. This study was designed to investigate the possible histopathological toxicity of Ag-NPs in liver of mice during wound healing.
Materials and Methods:
A group of 50 female BALB/c mice of about 8 weeks were randomly divided into two groups: Ag-NPs and control groups (n=25). After creating similar wound on the backs of all animals, the wound bed was treated in Ag-NPs group, with a volume of 50 microliters of the nanosilver solution (10ppm) ,and in control group, with the same amount of distilled water. The experiment lasted for 14 days. Histopathaological samplings of liver were conducted on days 2, 7 and 14 of the experiment.
Results:
Histopathological studies demonstrated time-dependent changes in mice liver treated with Ag-NPs compared to control group. Some changes include dilation in central venous, hyperemia, cell swelling, increase of Kupffer and inflammatory cells.
Conclusion:
This study suggests that use of nanosilver for wound healing may cause a mild toxicity, as indicated by time-dependent toxic responses in liver tissue. However, this issue will have to be considered more extensively in further studies
This document provides information about a PhD scholar named Haseeb Ahsan who is exploring the therapeutic potential of Naproxen derivatives in treating rheumatoid arthritis under the supervision of Dr. Alamgeer. It introduces rheumatoid arthritis and issues with current treatments. The scholar hypothesizes that newly synthesized Naproxen derivatives will have anti-arthritic effects and safety. The document outlines plans to evaluate the anti-inflammatory effects of compounds in vitro and in animal models of arthritis, and to assess toxicity.
The document summarizes a study on the effects of cypermethrin pesticide on rabbit biochemistry and liver/kidney histology. Rabbits received low, medium, or high doses of cypermethrin intraperitoneally over 71 days. Blood samples were analyzed for liver and kidney enzymes/proteins. Liver and kidney tissues were examined histologically. Results showed cypermethrin increased liver enzymes and urea/creatinine levels in blood in a dose-dependent manner, indicating liver and kidney damage. Histological examination found corresponding dose-dependent lesions in the liver (degeneration, bile duct hyperplasia) and kidneys (necrosis, cast deposition, increased urinary space), confirming cyper
In vivo studies of wound healing and hepatoprotective agentsAdarsh Patil
1) Various in vivo models are used to evaluate wound healing and hepatoprotective activity, including excision wounds, incision wounds, and burn wounds in rats.
2) Parameters like wound contraction, epithelization time, tensile strength and histopathology are measured to assess wound healing.
3) Hepatoprotective activity is evaluated by pre-treating animals with the test substance before inducing liver damage using toxins like CCl4, D-galactosamine, or paracetamol. Liver function is then assessed through serum enzymes and histopathology.
A study on the toxic effect of different doses of Diclofenac sodium on the de...Prof. Hesham N. Mustafa
The toxic effects of different doses of diclofenac sodium (DS) on the kidney on the postnatal period (0-7 days) by morphometrical and immunohistochemical methods were investigated. For this purpose, 15 female adult wistar albino rats were used and divided into 5 main groups. Group Ia served as normal control, physiologic group Ib received normal saline, group II received low dose (3.9 mg/kg), group III received medium dose (9 mg/kg) and group IV received high dose (18 mg/kg). Male offspring’s from 0-7 days after birth were used in this study. On the 8th day of postnatal life, all animals were anesthetized. Then, the kidney samples were analyzed. Haematoxylin and eosin staining showed degeneration and necrosis, apparent atrophy of the glomeruli, mononuclear cell infiltration, congested vessels, increased fibrous tissue and distortion of the proximal convoluted tubules with interruption of the brush margin of the DS treated group. Increased level of Caspase-3 and upregulation of TNF-α with different doses of DS. In light of our findings, DS may lead to adverse effects that are dose-dependent in the prenatal subjected kidney to this drug.
Keywords : Diclofenac sodium; Proximal convoluted tubules; Apoptosis; Cyclooxygenase.
This thesis investigated the effect of cadmium sulfate exposure and treatment with the mushroom Pleurotus florida on albino rats. Rats were divided into groups that received various doses of cadmium and mushroom extract. Organs and blood were analyzed after 4, 8, 12, and 16 days. Histological analysis found damage to heart, liver, and kidneys in cadmium-exposed rats, which was reduced by mushroom treatment. Behavioral changes and clinical signs of toxicity were also observed with cadmium exposure. The mushroom extract showed protective effects on the organs. In conclusion, Pleurotus florida has potential for reducing cadmium-induced organ damage.
Abstract
Objective(s):
Zinc oxide nanoparticles (ZNP) are increasingly used in sunscreens, biosensors, food additives and pigments. In this study the effects of ZNP on liver of rats was investigated.
Materials and Methods:
Experimental groups received 5, 50 and 300 mg/kg ZNP respectively for 14 days. Control group received only distilled water. ALT, AST and ALP were considered as biomarkers to indicate hepatotoxicity. Lipid peroxidation (MDA), SOD and GPx were detected for assessment of oxidative stress in liver tissue. Histological studies and TUNEL assay were also done.
Results:
Plasma concentration of zinc (Zn) was significantly increased in 5 mg/kg ZNP-treated rats. Liver concentration of Zn was significantly increased in the 300 mg/kg ZNP-treated animals. Weight of liver was markedly increased in both 5 and 300 mg/kg doses of ZNP. ZNP at the doses of 5 mg/kg induced a significant increase in oxidative stress through the increase in MDA content and a significant decrease in SOD and GPx enzymes activity in the liver tissue. Administration of ZNP at 5 mg/kg induced a significant elevation in plasma AST, ALT and ALP. Histological studies showed that treatment with 5 mg/kg of ZNP caused hepatocytes swelling, which was accompanied by congestion of RBC and accumulation of inflammatory cells. Apoptotic index was also significantly increased in this group. ZNP at the dose of 300 mg/kg had poor hepatotoxicity effect.
Conclusion:
It is concluded that lower doses of ZNP has more hepatotoxic effects on rats, and recommended to use it with caution if there is a hepatological problem.
Hyperoxaluria Induces Oxidative DNA Damage and Results in Renal Tubular Epithelial Cell Apoptosis: A Clue to the Pathogenesis of Urolithiasis by Hasan Aydin in Experimental Techniques in Urology & Nephrology
Morphohistometric analysis of the effects of Coriandrum sativum on cortical a...Prof. Hesham N. Mustafa
The document summarizes a study that analyzed the effects of Coriandrum sativum (C. sativum) on lead-induced neurotoxicity in the cerebellar cortex and somatosensory cortex of rats. The study found that lead exposure increased oxidative stress in the brain and caused structural changes in the cerebellar and cortical layers. However, supplementation with C. sativum extract reduced lead levels in the blood and brain, decreased oxidative stress, and corrected the changes to layer thickness and nuclei density caused by lead exposure. The results suggest that C. sativum has protective effects against lead neurotoxicity due to its antioxidant and metal-chelating properties.
This study investigated the antioxidant effects of nebivolol in protecting against testicular damage caused by torsion-detorsion injury in rats. Forty rats were divided into four groups: a control group, a torsion group, a torsion/detorsion group, and a torsion/detorsion+nebivolol group. Biochemical assays and histopathological examination found that torsion-detorsion injury increased oxidative stress markers and apoptosis in testicular tissue, while administration of nebivolol before detorsion decreased oxidative stress and apoptosis. The study suggests that nebivolol has a protective effect against ischemia-reperfusion injury in the testes caused by torsion-
Background: Body of literature are becoming pronounced that pathological condition in one organ of the body might have an effect on other distal organs owing to the fact, that the entire body metabolism is orchestrated centrally.
Pathological events occurring in an organ are likely to be extended to other organs. Pretreatment that minimize these events are presumed to be beneficial to the extended organs.
Methods: Following 30 min of ischemia and 48 h of reperfusion in the kidney, rats under anesthesia were sacrificed and blood sample collected through cardiac puncture. Serum level of troponin I, and activities of total creatine kinase (CK), mass creatine kinase (CK-MB), alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP) and gamma –glutamyl transferase (GGT) were estimated spectrophotometrically.
Results: Serum troponin I increased to 0.031 ± 0.001 ng/ml in the ischemic group, and following pretreatment with Lmm (600mg/kg), serum level of troponin I decreased significantly to 0.021 ± 0.001 ng/ml (P<.05).><.05),><.05)><.05).
This study investigated the histopathological changes and expressions of ADAMTS-5 and TNF-α in the gingival tissue of streptozotocin-induced diabetic rats compared to controls. Rats were divided into control and diabetic groups, with the latter receiving a single dose of streptozotocin to induce diabetes. Gingival tissues were examined using hematoxylin-eosin staining and immunohistochemical staining for ADAMTS-5 and TNF-α. Results showed thinning of the epithelial layer, degeneration of epithelial cells, and inflammatory cell infiltration in diabetic rats compared to controls. Diabetic rats also showed positive expression of ADAMTS-5 in epithelial cells and TNF-α in basal lamina
This document provides information about Alzheimer's disease including its definition, history, pathophysiology, mechanisms, signs and symptoms, treatments, and screening methods. It discusses how Alzheimer's was first identified by Dr. Alois Alzheimer in 1906 and the characteristic brain abnormalities he observed. The two main hypotheses for the disease mechanism are the amyloid beta hypothesis and tau hypothesis which involve the accumulation of amyloid plaques and neurofibrillary tangles respectively. Several in vitro and in vivo screening methods are described to test potential drugs for treating Alzheimer's including assays measuring acetylcholinesterase inhibition and animal behavior tests.
This study investigated the effects of simvastatin treatment on a rat model of ovarian torsion and detorsion. Rats were divided into four groups: control, ischemia, ischemia-reperfusion, and ischemia-reperfusion treated with simvastatin. Ovarian tissue samples were analyzed for markers of oxidative damage (MDA and GSH-Px) and apoptosis (caspase-3 and sFlt-1 expression). Results showed that simvastatin decreased MDA levels and increased GSH levels, suggesting it reduced oxidative damage. Simvastatin also decreased caspase-3 and sFlt-1 expression, indicating it prevented cell apoptosis and regulated angiogenesis. The study concludes that simvastatin administration protects against cell
This document provides an overview of interventional approaches for treating low back pain caused by intervertebral disc degeneration. It describes the anatomy and physiology of the intervertebral disc and the causes and stages of disc degeneration. Gene therapy approaches including delivery of anticatabolic genes like TIMP-1 are discussed as a way to inhibit the enzymes that degrade the disc matrix. Growth factors like BMPs, PRP, and EGF are also reviewed for their ability to stimulate matrix production. Cell-based therapies using nucleus pulposis cells or stem cells aim to regenerate the disc extracellular matrix.
This study investigated how insulin deficiency affects mitochondrial oxidative phosphorylation in the hearts of diabetic mice. The key findings were:
1) Activity of oxidative phosphorylation complex V (ATP synthase) was significantly reduced in the hearts of streptozotocin-induced diabetic mice.
2) Normalizing blood glucose with phlorizin treatment did not improve complex V activity, but insulin treatment did normalize it, indicating the reduction was caused by insulin deficiency rather than hyperglycemia.
3) Acute insulin stimulation induced phosphorylation and translocation of Akt to mitochondria in heart muscle. This translocation was enhanced in diabetic mice and blocked inhibition of Akt, blunting the activation of complex V by insulin.
Effects of atorvastatin and streptozocin on immunohistochemical markers in hi...Ram Sahu
This study investigated the effects of atorvastatin on immunohistochemical markers in the hippocampus of rats with a streptozocin-induced model of Alzheimer's disease. The results showed that streptozocin increased glial fibrillary acidic protein and neuronal nitric oxide synthase in the hippocampus compared to controls. Atorvastatin treatment at 20 mg/kg reduced glial fibrillary acidic protein levels compared to streptozocin alone. Atorvastatin at doses of 5, 10, and 20 mg/kg increased glutathione reductase expression compared to streptozocin alone. Atorvastatin at 10 and 20 mg/kg also reduced neuronal nitric oxide synthase levels compared to streptozocin alone.
This study investigated the role of autophagy on human retinal pigment epithelial (RPE) cell viability and apoptosis under oxidative stress. RPE cells were divided into control, H2O2, and H2O2+3-MA groups. H2O2 treatment activated autophagy and increased apoptosis while decreasing cell viability. Inhibition of autophagy with 3-MA decreased apoptosis. The results suggest that autophagy is involved in H2O2-induced apoptosis of RPE cells under oxidative stress conditions.
This study investigated the protective effects of allopurinol on experimentally induced ovarian ischemia-reperfusion injury in rats. Rats were divided into four groups: a sham group, an ischemia group, an ischemia-reperfusion group, and an ischemia-reperfusion + allopurinol treated group. The study found that allopurinol decreased MDA levels and increased GSH levels compared to the ischemia and ischemia-reperfusion groups, indicating it reduced oxidative load. Allopurinol also decreased caspase-3 and sFlt-1 expression, suggesting it inhibited apoptosis and protected the ovaries from damage caused by ischemia-reperfusion.
This study examined the potential protective effects of mesenchymal stem cell (MSC) therapy against cisplatin-induced nephrotoxicity in rats. Rats were treated with cisplatin to induce kidney damage and divided into groups that received either MSCs or no additional treatment. Kidney tissue was analyzed histologically and biochemically after 4 weeks. Cisplatin caused significant kidney damage including atrophied glomeruli, thickened membranes, and tubule damage. It also increased serum markers of kidney injury and electrolyte levels. Rats treated with MSCs after cisplatin showed substantially reduced kidney damage on histology and ultrastructure. Biochemical markers and electrolyte levels were also largely restored to normal
This study examined histological modifications of the placenta in pregnancies complicated by pregnancy-induced hypertension (PIH). Placental samples from 34 women with PIH were compared to samples from 34 normotensive women. Several structural changes were more common in the PIH group, including endothelial changes in 76.47% of cases, fibrinoid necrosis in 73.52%, and hypertrophy of the smooth muscle in the artery wall in 67.64%. These findings provide insights into how PIH affects the fetal-maternal interface at the placental level.
This study examined the effects of prolonged simvastatin (SIM) treatment on ischemia-reperfusion (I/R) induced acute kidney injury in rats. Rats were divided into four groups: sham, ischemia, I/R, and I/R+SIM treated. The I/R group showed intense inflammation, necrosis, and apoptosis in kidney tissue. The I/R+SIM group showed reduced inflammation and tissue damage. Biochemical analysis found increased oxidative stress and inflammation markers in the ischemia and I/R groups compared to control, but levels in the I/R+SIM group were similar to control. Histological analysis also showed more damage in ischemia and I/R groups versus control, while the I/R+
Study of anticonvulsant activity of quinidine in albino rats using pentylenet...iosrjce
IOSR Journal of Dental and Medical Sciences is one of the speciality Journal in Dental Science and Medical Science published by International Organization of Scientific Research (IOSR). The Journal publishes papers of the highest scientific merit and widest possible scope work in all areas related to medical and dental science. The Journal welcome review articles, leading medical and clinical research articles, technical notes, case reports and others.
1) A study investigated the vasodilatory and toxic effects of a crude extract of Ruta graveolens (Ruta) on rat aortas and CRL1730 endothelial cells.
2) The Ruta extract generated vasodilation in rat aortas at subtoxic concentrations, partially dependent on the endothelium. It caused a loss of cell viability in CRL1730 cells at high concentrations but did not induce oxidative stress or DNA fragmentation.
3) The results suggest Ruta extract regulates vascular tone through a complex, partially endothelium-dependent mechanism and has vasodilatory activity at subtoxic levels without damaging cell membranes or viability.
This document presents several methods for screening drugs for the treatment of arthritis. It discusses in vitro methods like measuring the effect of drugs on cartilage cell proteoglycan metabolism and chondrolysis. It also outlines some in vivo models used in animal studies, including a canine ACL transection model, a chymopapain-induced rabbit cartilage degradation model, and a spontaneous osteoarthritis model using STR/1N mice. Evaluation methods are described for each screening technique. The document provides details on procedures, groups, timelines and metrics for assessing drug effects in these arthritis drug screening models.
This document summarizes a study that investigated how mechanical forces applied to integrin receptors control intracellular signaling in osteoblasts. The researchers found that cyclic forces applied to the beta-1 integrin subunit at 1 Hz were more effective at stimulating calcium responses in osteoblasts than continuous forces. Cyclic forces also induced increased tyrosine phosphorylation of cytoskeleton-anchored proteins and greater activation of focal adhesion kinase and mitogen-activated protein kinase compared to continuous forces. These responses depended on an intact cytoskeleton and the presence of intracellular calcium. Analysis of spatial calcium signals revealed they originated near the stressed receptors, indicating cells can sense local stress via integrins.
Curación acelerada de tendón de aquiles en ratas en resp uesta a acs 2009 a...Dr. Manuel Concepción
This study examined the effects of autologous conditioned serum (ACS) on healing of transected and sutured rat Achilles tendons.
In preliminary in vitro experiments, rat tendons exposed to ACS showed greatly enhanced expression of type I collagen genes.
In vivo, the Achilles tendons of rats were transected and sutured. The experimental group received injections of ACS near the injury site, while the control group did not. At various time points, the tendons were analyzed biomechanically and histologically. The ACS-treated tendons were thicker, had more type I collagen, and showed accelerated recovery of tendon stiffness and maturity of repair tissue. However, maximum load to
This study aimed to evaluate the protective effects of zofenopril on intestinal ischemia-reperfusion injury using a rat model. Rats were divided into five groups: sham surgery, ischemia only, ischemia-reperfusion, ischemia-reperfusion with zofenopril pretreatment, and zofenopril only. Biochemical markers of oxidative stress and apoptosis were measured in intestinal tissue samples. Histopathological examination and immunohistochemical staining for caspase-3 was also performed. Results showed that ischemia-reperfusion caused intestinal damage including mucosal destruction and cell apoptosis. Zofenopril pretreatment reduced oxidative stress markers and inhibited apoptosis, protecting against ischemia-reperfusion injury on histological and biochemical evaluation. The
Similar to Changes in the Bladder After Spinal Cord Injury and Expression of VEGF and APAF-1 (20)
BACKGROUND: Sequential Epstein-Barr virus (EBV)–positive B cell lymphoma to the initial diagnosis of angioimmunoblastic T cell lymphoma (AITL) is very rare, the exact mechanism and standard therapy of which is still being explored. CASE: A 50-year-old man was admitted to our hospital in January 2014 with a three-week history of enlargement of multiple lymph nodes. His initial pathological evaluation indicated AILT. The reactivation of EBV was observed during the immunosuppression therapy for AITL, accompanied by onset of subcutaneous nodules proven to be EBV-positive diffuse large B cell lymphoma (DLBCL) based on the pathological findings of rebiopsy. The patient was successfully treated with chidamide, a histone deacetylase (HDAC) inhibitor, and rituximab.
Conclusion: The sufficient surveillance for serum EBV and repeat biopsy is necessary for patients with AITL, and this treatment modality may become an active option.
Keywords: angioimmunoblastic T cell lymphoma, Epstein-Barr virus, HDAC inhibitor, non-Hodgkin lymphoma, peripheral T cell lymphoma
Objective: The association between telomerase reverse transcriptase (TERT) promoter mutation and outcome of melanoma is unclear and controversial. We aim to conduct a meta-analysis and investigate whether the TERT promoter mutation is a prognostic factor of melanoma.
Study Design: Appropriate studies were searched in 3 databases: PubMed, Web of Science, and Embase. Pooled hazard ratios (HRs) were counted through random effects model.
Results: Heterogeneity was moderate in overall survival (OS) (I2=43.7%, p=0.059) and low in disease-free survival (DFS) (I2=0.0%, p=0.587). Sensitivity analysis indicated that the removal of any of the study did not affect the final results. Evidence for publication bias was not found (Begg’s test, p=0.281; Egger’s test, p=0.078). The pooled OS HRs from combined effects analysis was determined (HR 1.07; 95% CI 0.83–1.39, p=0.585), together with the pooled HRs of DFS (HR 1.65; 95% CI 1.02–2.66, p=0.042). TERT promoter mutation predicted a good outcome in meta-static melanoma patients (HR 0.66; 95% CI 0.46–0.96, p=0.042). The pooled HRs of combined mutation in TERT promoter and BRAF (HR 6.27; 95% CI 2.7–14.58, p=0.000) predicted a bad outcome in melanoma patients.
Conclusion: TERT promoter mutation significantly predicted poor DFS outcome but, on the contrary, predicted a good outcome in metastatic melanoma patients. The combined TERT promoter and BRAF mutation was a significant independent factor of OS in melanoma patients.
Keywords: melanoma; meta-analysis; mutation; prognosis; promoter regions, genetic; skin neoplasms; telomerase; TERT promoter mutation; TERT protein, human
Objective: In order to reduce complications accompanied with dental implant restoration, this study strives to prepare a novel sealant and lubricant that can be used in dental implant systems as well as to evaluate its characteristics.
Study Design: Chitosan (CS), β-glycerophosphate pentahydrate (β-GP), and nano silver (nAg) were used to prepare thermosensitive hydrogel. According to the different volume ratios of CS to β-GP, 3 experimental groups were established, namely 16/4, 13/7, and 10/10 groups. Their morphology, composition, and chemical properties were analyzed via SEM, EDS, and FTIR. In addition, the effect of the hydrogel on the stability of dental implant-abutment connection was investigated by removal torque test combined with dynamic cyclic loading experiment. The maximum fracture load was measured under different lubricating conditions by electronic universal testing machine. The cytotoxicity and in vitro antibacterial effect of the hydrogel were examined respectively by CCK-8 test and the spread plate method.
Results: The CS/β-GP/nAg thermosensitive hydro-gel was successfully prepared in this study, which was found to be a porous structure through SEM. The removal torque test and the dynamic cyclic loading experiment showed that the removal torque of the experimental group was greater than that of the control group. Furthermore, the single load-to-fracture test indicated that the 16/4 group had the greatest maximum bearing load. The in vitro cytotoxicity test using rat bone marrow stromal cells (rBMSCs) and human gingival fibroblast cells (hGFCs) showed no cytotoxicity in all 3 groups. The 3 experimental groups had obvious antibacterial effects against E. coli, S. aureus, and P. gingivalis.
Conclusion: A nontoxic antibacterial CS/β-GP/nAg thermosensitive hydrogel for lubricating purpose was successfully fabricated. When the volume ratio of CS to β-GP was 16/4, this thermosensitive hydrogel demonstrated better sealing and lubricating abilities and had a positive influence on the reliability of dental implant-abutment connection.
Keywords: abutment, dental implant, dental implant restoration, dental sealant, lubrication, thermosensitive hydrogel
Objective: To investigate the bond strength of resin-modified glass ionomer enhanced with bioactive glass (Activa BioActive-Base/Liner) to composite resin using different dental adhesive systems.
Study Design: In this study, Activa BioActive-Base/Liner (ABA/BL) was placed in cylindrical cavities formed in acrylic blocks. In blocks divided into 6 groups according to the adhesive system to be applied, two-step etch-and-rinse Gluma 2 Bond (Heraeus Kulzer, Germany), one-step self-etch Gluma Self Etch (Heraeus Kulzer), universal system Gluma Universal (Heraeus Kulzer), two-step self-etch Clearfil SE Protect (Kuraray, Japan), one-step self-etch Clearfil S3 Bond Plus (Kuraray), and universal system Clearfil S3 Bond Universal (Kuraray) adhesive systems were applied on ABA/BL. After composite resin (3M ESPE Filtek Ultimate) was applied to the prepared surfaces, the specimens were placed in a universal test device and shear bond strength test was determined. Fracture types were evaluated using a stereomicroscope and scanning electron microscope. Data were analyzed by Shapiro-Wilk, two-way ANOVA, Kruskal-Wallis, and Post-Hoc Multiple Comparisons tests.
Results: In terms of bond strength values, the highest bond value was seen in the two-step self-etch (Clearfil SE Protect) group, and the lowest bond strength value was seen in the universal system (Clearfil S3 Bond Universal) group. There was no statistically significant difference between the adhesive agent groups in terms of bond strength values (p>0.05).
Conclusion: It is thought that choosing the two-step self-etch technique as an adhesive system when resin-modified glass ionomer enhanced with bioactive glass (ABA/BL) is used as the pulp capping/base material will be more appropriate in terms of bond strength.
Keywords: adhesive systems, bioactive materials, bond strength, cariostatic agents, composite resins, dental materials, fluorides, glass ionomer, glass ionomer cements, materials testing, vital pulp therapy
Objective: To analyze the sonographic features of different histopathological subtypes of borderline ovarian tumors (BOTs) confirmed by pathology, and to study the ultrasound performances of various types in borderline ovarian tumors.
Study Design: Retrospective analysis was performed on the pathological results and ultrasound projection findings of 129 patients diagnosed as BOTs by ultrasound department of our hospital from January 2012 to November 2019. All patients were confirmed by surgical pathology and scanned consecutively by the investigators using transabdominal or transvaginal ultrasound examination.
Results: Serous borderline tumors (SBOTs) were observed, and the prevalence rate (53%) was significantly higher than that of other subtypes, and the probability of bilateral lesions was higher (40%). The sonogram often showed ultrasound features of papillary neoplasm in the lesion and good internal echo (p<0.05). Mucinous borderline ovarian tumors (MBOTs) were mostly unilateral lesions (86%). The prevalence was second only to SBOTs. Histomorphological examinations were divided into gastrointestinal-type and endocervical-type. Among them, the gastrointestinal type of MBOTs were mostly unilateral, and their incidence was higher than that of endocervical-type of MBOTs. Compared with other pathological subtypes, the gastrointestinal type is more likely to show the sonographic characteristics of huge space occupying in the pelvic and abdominal cavity (mean diameter >10 cm), polycystic, multiple septums, and poor internal echo (p<0.05). The ultrasonographic features of the endocervical-type of MBOTs were similar to those of SBOTs. Compared with gastrointestinal type, the sonographic images showed smaller lesion diameter, less septal or cyst, and more papillary excrescences in the tumor (p<0.05). The borderline clear cell tumor is the intermediate transition between the clear cell adenofibroma and the clear cell carcinoma. The clinical manifestations are diverse and lack specificity. The histology of sonography was mainly solid, and the multiple microcapsules were honeycomb-like. It can also be shown as cystic. Among the 169 patients with BOTs, 20 cases of SBOTs, 17 cases of MBOTs, and 10 cases of other rare subtypes were complicated with other diseases or multiple subtypes. This study did not find significant ultrasonic characteristics were used for distinguish them from other subtypes.
Conclusion: BOTs is a common disease in women during the reproductive period. It is characterized by the development of malignant tumors. Its clinical and pathological subtypes are complex and diverse. It leads many doctors to use the terms “large pelvic mass” and “solid ovarian mass” for diagnosis because of their lack of experience and understanding.
Keywords: adenocarcinoma, mucinous; adenocarcinoma, serous; borderline ovarian tumors; diagnostic imaging; ovarian neoplasms; papillary neoplasms; prognosis; transvaginal ultrasound, ultrasonography
Objective: The prognostic indictors of age-related poor outcomes in patients with acute myeloid leukemia (AML) are still controversial. The aim of this work was to provide comprehensive insights into the effect of different hemocytes and to investigate the association between age and clinical features in adult patients with AML.
Study Design: A retrospective study was performed to determine the role of age in the therapeutic outcomes of AML. A total of 166 newly diagnosed adult patients’ data from January 2015 to November 2019 in Zhongshan Hospital of Xiamen University were collected and analyzed.
Results: Older patients presented a poorer prognosis (p=0.001) with shorter overall survival, which is served as age-related outcomes. Binary logistic regression demonstrated that cytogenetic risk (OR=4.508, 95% CI 2.733–7.435), leukocyte (OR=7.410, 95% CI 1.139–5.910), and bone marrow blast cells (OR=3.261, 95% CI 1.075–5.615) were independent indictors for age-related prognosis. In addition, Kaplan-Meier curve also revealed that the above factors were associated with overall survival (all p values <0.001).
Conclusion: Cytogenetic risk, leukocyte, and bone marrow blast cells are dominant factors which account for the age-related poor outcomes and shorter overall survival in AML.
Keywords: acute myeloid leukemia, adult, cytogenetic risk, hemocyte, leukemia, overall survival
This study investigated the effects of intracoronary nicorandil and tirofiban on no-reflow phenomenon and clinical outcomes in 438 patients with acute coronary syndrome undergoing percutaneous coronary intervention. Both nicorandil and tirofiban improved TIMI blood flow grades after PCI, with TIMI grade 3 flow in 85.2% and 81.4% of patients respectively. There was no significant difference in major adverse cardiac events between the two groups. The study concluded that intracoronary nicorandil can improve coronary perfusion in ACS patients, but its effect on long-term prognosis requires further research.
Objective: To probe into the influence of miR-21 on the proliferation as well as apoptosis of oral squamous cell carcinoma (OSCC) and its causative role.
Study Design: We adopted microarray for detecting the differentially expressed genes in OSCC tumor tis-sues and paracancerous tissues. We assessed the link of miR-21 expression with tumor size, lymph node metastasis, and tumor differentiation. We employed CCK-8 and EdU assay for detecting the impact of miR-21 inhibitor and miR-21 mimic on Cal-27 cell proliferation, as well as TUNEL and AnnexinV-FITC/PI double staining for detecting miR-21 expression on cell apoptosis. We forecasted the possible target of miR-21 via TargetScan, as well as detected the interaction of miR-21 with PTEN via luciferase reporter experiment. The function of miR-21 expression in PTEN signaling pathway was monitored via western blot. We constructed PTEN overexpression plasmid and conducted rescue experiment to evaluate overexpressed PTEN on miR-21–induced proliferation.
Results: Microarray and RT-qPCR indicated that miR-21 expression increased demonstrably in OSCC. Subsequently, statistical analysis showed that miR-21 expression was plainly correlated with tumor size, lymph node metastasis, tumor differentiation, and smoking history. CCK-8 and EdU method exhibited that miR-21 mimics manifestly promoted Cal-27 cell proliferation, while miR-21 inhibitor blatantly inhibited Cal-27 cell proliferation. TUNEL and V-FITC/PI double staining assay showed that miR-21 inhibitor conspicuously promoted Cal-27 cell apoptosis. CCK-8 and EdU assay exhibited that overexpressed PTEN abolished the pro-proliferation influence of miR-21 mimic. TUNEL and V-FITC/PI experiments pointed out that knocking down PTEN abrogated the pro-apoptosis impact of miR-21 inhibitor.
Conclusion: miR-21 contributes to OSCC cell proliferation via targeting PTEN and inhibits its apoptosis.
Keywords: Akt/PKB signaling pathway; apoptosis; biomarkers, tumor; carcinoma, squamous cell; cell line, tumor; cell proliferation; microRNAs; miR-21; miRNA-21; mouth neoplasms; oral cancer; oral squamous cell carcinoma; proliferation; real time PCR
Objective: Tongue squamous cell carcinoma (TSCC) is a prominent type of oral cancer. Despite the numerous research studies on SCC and microRNAs (miRs), the relation between TSCC and miR-135b-5p is poorly discussed. This experiment aims to find out the possible effect of miR-135b-5p on TSCC with the network of its downstream genes.
Study Design: TSCC tissues and adjacent normal tissues were harvested. Then, expression of miR-135b-5p and AT-rich interactive domain‑containing protein 1A gene (ARID1A) and the phosphatidyl inositol 3-kinase/protein kinase B (PI3K/AKT) pathway was analyzed. After the transfection of miR-135b-5p inhibitor and its negative control into TSCC cells, functional assays were employed to measure cell proliferation, apoptosis, and cycle. Next, the target relation between miR-135b-5p and ARID1A was confirmed. In addition, the fact that miR-135b-5p promoted TSCC development via mediating ARID1A was demonstrated by functional rescue experiment.
Results: miR-135b-5p was upregulated in TSCC tissues and cells, while ARID1A was suppressed (p< 0.05). Silenced miR-135b-5p discouraged TSCC cell proliferation, improved apoptosis, induced cell cycle arrest, and increased ARID1A expression while inactivating the PI3K/AKT axis (p<0.05). Furthermore, knockdown of ARID1A reversed the impacts on TSCC cell proliferation and apoptosis exerted by silencing miR-135b-5p.
Conclusion: This research supported that silenced miR-135b-5p impeded TSCC proliferation and apoptosis by promoting ARID1A and inactivating the PI3K/AKT axis, which may provide some indications for TSCC alleviation.
Keywords: apoptosis; ARID1A; ARID1A protein, human; carcinoma, squamous cell; cell line, tumor; cell proliferation; drug resistance, neoplasm; microRNA-135b-5p; microRNAs; PI3K/AKT pathway; neoplasm metastasis; neoplastic stem cells; proliferation; protein binding; tongue; tongue squamous cell carcinoma
Objective: To examine the oropharynx of patients with ectodermal dysplasia showing maxillary retrusion and mandibular protrusion with a short and concave facial structure using cone-beam computed tomography method. Ectodermal dysplasia refers to the congenital disorder defined by the abnormal development of the structure originating from the ectoderm.
Study Design: In order to examine the oropharynx airway, measurements and statistical evaluations were made in 3 levels in sagittal and transversal directions on three-dimensional cone beam computed tomography images obtained from 14 individuals divided into 2 groups as Ectodermal Dysplasia group (n=7) and Control group (n=7).
Results: As a result of statistical analysis, no statistically significant difference was found between the groups at any level or direction in metric measurements performed on all 3 planes taken at the sagittal and transversal levels (p>0.05).
Conclusion: Our findings on ectodermal dysplasia are similar to Class III malpositions that show similarity with ectodermal dysplasia.
Objective: Diabetic nephropathy is one of the most serious complications of diabetes mellitus. It develops in approximately one-third of diabetic patients, years after the onset of metabolic abnormalities.
Study Design: The biopsy specimens were evaluated with the focus on light microscopy. The aim of our study was to reveal differences in the details and the frequency of occurrence of individual histomorphological changes in diabetic nephropathy and other glomerulonephritides.
Results: Diabetic nephropathy accounted for 14 out of 82 analyzed biopsies. Isolated thickening of the glomerular basement membrane was not present in any case, but along with some degree of mesangial expansion, hypercellularity or glomerulosclerosis was seen in 12 out of 14 findings of diabetic nephropathy. In other glomerular diseases, mesangial changes, but without glomerular basement membrane thickening, were the most frequent findings. In addition to glomerular lesions, some of the tubular, interstitial, and vascular changes were seen in 13 out of 14 patients with diabetic nephropathy. In other glomerulonephritides the combination of all these changes was a rare finding.
Conclusion: There are cases where immunofluorescence and electron microscopy cannot be performed or their results are not helpful. In such cases we must rely on light microscopic histomorphological changes.
The document describes an experiment that aimed to establish a model of cardiomyocyte hypertrophy using cultured neonatal rat cardiomyocytes treated with angiotensin II (Ang II). The effects of rutin treatment on various markers of hypertrophy were then observed. Rutin treatment inhibited Ang II-induced increases in cardiomyocyte surface area, intracellular calcium levels, and expression of hypertrophy marker proteins. Rutin also inhibited decreases in calcium ATPase activity and nitric oxide levels caused by Ang II. The results suggest rutin has protective effects against Ang II-induced cardiomyocyte hypertrophy, potentially by regulating intracellular calcium handling and nitric oxide signaling.
This study investigated the expression of Caspase-12 and ADAMTS-5 in placental samples from 15 pregnant women with placenta previa and 15 healthy pregnant women. Histopathological examination found significant degeneration and apoptotic changes in the placenta previa group. Immunohistochemical analysis showed increased expression of ADAMTS-5 and Caspase-12 in the placenta previa group. The researchers concluded that increased expression of these proteins, which are involved in extracellular matrix development, inflammation, and angiogenesis, may negatively impact maternal function and fetal development in placenta previa.
This document describes a case study of a rare case of cardiac metastases from solid papillary carcinoma (SPC) of the breast. A 67-year-old woman with a history of breast cancer underwent surgery to remove a tumor in her right atrium. Pathological examination of the tumor found that it was an invasive SPC of the breast that had metastasized to the heart. Immunohistochemical staining confirmed the diagnosis. Analysis of this case improves understanding of the diagnosis and treatment of metastatic SPC of the breast to rare sites like the heart.
This study aimed to evaluate whether the maturation index, calculated based on nuclear area measurements of melanocytes in the upper and lower parts of lesions, can help differentiate challenging melanocytic lesions. The researchers measured nuclear areas in 32 invasive cutaneous melanomas, 35 dysplastic nevi, and 31 benign nevi immunostained with Sox10. They found statistically significant differences in the mean maturation index between melanomas and dysplastic nevi and between melanomas and benign nevi. However, pseudo-maturation in melanomas was not associated with survival outcomes. The study concludes that the maturation index may help in differential diagnosis but has limitations for some melanoma subtypes.
This study explored the role of miR-630 in enhancing the chemotherapeutic sensitivity of BRCA1 mutant triple-negative breast cancer (TNBC) cell lines. The researchers found that combining carboplatin and gemcitabine chemotherapy with the PARP inhibitor olaparib upregulated miR-630 expression in BRCA1 mutant MDA-MB-436 and HCC1937 TNBC cell lines. Overexpression of miR-630 suppressed cell proliferation, migration, and invasion, whereas inhibition of miR-630 increased these effects. Therefore, miR-630 plays an important tumor suppressor role in increasing the chemotherapeutic sensitivity of PARP inhibitors for BRCA1 mutant TNBC, which may be one mechanism of how PAR
The document describes a study that aimed to reconstruct the 3D structure of the tibial nerve through micro-CT imaging. Tibial nerve samples were stained with calcium chloride and scanned with micro-CT to obtain 2D images. The nerve bundle contours were then extracted from these images using an automated algorithm. This allowed for the successful construction of a 3D model of the tibial nerve bundles. The 3D reconstruction provides detailed visualization of the nerve's internal structure and geometry. This technique is an improvement over previous methods and lays the foundation for further research on peripheral nerve anatomy and repair.
This study analyzed the expression and clinical significance of serum biomarkers AFP, P-selectin (P-sel), and MMP-9 in patients with hepatic sclerosis combined with portal vein thrombosis (PVT). The study found that levels of all three biomarkers were significantly higher in patients with hepatic sclerosis and PVT compared to patients with hepatic sclerosis alone. Furthermore, AFP, P-sel, and MMP-9 were identified as main risk factors for PVT. The expression of AFP was also found to be positively correlated with the expression of P-sel and MMP-9 in patients with hepatic sclerosis and PVT.
This case report describes a successful case of managing placenta percreta with invasion into the bladder. A 33-year-old woman at 35 weeks of gestation was found to have placenta previa and suspected placenta percreta. During a cesarean section and hysterectomy, it was discovered that newly formed vessels from the placenta had invaded the bladder wall. Prophylactic balloon occlusion of the lower abdominal aorta was performed to control hemorrhaging. The placenta, uterus, and part of the invaded bladder wall were removed. The massive intraoperative hemorrhage was successfully controlled and the patient recovered well. The management of newly formed vessels is crucial for effective treatment of placent
This study examined neurons in the medulla oblongata related to gastric mucosal lesions in rats subjected to restraint water-immersion stress (RWIS). The study found that compared to controls, RWIS rats had: 1) increased cholinergic neurons in the dorsal motor nucleus of the vagus and nucleus ambiguous, and increased catecholaminergic neurons in the nucleus of the solitary tract; 2) increased oxytocin receptor- and vasopressin 1b receptor-expressing neurons in the dorsal motor nucleus and nucleus of the solitary tract; but 3) no difference in methionine-enkephalin-expressing neurons in the nucleus of the solitary tract. This suggests hyperactivity of cholinergic and cate
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2. nisms.2 After SCI, neurogenic bladder dysfunction
may occur due to neural pathways or neuromus-
cular junctions which control the lower urinary
tract interrupting the communication. Upper and
lower neuron lesions may develop in neurogenic
bladder dysfunction. Lower motor neuron lesions
are lesions that develop at or below the conus
medullaris. Efferent (motor), afferent (sensory),
or both portions of the sacral arc pathway suffer
because of these lesions, leading to no or de-
creased reflexes of the detrusor muscle with a
normal or underactive external sphincter. With
a denervated or underactive external sphincter,
coordination between detrusor contraction and
sphincter relaxation occurs during bladder emp-
tying.3 Upper motor neuron lesions are divided
as intracranial and spinal lesions. In intracranial
(suprapontine) lesions, cortical input that inhibits
detrusor contractility is blocked. In spinal (supra-
sacral or infrapontine) lesions, the region above
the conus medullaris is affected and the sacral re-
flex arc is spared.4,5
High expression of VEGF has been reported to
be associated with immature angiogenesis in the
bladder wall and bladder afferent nerve sensitiza-
tion. It has been shown that visceral hyperalgesia
and pelvic pain leads to, for example, neuropathic
pain and inflammation, as well as a shift in VEGF
alternative splice variant expression, as well as dif
ferential effects on pain. Tooke et al also showed
increased expression of total VEGF in the bladders
of women with interstitial cystitis/bladder pain
syndrome.6 APAF-1 is an important component of
the apoptotic complex and is an important marker
of the mitochondrial endogenous apoptotic path-
way. After induction of apoptosis, cytochrome c is
incorporated into the cytoplasm in the presence
of ATP, which activates APAF-1 and induces con-
formational changes in its protein, aggregating
and activating procaspase-9 to form the apoptotic
complex.7 In this study, it was aimed to investigate
the angiogenic and apoptotic effects on the bladder
after spinal cord injury.
Materials and Methods
Wistar Albino rats 8–10 weeks old were kept at
22±2ºC and 12 hours light and 12 hours dark cycles
and were fed a normal diet and tap water without
any restrictions. Under anesthesia, the rats were
incised in the midline between T5 and T12 verte-
bras, and the paravertebral muscles were pushed
aside to expose the laminas. Later, at T7-T8-T9
vertebras, laminectomy was performed and a steel
rod 3 mm in diameter and 10 g in weight was
dropped from 10 cm to create a spinal cord injury.8
The control group was given the same dose of
saline. Twenty Wistar Albino rats were divided
into 2 groups with 10 in each: (1) Control Group
(no trauma was induced in these rats. Only placebo
saline was applied). (2) SCI Group (the rats in this
group were traumatized as described above. Only
placebo saline was administered to the rats).
The rats were decapitated, and spinal tissue was
processed for malondialdehyde (MDA), glutathi-
one (GSH), and myeloperoxidase (MPO) and also
for routine light microscopic tissue processing.
The spinal cord was stored in 10% formaldehyde
for histological examination and fixed for 24 hours.
Hematoxylin-eosin staining and immunohistoche
mical staining with VEGF and APAF-1 were per-
formed.
Biochemical Analysis
Urinary bladder samples were homogenized with
super cold 150 mM KCl for the assurance of MDA
and GSH levels. The MDA levels were tested for
the products of lipid peroxidation, and the out-
comes are expressed as nmol MDA/g tissue. GSH
was resolved by a spectrophotometric technique in
light of the utilization of Ellman’s reagent, and the
outcomes were expressed as μmol GSH/g tissue.9
Measurement of MPO Activity
The MPO activity levels were measured using the
method described by Hillegass et al.10 Urinary
bladder tissue specimens were homogenized in
50 mM potassium phosphate buffer with a pH of
6.0 and centrifuged at 41,400 g for 10 minutes. The
pellets were then suspended in 50 mM PB contain-
ing 0.5% hexadecyl trimethyl-ammonium bromide.
After 3 freeze and defrost cycles, with sonication
between cycles, the samples were centrifuged at
41,400 g for 10 minutes. Aliquots (0.3 mL) were
added to 2.3 mL of the response mixture contain-
ing 50 mM PB, o-dianisidine, and 20 mM H2O2
solution. One unit of enzyme action was charac
terized as the measure of MPO presence that
caused an adjustment in absorbance, estimated at
460 nm for 3 minutes. MPO action was expressed
as µ/g tissue.
Immunohistochemical Analysis
An antigen-retrieval process was performed in
citrate buffer solution (pH 6.0) 2 times: first for
138 Analytical and Quantitative Cytopathology and Histopathology®
Yariş and Deveci
3. 8 minutes and then for 6 minutes in a microwave
oven at 700 W. They were allowed to cool to room
temperature for 30 minutes and washed in distilled
water for 5 minutes twice. Endogenous peroxidase
activity was blocked in 0.1% hydrogen peroxide
for 15 minutes. Ultra V block (Histostain-Plus Kit,
Invitrogen, Carlsbad, California, USA) was ap-
plied for 10 minutes prior to the application of
the primary antibodies VEGF and APAF-1 over-
night. The secondary antibody (Histostain-Plus Kit)
was applied for 20 minutes. Then the slides were
exposed to streptavidin-peroxidase for 20 minutes.
Diaminobenzidine (DAB, Invitrogen) was used as
a chromogen. Control slides were prepared as
mentioned above but omitting the primary antibod-
ies. After counterstaining with hematoxylin, wash-
ing in tap water for 3 minutes and in distilled water
for 2×3 min, the slides were mounted.11
Statistical Analysis
The data were recorded as arithmetic mean±
standard deviation with mean rank value. Sta-
tistical analysis was done using the IBM SPSS
25.0 software (IBM SPSS Statistics for Windows,
Version 25.0, Released 2017, IBM Corp., Armonk,
New York, USA). Kruskal-Wallis test was used for
multiple comparisons. Mann-Whitney U tests were
used for within-group comparisons. P<0.05 was
used as the significance level.
Results
Statistical analyses of biochemical, histopathologi-
cal, and immunohistochemical scoring are shown
in Table I. In terms of MDA, MPO, epithelial de
generation, vascular dilation, inflammation, VEGF,
and APAF-1 expression, there was an increase in
values in the SCI group as compared to the con-
trol group, and this increase was statistically sig
nificant. Only GSH content was decreased in the
SCI group as compared to the control group, and
the decrease was statistically significant. A graphi-
cal illustration of Table I is shown in Figure 1.
Histopathological and immunohistochemical
staining is shown in Figure 1. Transitional epithe-
lial cells in the control group sections were poly-
gonal in shape and were regularly located. The
connective tissue cells and fibers were unevenly
distributed, and the circular muscle fibers were
free. Blood vessels showed mild congestion, and
endothelial cells were seen in a fusiform structure
(Figure 1A). In the SCI group, degeneration of cells
in the transitional epithelial layer, thinning of the
epithelium, increase in fibrotic tissue in connec-
tive tissue, mild deterioration in muscle tissue,
Volume 43, Number 3/June 2021 139
Changes in the Bladder After Spinal Cord Injury
Table I Biochemical (MDA, GSH, and MPO) and Histopathological (Epithelial Degeneration, Vascular Dilation, Inflammation, Expression
Levels) of Control and Spinal Cord Injury Groups
Mann-Whitney
Mean Kruskal-Wallis U test
Parameter Group N Mean±SD rank test value (p<0.05)
MDA (1) Control 10 32.51±3.93 5.50 14.29 (2)
(2) SCI 10 56.80±4.13 15.50 p=0.001 (1)
GSH (1) Control 10 1.67±0.15 15.50 14.29 (2)
(2) SCI 10 0.75±0.13 5.50 p=0.001 (1)
MPO (1) Control 10 4.75±0.72 5.50 14.29 (2)
(2) SCI 10 7.87±0.74 15.50 p=0.001 (1)
Epithelial degeneration (1) Control 10 0.80±0.63 5.50 15.25 (2)
(2) SCI 10 3.60±0.52 15.50 p=0.001 (1)
Vascular dilation (1) Control 10 1.00±0.67 5.50 15.22 (2)
(2) SCI 10 3.40±0.52 15.50 p=0.001 (1)
Inflammation (1) Control 10 1.10±0.57 5.60 14.82 (2)
(2) SCI 10 3.20±0.63 15.40 p=0.001 (1)
VEGF expression (1) Control 10 1.70±0.48 6.55 10.53 (2)
(2) SCI 10 2.80±0.63 14.45 p=0.001 (1)
APAF-1 expression (1) Control 10 1.00±0.67 5.70 13.90 (2)
(2) SCI 10 3.10±0.74 15.30 p=0.001 (1)
SD = standard deviation.
4. excessive dilation and congestion in blood vessels,
and hyperplasia in endothelial cells were observed
(Figure 1B). In the immunohistochemical exam-
ination, VEGF expression was positive in some
epithelial cells, and small blood vessel endothelial
cells, macrophage in connective tissue, and plasma
cells were observed in the control group (Figure
1C). In the SCI group, increased VEGF expression
was observed in inflammatory cells and hyper-
plastic endothelial cells in dilated blood vessels
along with epithelial degeneration and connective
tissue inflammation (Figure 1D). Negative APAF-
140 Analytical and Quantitative Cytopathology and Histopathology®
Yariş and Deveci
Figure 1 (A) Control group: polygonal cell epithelium, connective tissue, and muscle cells in fusiform appearance (H-E staining).
(B) Trauma group: degeneration and thinning of cells in the transitional epithelial layer, increase in fibrotic tissue in connective tissue,
mild deterioration in muscle tissue, dilation and congestion in blood vessels, hyperplasia in endothelial cells (H-E staining). (C) Control
group: positive VEGF expression in some epithelial cells, small blood vessel endothelial cells, macrophage in connective tissue (VEGF
immunostaining). (D) Trauma group: an increase in VEGF expression in inflammatory cells and hyperplastic endothelial cells in dilated
blood vessels (VEGF immunostaining). (E) Control group: no APAF-1 expression was observed (APAF-1 immunostaining). (F) Trauma
group: APAF-1 was expressed in epithelial tissue, inflammatory cells, and blood vessels (APAF-1 immunostaining).
5. 1 expression in epithelial cells, connective tissue,
and muscle cells was observed in the control group
(Figure 1E). In the SCI group, APAF-1 expression
was positive in pyknotic nuclei due to epithelial
degeneration, and APAF-1 expression in inflam
matory cells in the connective tissue area and en-
dothelial and muscle cells showed a positive reac-
tion (Figure 1F).
Discussion
One of the important functions in the urinary tract
is the storage and excretion of urine. The urina-
tion reflex is mediated by a bulbospinal pathway
through the pontine voiding centers (Barrington
nuclei) in the rostral brainstem.12 Urination occurs
by the association of autonomic and somatic path-
ways within the lumbosacral cord.13 Disruption of
the pathways between the pontine voiding center
and the sacral spinal cord in rats was considered
a model of spinal cord injury. Spinal cord injury
is a clinical condition that heavily affects patient
quality of life, morbidity, and mortality. Incidence
of SCI in the USA is annually 17,730 cases, with
more than 291,000 affected individuals.14 SCI is
also one of the most common causes of neuro-
genic bladder that leads to loss of bladder func-
tion.15 Depending on the severity, extent, and level
of injury, neurogenic bladder may have low or
hyper detrusor activity. The pathophysiology of
SCI is a highly complex process with neurolog-
ical lesions, diseases, and bladder and sphincter
injuries.16 A study by Compérat et al showed that
histopathological changes occur in neurogenic
bladder.17 They showed that inflammatory infil-
tration, edema, and fibrosis of the bladder wall
were observed. Janzen et al recorded histological
changes such as severe fibrosis in the lamina pro-
pria and muscularis, hyalinization in the wall, dis-
array of smooth muscle cells with leiomyomatous-
like hyperplasia, and chronic inflammatory infil-
trates in neurogenic bladder.18 Our histopatholog-
ical findings of degeneration of cells in the transi-
tional epithelial layer, thinning of the epithelium,
increase in fibrotic tissue in connective tissue, mild
deterioration in muscle tissue, excessive dilation
and con
gestion in blood vessels, and hyperplasia
in endothelial cells were observed (Figure 1B). It
is thought that urine storage, muscle reflex, and
functional functions may be altered in the bladder
due to cellular degeneration and muscle disorgani-
zation.
Vascular endothelial growth factor (VEGF) is a
potent angiogenic factor expressed in angiogenesis
and progression of various tumor types. Aposto-
lidis et al19 studied neurogenic detrusor overactiv-
ity and showed that VEGF expression was weak.
They stated that more studies are needed to in-
vestigate vascular changes with levels of bladder
overactivity. Another study on idiopathic over-
active bladder urothelial cells during stretch was
performed and revealed that stretching of an over-
active bladder increased the expression of mRNA
for VEGF by 1.5-fold, 1.5-fold, and 3.5-fold as com-
pared with an unstretched overactive bladder, sug-
gesting that these findings may contribute to the
understanding of overactive bladder.20 Herrera et
al21 measured the level of VEGF as a potential in-
terventional therapy for spinal cord injury by west-
ern blot analysis. They found significant decrease
in the levels of VEGF and other VEGF isoforms at
the lesion epicenter 1 day after injury. Chen et al22
examined VEGF signaling pathway on spinal cord
injury in rats. Their results showed that the con-
trol and sham groups had lowest VEGF expres-
sion by immunohistochemistry. In our study, after
trauma, increased VEGF expression was observed
in dilated blood vessels and inflamed cells, as well
as in hyperplastic endothelial cells, with epithelial
cell degeneration and connective tissue inflamma-
tion. It induced angiogenesis (Figure 1D).
APAF1 is the structural core of the apoptosome
which takes places in the intrinsic or mitochon-
drial pathway of apoptosis. Emery et al examined
spinal cords of 15 patients who died between 3
hours and 2 months after a traumatic SCI. They
found that apoptosis occurs in the spinal cord
where injury was developed by caspase 3 immu-
nostaining and other histological staining.23 Casha
et al24 conducted an SCI experiment on rats and
showed axonal degeneration after SCI. The au-
thors correlated this finding with oligodendroglial
apoptosis by confirming with FAS and p75 ex
pression analysis. In a study of SCI, caspase-8 and
caspase-9 expression level was elevated 6-hours
after SCI, showing apoptosis and neuronal death.
They also analyzed caspase-3 expression, stating
that caspase-3 was expressed first at 24 hours af-
ter SCI.25 After trauma, pyknosis in the nuclei as
a result of epithelial degeneration, increase in in
flammatory cells, hyperplasia in endothelial cells,
and change in muscle cells caused an increase in
APAF-1 reaction and prolongation of the apoptotic
process (Figure 1F).
In conclusion, spinal cord injury causes im-
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Changes in the Bladder After Spinal Cord Injury
6. paired bladder activity with degenerative changes
in the bladder epithelium, inducing the apoptotic
process. SCIs also disrupt blood vessel organiza-
tion and increased inflammation in connective
tissue, promoting angiogenesis. We suggest that
increased inflammation in the bladder can signifi-
cantly affect the urination reflex, causing changes
in the regulation and function of the muscles.
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