Onosma bracteatum wall: A Potent analgesic agent
Keywords:bracteatum, Tail flick test, Acetic acid induced writhing test, albino rats and mice
Background: This study was aimed to find out the central and peripheral analgesic activity of hydro methanolic extract of aerial parts of Onosma bracteatum.
Material and methods: The central and peripheral analgesic activity is evaluated by tail flick test and acetic acid induced writhing test at the doses of 50, 100, 250 and 500mg/kg body weight respectively in animal models.
Results: The results obtained from Tail flick test revealed that O. bracteatum possesses potent analgesic effects by inducing significant increase in latency period in dose dependent manner at all doses at 1, 2 and 3 hours post feeding respectively. The maximum effect was observed at a dose of 500mg/kg i.e. 258.9% (p<0.05) at 3hrs post feeding. Diclofenac sodium (5mg/kg body weight) run as standard also increased the latency period continuously and highest activity was noted at 3hr i.e. 284.5% (p<0.05). Acetic acid induced writhing test also showed significant activity in a similar manner by O. bracteatum i.e 54% (p<0.05) at 500mg/kg while standard drug Diclofenic sodium (5mg/kg body weight) showed 45.9% (p<0.05) activity.
Conclusion: It is concluded that O. bracteatum possesses significant central and peripheral analgesic activity in animal model.
Bangladesh Journal of Medical Science Vol.17(1) 2018 p.36-41
How to Cite
Authors who publish in the Bangladesh Journal of Medical Science agree to the following terms that:
- Authors retain copyright and grant Bangladesh Journal of Medical Science the right of first publication of the work.
Articles in Bangladesh Journal of Medical Science are licensed under a Creative Commons Attribution 4.0 International License CC BY-4.0.This license permits use, distribution and reproduction in any medium, provided the original work is properly cited.
- Authors are able to enter into separate, additional contractual arrangements for the distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted to post their work online (e.g., in institutional repositories or on their website) as it can lead to productive exchanges, as well as greater citation of published work.