This study evaluated human gingival fibroblast and mesenchymal stem cell migration, proliferation, and membrane stiffness using perforated collagen membranes. Cells were cultured from gingival tissue and tested for surface markers. Migration was assessed using transwell assays with membranes perforated at 0.2, 0.4, and 0.7 mm. Proliferation was measured using MTT assays. Membrane stiffness was analyzed by tensile testing. Cell migration increased with larger perforations while proliferation was similar. Membranes remained stiff with perforations up to 0.7 mm. The results suggest perforated membranes could enhance regeneration by allowing cell migration but smaller pores may better prevent tissue ingrowth.
“Periodontal Regeneration- New Vistas”- Guest lecture as a part of Dr NTRUHS Zonal CDE programme at SVS Institute of Dental Sciences, Mahabubnagar, India on 12/3/2013 and at Meghna Dental College, Nizamabad, India on 31/7/2013.
“Periodontal Regeneration- New Vistas”- Guest lecture as a part of Dr NTRUHS Zonal CDE programme at SVS Institute of Dental Sciences, Mahabubnagar, India on 12/3/2013 and at Meghna Dental College, Nizamabad, India on 31/7/2013.
The future of dentistry and periodontics lies in regeneration. The goals of periodontal therapy lies in not only the arrest of periodontal disease progression but also regeneration of the lost periodontal structures. This presentation provides a review of the current understanding of the regeneration of the periodontium and the procedures involved to restore the periodontal tissues around the teeth.
It is sometimes difficult in clinical and experimental situations to determine whether regeneration or new attachment has occurred and the extent to which it has occurred.
Although there are various evidences of reconstruction, the proof of principle for the type of healing is determined by histological studies.
Current Status of Nanotechnology Methods Applied For Dental Implantsinventionjournals
International Journal of Pharmaceutical Science Invention (IJPSI) is an international journal intended for professionals and researchers in all fields of Pahrmaceutical Science. IJPSI publishes research articles and reviews within the whole field Pharmacy and Pharmaceutical Science, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online.
INTRODUCTION
KEY ELEMENTS IN TISSUE ENGINEERING
- Progenitor cells
- Scaffold
- Signalling molecules
DESIRED PROPERTIES AND WAYS TO ENHANCE THE REGENERATIVE CAPACITY OF SCAFFOLDS
4. GENE THERAPY IN PERIODONTAL TISSUE ENGINEERING
5. RECENT DEVELOPMENTS
6. CRITICAL ANALYSIS OF PRESENT STATUS OF TISSUE ENGINEERING FOR PERIODONTICS.
4. CONCLUSION
5. REFERENCES
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.
The future of dentistry and periodontics lies in regeneration. The goals of periodontal therapy lies in not only the arrest of periodontal disease progression but also regeneration of the lost periodontal structures. This presentation provides a review of the current understanding of the regeneration of the periodontium and the procedures involved to restore the periodontal tissues around the teeth.
It is sometimes difficult in clinical and experimental situations to determine whether regeneration or new attachment has occurred and the extent to which it has occurred.
Although there are various evidences of reconstruction, the proof of principle for the type of healing is determined by histological studies.
Current Status of Nanotechnology Methods Applied For Dental Implantsinventionjournals
International Journal of Pharmaceutical Science Invention (IJPSI) is an international journal intended for professionals and researchers in all fields of Pahrmaceutical Science. IJPSI publishes research articles and reviews within the whole field Pharmacy and Pharmaceutical Science, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online.
INTRODUCTION
KEY ELEMENTS IN TISSUE ENGINEERING
- Progenitor cells
- Scaffold
- Signalling molecules
DESIRED PROPERTIES AND WAYS TO ENHANCE THE REGENERATIVE CAPACITY OF SCAFFOLDS
4. GENE THERAPY IN PERIODONTAL TISSUE ENGINEERING
5. RECENT DEVELOPMENTS
6. CRITICAL ANALYSIS OF PRESENT STATUS OF TISSUE ENGINEERING FOR PERIODONTICS.
4. CONCLUSION
5. REFERENCES
The Indian Dental Academy is the Leader in continuing dental education , training dentists in all aspects of dentistry and
offering a wide range of dental certified courses in different formats.
International Journal of Stem Cell Research and Transplantation (IJST) is an international, Open Access, peer-reviewed journal, which mainly focuses, on the advancements made in the field of cell biology, specifically in the field of Stem Cells.
International Journal of Stem Cell Research and Transplantation (IJST) is a peer-reviewed journal, and is dedicated to providing information with respect to the latest advancements that are being upgraded in our everyday life with respect to the application of Stem cells.
International Journal of Stem Cell Research and Transplantation (IJST) ISSN:2328-3548, is a free, Open Access, Peer-reviewed, exclusive online journal covering areas of Stem cell research, translational work and Clinical studies in the specialty of Stem Cells and Transplantation including allied specialties relevant to the core subject, which is dedicated in publishing high quality manuscripts.
Effect of Surface Engineering on Stem Cells.pdfaman15nanavaty
A thorough review covering the nascent domain of Surface Engineering on Stem Cells. This short review will cover basic details of Stem Cell Engineering and Cell Culture Surface Engineering.
Bone Morphogenetic Proteins - Role in Periodontal RegenerationDr.Shraddha Kode
BMP's are the multifunctional growth factors extensively studied throughout the years. It has recently gained a lot of interest as therapeutic agents in periodontal regeneration.
The prostate is an exocrine gland of the male mammalian reproductive system
It is a walnut-sized gland that forms part of the male reproductive system and is located in front of the rectum and just below the urinary bladder
Function is to store and secrete a clear, slightly alkaline fluid that constitutes 10-30% of the volume of the seminal fluid that along with the spermatozoa, constitutes semen
A healthy human prostate measures (4cm-vertical, by 3cm-horizontal, 2cm ant-post ).
It surrounds the urethra just below the urinary bladder. It has anterior, median, posterior and two lateral lobes
It’s work is regulated by androgens which are responsible for male sex characteristics
Generalised disease of the prostate due to hormonal derangement which leads to non malignant enlargement of the gland (increase in the number of epithelial cells and stromal tissue)to cause compression of the urethra leading to symptoms (LUTS
New Directions in Targeted Therapeutic Approaches for Older Adults With Mantl...i3 Health
i3 Health is pleased to make the speaker slides from this activity available for use as a non-accredited self-study or teaching resource.
This slide deck presented by Dr. Kami Maddocks, Professor-Clinical in the Division of Hematology and
Associate Division Director for Ambulatory Operations
The Ohio State University Comprehensive Cancer Center, will provide insight into new directions in targeted therapeutic approaches for older adults with mantle cell lymphoma.
STATEMENT OF NEED
Mantle cell lymphoma (MCL) is a rare, aggressive B-cell non-Hodgkin lymphoma (NHL) accounting for 5% to 7% of all lymphomas. Its prognosis ranges from indolent disease that does not require treatment for years to very aggressive disease, which is associated with poor survival (Silkenstedt et al, 2021). Typically, MCL is diagnosed at advanced stage and in older patients who cannot tolerate intensive therapy (NCCN, 2022). Although recent advances have slightly increased remission rates, recurrence and relapse remain very common, leading to a median overall survival between 3 and 6 years (LLS, 2021). Though there are several effective options, progress is still needed towards establishing an accepted frontline approach for MCL (Castellino et al, 2022). Treatment selection and management of MCL are complicated by the heterogeneity of prognosis, advanced age and comorbidities of patients, and lack of an established standard approach for treatment, making it vital that clinicians be familiar with the latest research and advances in this area. In this activity chaired by Michael Wang, MD, Professor in the Department of Lymphoma & Myeloma at MD Anderson Cancer Center, expert faculty will discuss prognostic factors informing treatment, the promising results of recent trials in new therapeutic approaches, and the implications of treatment resistance in therapeutic selection for MCL.
Target Audience
Hematology/oncology fellows, attending faculty, and other health care professionals involved in the treatment of patients with mantle cell lymphoma (MCL).
Learning Objectives
1.) Identify clinical and biological prognostic factors that can guide treatment decision making for older adults with MCL
2.) Evaluate emerging data on targeted therapeutic approaches for treatment-naive and relapsed/refractory MCL and their applicability to older adults
3.) Assess mechanisms of resistance to targeted therapies for MCL and their implications for treatment selection
These lecture slides, by Dr Sidra Arshad, offer a quick overview of physiological basis of a normal electrocardiogram.
Learning objectives:
1. Define an electrocardiogram (ECG) and electrocardiography
2. Describe how dipoles generated by the heart produce the waveforms of the ECG
3. Describe the components of a normal electrocardiogram of a typical bipolar leads (limb II)
4. Differentiate between intervals and segments
5. Enlist some common indications for obtaining an ECG
Study Resources:
1. Chapter 11, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 9, Human Physiology - From Cells to Systems, Lauralee Sherwood, 9th edition
3. Chapter 29, Ganong’s Review of Medical Physiology, 26th edition
4. Electrocardiogram, StatPearls - https://www.ncbi.nlm.nih.gov/books/NBK549803/
5. ECG in Medical Practice by ABM Abdullah, 4th edition
6. ECG Basics, http://www.nataliescasebook.com/tag/e-c-g-basics
NVBDCP.pptx Nation vector borne disease control programSapna Thakur
NVBDCP was launched in 2003-2004 . Vector-Borne Disease: Disease that results from an infection transmitted to humans and other animals by blood-feeding arthropods, such as mosquitoes, ticks, and fleas. Examples of vector-borne diseases include Dengue fever, West Nile Virus, Lyme disease, and malaria.
Ozempic: Preoperative Management of Patients on GLP-1 Receptor Agonists Saeid Safari
Preoperative Management of Patients on GLP-1 Receptor Agonists like Ozempic and Semiglutide
ASA GUIDELINE
NYSORA Guideline
2 Case Reports of Gastric Ultrasound
Flu Vaccine Alert in Bangalore Karnatakaaddon Scans
As flu season approaches, health officials in Bangalore, Karnataka, are urging residents to get their flu vaccinations. The seasonal flu, while common, can lead to severe health complications, particularly for vulnerable populations such as young children, the elderly, and those with underlying health conditions.
Dr. Vidisha Kumari, a leading epidemiologist in Bangalore, emphasizes the importance of getting vaccinated. "The flu vaccine is our best defense against the influenza virus. It not only protects individuals but also helps prevent the spread of the virus in our communities," he says.
This year, the flu season is expected to coincide with a potential increase in other respiratory illnesses. The Karnataka Health Department has launched an awareness campaign highlighting the significance of flu vaccinations. They have set up multiple vaccination centers across Bangalore, making it convenient for residents to receive their shots.
To encourage widespread vaccination, the government is also collaborating with local schools, workplaces, and community centers to facilitate vaccination drives. Special attention is being given to ensuring that the vaccine is accessible to all, including marginalized communities who may have limited access to healthcare.
Residents are reminded that the flu vaccine is safe and effective. Common side effects are mild and may include soreness at the injection site, mild fever, or muscle aches. These side effects are generally short-lived and far less severe than the flu itself.
Healthcare providers are also stressing the importance of continuing COVID-19 precautions. Wearing masks, practicing good hand hygiene, and maintaining social distancing are still crucial, especially in crowded places.
Protect yourself and your loved ones by getting vaccinated. Together, we can help keep Bangalore healthy and safe this flu season. For more information on vaccination centers and schedules, residents can visit the Karnataka Health Department’s official website or follow their social media pages.
Stay informed, stay safe, and get your flu shot today!
Report Back from SGO 2024: What’s the Latest in Cervical Cancer?bkling
Are you curious about what’s new in cervical cancer research or unsure what the findings mean? Join Dr. Emily Ko, a gynecologic oncologist at Penn Medicine, to learn about the latest updates from the Society of Gynecologic Oncology (SGO) 2024 Annual Meeting on Women’s Cancer. Dr. Ko will discuss what the research presented at the conference means for you and answer your questions about the new developments.
micro teaching on communication m.sc nursing.pdfAnurag Sharma
Microteaching is a unique model of practice teaching. It is a viable instrument for the. desired change in the teaching behavior or the behavior potential which, in specified types of real. classroom situations, tends to facilitate the achievement of specified types of objectives.
- Video recording of this lecture in English language: https://youtu.be/lK81BzxMqdo
- Video recording of this lecture in Arabic language: https://youtu.be/Ve4P0COk9OI
- Link to download the book free: https://nephrotube.blogspot.com/p/nephrotube-nephrology-books.html
- Link to NephroTube website: www.NephroTube.com
- Link to NephroTube social media accounts: https://nephrotube.blogspot.com/p/join-nephrotube-on-social-media.html
Ethanol (CH3CH2OH), or beverage alcohol, is a two-carbon alcohol
that is rapidly distributed in the body and brain. Ethanol alters many
neurochemical systems and has rewarding and addictive properties. It
is the oldest recreational drug and likely contributes to more morbidity,
mortality, and public health costs than all illicit drugs combined. The
5th edition of the Diagnostic and Statistical Manual of Mental Disorders
(DSM-5) integrates alcohol abuse and alcohol dependence into a single
disorder called alcohol use disorder (AUD), with mild, moderate,
and severe subclassifications (American Psychiatric Association, 2013).
In the DSM-5, all types of substance abuse and dependence have been
combined into a single substance use disorder (SUD) on a continuum
from mild to severe. A diagnosis of AUD requires that at least two of
the 11 DSM-5 behaviors be present within a 12-month period (mild
AUD: 2–3 criteria; moderate AUD: 4–5 criteria; severe AUD: 6–11 criteria).
The four main behavioral effects of AUD are impaired control over
drinking, negative social consequences, risky use, and altered physiological
effects (tolerance, withdrawal). This chapter presents an overview
of the prevalence and harmful consequences of AUD in the U.S.,
the systemic nature of the disease, neurocircuitry and stages of AUD,
comorbidities, fetal alcohol spectrum disorders, genetic risk factors, and
pharmacotherapies for AUD.
Explore natural remedies for syphilis treatment in Singapore. Discover alternative therapies, herbal remedies, and lifestyle changes that may complement conventional treatments. Learn about holistic approaches to managing syphilis symptoms and supporting overall health.
Evaluation of antidepressant activity of clitoris ternatea in animals
Jc 9
1. IN VITRO EVALUATION OF THE HUMAN GINGIVAL
FIBROBLAST/ GINGIVAL MESENCHYMAL STEM CELL
DYNAMICS THROUGH PERFORATED GUIDED TISSUE
MEMBRANES: CELL MIGRATION, PROLIFERATION AND
MEMBRANE STIFFNESS ASSAY
PRESENTED BY
BIBINA GEORGE
GUIDED BY
DR. JAYASHREE A. MUDDA
Gamal et al.
J PERIODONT RES 2017
2. STEM CELLS
PRIMITIVE CELLS WITHVERY HIGH POTENTIAL AND INFINITE ABILITY OF SELF
RENEWAL AND DIFFERENTIATION INTO OTHER CELL TYPES.
4. BMP & ALP
BMPs
o TGF – β superfamily of proteins
o Growth & Differentiation factors
o Chemotactic agents
o (+) Angiogenesis & migration, prolif and
differentiation of MSC into cartilage &
bone forming cells
Rao SM et al, 2013.
ALP
o Physiological mineralization
o Locally ↑ inorganic phosphate levels
Anderson et al,1995.
o PDL & ECM cells
Groenvald et al, 1996.
o Acellular cementum formation
Beertsen & Van den Bos,1991
5. STUDIES TESTING REGENERATING POTENTIAL OF GINGIVAL
FIBROBLASTS
1. Buurma & Coworkers :Genes------------- Ging. Fibroblasts-------------BMP----------Hard Tissue
Formation
2. Tomar et al : GMSCs more advantageous than bone marrow derived MSCs ------ Cell therapy
& Regenerative medicine
3. Fawzy El-Sayed et al : Exp.Animals ---------- Autologous GMSCs-----------Pdl Defects---------
Bone, Cementum & Pdl formation.
Gingival tissue occlusion Concept tested by Wilkesjo et al
6. AIM
To test gingival fibroblasts and their associated GMSC locomotion and proliferation
through resorbable collagen membrane.
Perforated membrane stiffness was also evaluated to figure out the membrane
perforation diameter that could negatively affect membrane stiffness, which could
adversely affect the space keeping effect of the membranes.
Hypothesis
7. MATERIAL AND METHODS
Human gingival tissue sample collection --------3 adult donors(21,24 and 31 years)
GMSC culturing (2-3 days)
Dulbecco’s MEM
Subculturing (every other week)
Α- modified
Eagle’medium
Epithelial layer
removed
Culture medium replaced
every 2-3 d over 21 d
period
PHASE- CONTRAST MICROSCOPY
1.1. Surface markers testingSurface markers testing
2.2. GMSC Migration AssayGMSC Migration Assay
3.3. MTT Cell Proliferation AssayMTT Cell Proliferation Assay
4.4. SEM of Perforated MembraneSEM of Perforated Membrane
8. 1.1. Surface markers testingSurface markers testing
1st
adherent cell appeared at day 6
GMSC –plastic adherence to tissue
culture flasks
Flow cytometric analysis
2.2. GMSC Migration AssayGMSC Migration Assay
5. Tensile Strength & Modulus of
Elasticity : Mech testing of
membranes
12 mm diameter
Collagen coated PTFE Transwells
Cultured GMSC
Blood Clot
Grp I: 0.2 mm
Grp II:0.4 mm
Grp III:0.7 mm
48h
Crystal violet staining
Neubauer hemocytometer
Inverted microscope
3.3. MTT Cell Proliferation AssayMTT Cell Proliferation Assay
Based on reduction of terazolium
salts.
Lower cell chamber + MTT
Reagent -----purple ppt
+detergent----
Spectrophotometer-----Absorbance
16. DISCUSSION
Critical sized periodontal and alveolar bone defects usually suffer limited
regenerative capacity
o limited cellularity and
o lack of adequate space provision.
Occlusive membranes
17. Gamal and Iacono suggested the use of perforated barrier membranes for the
treatment of intrabony defects.
They claimed that, membrane perforations may allow for the participation of cells
derived from the gingiva (GMSC) and periosteum in the regenerative process
• The present study was conducted to prove feasibility of selective gingival fibroblasts and GMSC
migration through selected perforation diameters of collagen membranes.
• To achieve optimal outcomes of perforated GTR and bone regeneration membranes, it was important
to test the optimal pore diameter that allows for maximum cell migration through membrane
perforations without allowing for the passage of the rapidly growing gingival connective tissue.
• preventing pressure atrophy over the newly formed tissue in the defect area.
18. BLOOD CLOT FIBRIN
Matrix for cellular migration
Chemotactic potential through its content of growth factors
Stimulate the proliferation of wound fibroblasts and
provide signals for gene expression,
induce expression of appropriate integrin receptors on the fibroblasts, which are
essential for cellular migration
19. Irwin et al. who studied the morphologic characteristics of fibroblasts obtained
from papillary and reticular layers of human gingival tissue. They reported a much
smaller size of gingival fibroblasts than the selected pore diameters.
• SEM analysis suggests that more predictable outcomes could be achieved than
of the same group’s previous clinical findings by more adjustment of membrane
perforations to be totally occlusive for gingival connective tissue elements.
20. Gamal et al. reported higher gingival crevicular fluid levels of BMP-2, vascular
endothelial growth factor and platelet- derived growth factor-BB following
the use of perforated membranes as compared to an occlusive one .
As stated by Scantlebury, space provision and maintenance are essential design criteria
for membranes used in GTR. He reported that the contour and volume of new bone
formed in the defects is determined by the space created and protected by the barrier
membrane. Membrane stiffness prevents its collapse into the defect.
21. CONCLUSION
Macromembrane perforations of 0.2, 0.4 and 0.7 mm are suitable pore diameters that could maintain
membrane stiffness and allow for cellular migration.
However, these membrane perforation diameters do not allow for total gingival connective tissue
isolation.This could affect negatively the optimal outcomes of perforated membrane use.
More investigations are required to test smaller membrane diameters to reach the ideal perforation
diameter that could be totally occlusive for gingival connective tissue elements and permeable for
gingival fibroblasts with their associated mediators and GMSC populations.
A membrane perforation diameter that allows for selective GMSC migration needs also to be
investigated.
Editor's Notes
Gingival tissues have a characteristic and remarkable capacity of wound healing and rapid regeneration.
The main hypothesis is that gingival cell translocation could allow for the gingival fibroblasts/ GMSCs to be subjected to the ECM components of the periodontal ligament
and bony surfaces of the remaining periodontal structures, altering their behavior in response to periodontal ligament and bone mediators.
PCM : To ensure cell viability (daily followup)
Manually perforated with 2mm interperforation distance
Upper chamber cells removed with cotton swab
COUNT – KRUSKAL
PROLIF-ANOVA
The cells were positive for mesenchymal surface markers CD146 and CD29, and showed negative expression of hematopoietic cell surface marker CD34
One-way ANOVA showed no significant difference between studied groups for both tensile strength and modulus of elasticity.
SEM evaluation revealed uniform perforation diameters in each group in spite of their irregular inconsistent outlines. Aggregates of blood elements and variable numbers of
fibroblasts in fibrin matrices on all samples for all groups were observed.
All groups showed limited numbers of flat polyhedral cells with long cytoplasmic extensions attached to the membrane surfaces.
5A: These aggregates were found mainly on the peripheries of the perforations rather than on the membrane surface
5B: Some membranes showed a limited number of perforations with gingival fibroblasts and their associated Matrigel matrix protruding out into the lower compartment
Ltd CT capacity of selected pore diameters
Periodontal defects and deficient alveolar ridges that are usually overlaid by highly vascular and cellular gingival connective tissue or periosteum respectively are commonly treated by occlusive membranes. This could isolate these cell-deficient defects from a huge source of regenerative elements that could positively share in their reconstruction or regeneration.
These higher mediator values could be related to migrating cells through membrane perforations reported in the present study.