The document summarizes a study that investigated the antidepressant effects of a standardized hydroethanolic extract of Asparagus adscendens in mice. Key findings include:
1) The extract showed antidepressant-like effects in behavioral tests like the forced swimming test and tail suspension test at doses of 50-100 mg/kg.
2) It normalized monoamine neurotransmitter levels and reduced oxidative stress markers in the brain.
3) The extract also reduced elevated corticosterone levels, suggesting it may help normalize hyperactivity of the hypothalamic-pituitary-adrenal axis, another pathogenic factor for depression.
Bioassay (commonly used shorthand for biological assay), or biological standardization is a type of scientific experiment. A bioassay involves the use of a live animal (in vivo) or tissue (in vitro) to determine the biological activity of a substance, such as a hormone or drug. Bioassays are typically conducted to measure the effects of a substance on a living organism and are essential in the development of new drugs and in monitoring environmental pollutants. Both are procedures by which the potency or the nature of a substance is estimated by studying its effects on living matter. A bioassay can also be used to determine the concentration of a particular constitution of a mixture.
Bioassay (commonly used shorthand for biological assay), or biological standardization is a type of scientific experiment. A bioassay involves the use of a live animal (in vivo) or tissue (in vitro) to determine the biological activity of a substance, such as a hormone or drug. Bioassays are typically conducted to measure the effects of a substance on a living organism and are essential in the development of new drugs and in monitoring environmental pollutants. Both are procedures by which the potency or the nature of a substance is estimated by studying its effects on living matter. A bioassay can also be used to determine the concentration of a particular constitution of a mixture.
Lecture includes definition of bioassay, Types of Assay and Bioassay , Indications, principles, advantages of bioassay. Example of a Bioassay with calculations. This lecture will be of help for postgraduate pharmacology students as well as undergraduates
Expt. 3 Introduction to principles of bioassay, its types including advantage...VISHALJADHAV100
Biological standardization (Bioassay)- Definition
Bioassays are employed- BUT WHEN???
Applications of bioassay methods
Principles of bioassay of drugs
Standard preparation (Reference Standard)
Types of bioassays-
1) Quantal response bioassay
2) Graded response bioassays
a) Matching bioassay
b) Interpolation bioassay
c) Bracketing bioassay
d) Multiple point bioassays
Three-point bioassay
Four-point bioassay
Six-point bioassay
Latin square designs- Multiple point bioassays
Intact animal studies
An Over view on Bioassay, structure & principles, types & methods of bioassay. Also mention of other assay's like biotechnology, microbio assay, immunoassay etc.
Expt. 5 Bioassay of oxytocin using rat uterine horn by interpolation methodVISHALJADHAV100
Objective
Principle
Requirements
Experimental specifications (conditions)
Preparation of oxytocin standard solution
Preparation of De Jalon solution (PSS)
Procedure
Kymograph recording of contractions
Observation table
Graphical presentation of DRC
Calculation
Result and interpretation
Lecture includes definition of bioassay, Types of Assay and Bioassay , Indications, principles, advantages of bioassay. Example of a Bioassay with calculations. This lecture will be of help for postgraduate pharmacology students as well as undergraduates
Expt. 3 Introduction to principles of bioassay, its types including advantage...VISHALJADHAV100
Biological standardization (Bioassay)- Definition
Bioassays are employed- BUT WHEN???
Applications of bioassay methods
Principles of bioassay of drugs
Standard preparation (Reference Standard)
Types of bioassays-
1) Quantal response bioassay
2) Graded response bioassays
a) Matching bioassay
b) Interpolation bioassay
c) Bracketing bioassay
d) Multiple point bioassays
Three-point bioassay
Four-point bioassay
Six-point bioassay
Latin square designs- Multiple point bioassays
Intact animal studies
An Over view on Bioassay, structure & principles, types & methods of bioassay. Also mention of other assay's like biotechnology, microbio assay, immunoassay etc.
Expt. 5 Bioassay of oxytocin using rat uterine horn by interpolation methodVISHALJADHAV100
Objective
Principle
Requirements
Experimental specifications (conditions)
Preparation of oxytocin standard solution
Preparation of De Jalon solution (PSS)
Procedure
Kymograph recording of contractions
Observation table
Graphical presentation of DRC
Calculation
Result and interpretation
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He discussed the concept of quality improvement, emphasizing its applicability to various aspects of life, including personal, project, and program improvements. He defined quality as doing the right thing at the right time in the right way to achieve the best possible results and discussed the concept of the "gap" between what we know and what we do, and how this gap represents the areas we need to improve. He explained the scientific approach to quality improvement, which involves systematic performance analysis, testing and learning, and implementing change ideas. He also highlighted the importance of client focus and a team approach to quality improvement.
Instructions for Submissions thorugh G- Classroom.pptxJheel Barad
This presentation provides a briefing on how to upload submissions and documents in Google Classroom. It was prepared as part of an orientation for new Sainik School in-service teacher trainees. As a training officer, my goal is to ensure that you are comfortable and proficient with this essential tool for managing assignments and fostering student engagement.
The Indian economy is classified into different sectors to simplify the analysis and understanding of economic activities. For Class 10, it's essential to grasp the sectors of the Indian economy, understand their characteristics, and recognize their importance. This guide will provide detailed notes on the Sectors of the Indian Economy Class 10, using specific long-tail keywords to enhance comprehension.
For more information, visit-www.vavaclasses.com
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
For more information, visit-www.vavaclasses.com
6. Introduction
• Depression is a chronic, recurrent psychiatric disorder (21%)
• WHO ----4th leading cause of disability by 2020.
• Monoaminergic theory - 5-hydroxytyrptamine (5-HT), norepinephrine (NE), and
dopamine (DA).
• Monotherapy – resistance
7. Cont…..
• TCA–SSRI combination.
• Necessity to develop the newer antidepressant drugs with more safety and
efficacy.
• Asparagus adscendens Roxb. (Liliaceae)
( safed musali or dholi musali)
8. Cont…..
• Aphrodisiac and brain tonic.
• Roots -ant filarial, antidiabetic, antistress, chemo modulatory, aphrodisiac, antifungal, and
antioxidant activities.
• Vitamin C, xanthophylls, Vitamin E, β-carotene, and Shatavarin IV
• Palmitic acid, stearic acid, asparanin C, asparanin D
• Geriforte-----neurological disorder
9. Cont…..
• current study -antidepressant effect of root extract of A. adscendens and
its possible mechanisms
10. Materials and Methods
• Swiss Albino mice of either sex weighing 20–30 g
(3–4 months of age)
• The animals were housed on a 12-h light/dark cycle
• Temperature (22°C ± 2°C)
• Humidity (50 ± 10%).
11. Plant collection and preparation of extract
• “Council of Scientific and Industrial Research -Institute of Himalayan
Bioresource Technology”
• Roots ---- washed with water, shade-dried, and ground to a moderately
coarse powder
extraction
• Percolation method with ethanol: water (50:50 v/v) at room temperature
12. Cont…..
• Extract was evaporated to dryness using a rotary evaporator
Lyophilization
Stored at 4ºC for further use
• The percentage yield of the extract was found to be 44.7% w/w.
13. Phytochemical analysis and standardization of the plant
extract using high-performance-thin-layer chromatography
• Alkaloids, carbohydrates, glycosides, saponins, steroids, triterpenoids,
flavonoids, tannins, proteins, and amino acids
• Shatavarin IV ----biomarker for the standardization of the hydroethanolic
extract
HPTLC
14. Cont…………
• Presence of shatavarin IV was confirmed by TLC using ethyl acetate:
methanol: water (7.5:1.5:0.5, v/v/v) as a mobile phase
• A stock solution of hydroethanolic extract (30 mg/mL) and Shatavarin IV
(1 mg/mL) was prepared in methanol chromatogram
426 nm
15. Methodology
• Six groups of animals (n = 6)
• Group I: naive
• Group II: saline (10 mL/kg/day, i.p.)
• Group III: imipramine (15 mg/kg/day, i.p.) 14 days
• Groups IV, V, and VI: AAE
(25, 50, and 100 mg/kg/day, i.p., respectively)
17. Acute toxicity test of the extract
• 25, 50, and 100 mg/kg; i.p
• Percentage mortality and gross behavioral changes were observed during 24
h after treatment
18. Behavioral assessments
1. Forced swimming test
25 cm in height, 14 cm in diameter
Filled with 20-cm high water (25°C ± 2°C)
Duration of immobility was observed for 6 min
19. Cont……
2. Tail suspension test
Mice were individually suspended by tail (6 min)
Immobile
( when they hung passively and completely motionless.)
20. Cont……
3. Open‐field test
locomotor and exploratory behaviors
40 cm × 40 cm × 30 cm
25 equal squares (8 cm × 8 cm)
- crossings, rearing……….5 Minutes..
21. Estimation of monoamines using high‐performance
liquid chromatography with electrochemical
detection
High-performance liquid chromatography with electrochemical detection
Brain samples - homogenized in an ice-cold solution of 0.1 M
perchloric acid Centrifuged at 14,500 g for 30 min at 4°C.
The clear supernatants were filtered through a 0.45-μm pore membrane.
22. Cont……
The separation was done in an isocratic elution mode at a column
temperature of 35°C using mobile phase
( 0.15 M sodium dihydrogen phosphate, 2.28 mM heptane sulphonic acid,
and 1 mM ethylenediaminetetraacetic acid (pH 5.4), containing 10% methanol
at a flow rate of 0.9 mL/min.)
monoamine neurotransmitters - in ng/g wet weight tissue.
23. Cont…….
• The order of elution
• Norepineprine (6.481 min)
• DA (15.437 min)
• 5-HT (38.144 min)
24. Biochemical estimation
• Brain samples were homogenized in an ice-cold 10% w/v (0.05 M, pH 7.4)
phosphate buffer centrifuged at 6000 g for 20 min at 4°C.
• Clear supernatant
• Thiobarbituric acid-reactive substances (TBARS)
• Reduced glutathione (GSH)
• Catalase (CAT)
• Total nitrite levels
25. Estimation of thiobarbituric acid‐reactive
substance
• An index of lipid peroxidation
• Method described by Oakes and Van der Kraak
• The absorbance was measured at 532 nm
microplate reader(BIORAD)
• TBARS value was expressed as nanomoles/mg of protein
26. Estimation of reduced glutathione
• Reduced GSH Absorbance at 412 nm.
Microplate reader(BIORAD)
• Values were expressed as micromoles per gram of wet tissue.
27. Estimation of catalase
• CAT activity -----The modified method of Chance and Maehly
• Calculated by using the molar extinction coefficient of H2O2 (0.071
mM/cm)
• Expressed as micromoles of H2O2 oxidized per minute per milligram
protein.
28. Estimation of total nitrite level
• Absorbance –(at 540 nm)
• (BIORAD-Microplate Reader, Logotech, ISE Group, Germany)
• Standard curve was plotted using 10–100 mM of sodium nitrite.
• All the values were expressed as ng/g of wet tissue
29. Serum corticosterone measurement
• Spectrofluorometer
• The standard curve was plotted using 10–100 ng of corticosterone
• All the values were expressed as ng/mL
32. Phytochemical analysis and standardization of the
plant extract using high‐performance‐thin‐layer
chromatography
• Alkaloids, carbohydrates, glycosides, saponins, steroids, triterpenoids, flavonoids,
tannins, proteins, and amino acids.
• HPTLC analysis----Shatavarin IV
• The spots of the entire chromatogram were visualized at 426 nm
• Shatavarin IV - 9.4 mg/kg of the hydroethanolic extract
33.
34. Acute toxicity studies
• No mortality
• No neurotoxic effects with respect to disturbances in motor coordination up
to the highest dose (i.e., 100 mg/kg).
35. Effect of Asparagus adscendens extract on forced
swimming test
• One-way ANOVA---There were significant differences between the treatment
groups
• Student–Newman–Keuls test-----AAE (25, 50, and 100 mg/kg) significantly
decreased the duration of immobility time as compared to vehicle control group
• Increased the swimming time at 50 and 100 mg/kg as compared to vehicle control
group
36.
37.
38.
39. Effect of Asparagus adscendens extract on tail
suspension test
• Student–Newman–Keuls test
• Significant decrease in the immobility time attenuated by the administration
of AAE at 50 and 100 mg/kg
• Imipramine also decreased the immobility time after administration of 15
mg/kg dose
40.
41. Effect of Asparagus adscendens extract on
open-field test
• No significant effect -----number of crossing and rearing
42. Effect of Asparagus adscendens extract on
monoamine neurotransmitters levels in cortical
and hippocampal areas of mouse brain
• Changes in norepinephrine levels
• Student–Newman–Keuls test indicated a significant decrease in the cortical
and hippocampal NE levels of vehicle control as compared to naive group
43.
44.
45. Changes in dopamine levels
• significant increase cortical and hippocampal DA levels
( AAE-treated groups as compared to vehicle control)
• no significant change in DA level
(imipramine-treated group as compared to vehicle control group)
46.
47. Changes in serotonin levels
• No significant change was observed in hippocampal serotonin level in
between the groups
• A significant increase
( cortical serotonin level of AAE-treated groups as compared to vehicle control
group)
48.
49. Effect of Asparagus adscendens extract on
lipid peroxidation,
reduced glutathione, catalase, and total nitrite
levels in
cortical and hippocampal areas of mouse brain
52. Discussion
• Current study demonstrate the significant antidepressant-like effect of
AAE as observed in the behavioral tests on mice
• TST and FST---widely accepted behavioral tools
• AAE reduced the duration of immobility in the FST and TST.
• Peak effect observed at 100 mg/kg in both the models.
53. Cont…..
• None of the test doses affected the locomotor activity
• Major Neurochemical Process In Depression
• impairment of monoamine neurotransmitter levels
• hyperactivity of hypothalamic–pituitary–adrenal (HPA) axis
• oxidative damage by inducing an imbalance between the in vivo pro-oxidant
and antioxidant status
54. Cont…..
• human studies HPA dysfunction elevated corticosterone levels
• Studies free radical generation increased during depression
• Bacopa monniera Wettst, Withania somnifera
• AAE significantly increased the activity of CAT and reduced GSH levels in both
cortex and hippocampus
55. Cont…..
• It also showed significant reduction in the level of lipid peroxidation marker and
total nitrite levels in both cortex and hippocampus
• Hyperactivation of HPA axis is another additional pathogenic factor for depression
increase in corticosterone levels
• AAE downregulation of corticosterone normalizing the HPA
hyperactivity