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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Kumar, Dinesh Bhat, Zulfiqar Ali |
| Description | Author Affiliation: Kumar D ( Department of Pharmaceutical Sciences, Tshwane University of Technology, Arcadia, Pretoria 0001, South Africa); Bhat ZA ( Department of Pharmaceutical Sciences, University of Kashmir, Srinagar 190006, India. Electronic address: zabhat2000@gmail.com.) |
| Abstract | BACKGROUND: Stachys tibetica Vatke (Himalayan or mountain tea) grows abundantly in the tropical and subtropical locations of the world including India, Tibet and China. The traditional healers of Kargil and adjoining areas in Ladakh, Jammu and Kashmir in India use the drug to treat fever, cough, phobias and various mental disorders etc. in the form of a decoction or as a tea. Flavonoids are important components in most herbal teas and play an important role in the management of various brain disorders via mimicking the action of benzodiazepines or through benzodiazepine receptors. AIM OF THE STUDY: The present study aimed to isolate flavonoids from S. tibetica and to evaluate their anxiolytic potential in comparison to reference synthetic (diazepam) and natural (apigenin) molecules. MATERIALS AND METHODS: S. tibetica root powder was extracted with 95% methanol for about 72 h using a soxhlet apparatus and the resultant extract was subjected to isolation procedures, resulting in the isolation of apigenin 7-glucoside and characterisation by various physical and spectrometric analyses. Apigenin 7-glucoside was evaluated for anxiolytic activity in rats in comparison with the reference compounds diazepam and apigenin using the elevated plus maze (EPM) model. RESULTS: Phytochemical investigations of S. tibetica revealed the presence of tannins, phenolics, flavonoids, saponins, glycosides and carbohydrates. A flavonoid glucoside, apigenin 7-glucoside was isolated for the first time from the roots of S. tibetica Vatke. The percentage of time spent and arm entries in the open arms was increased while the arms entries and duration of time spent in closed arms were decreased in the groups treated with apigenin 7-glucoside (which dose). In a similar fashion, diazepam and apigenin also exhibited anxiolytic activity (*p<0.05, **p<0.01). Apigenin 7-glucoside significantly decreased the percentage of head dips in EPM. Apigenin 7-glucoside showed anxiolytic potential comparable to the reference drugs apigenin and diazepam. CONCLUSION: Apigenin 7-glucoside could be an important molecule for the treatment of anxiety and further studies are required to elucidate its possible mechanism of action. |
| File Format | HTM / HTML |
| ISSN | 09447113 |
| Issue Number | 7 |
| Volume Number | 21 |
| e-ISSN | 1618095X |
| Journal | Phytomedicine |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2014-06-15 |
| Publisher Place | Germany |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Complementary Therapies Anti-anxiety Agents Chemistry Pharmacology Apigenin Stachys Animals Isolation & Purification Behavior, Animal Drug Effects Diazepam Drug Evaluation, Preclinical Methods Female Flavonoids Male Maze Learning Plant Roots Plants, Medicinal Rats, Wistar Toxicity Tests, Acute Journal Article Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Drug Discovery Molecular Medicine Pharmacology Complementary and Alternative Medicine Pharmaceutical Science |
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