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ORIGINAL ARTICLE
Year : 2016  |  Volume : 144  |  Issue : 4  |  Page : 614-621

Antidepressant & anxiolytic activities of N-(pyridin-3-yl) quinoxalin-2-carboxamide: A novel serotonin type 3 receptor antagonist in behavioural animal models


1 Pharmacology Department, Novel Drug Discovery and Development (NDDD), Lupin Research Park, Pune, India
2 Department of Pharmaceutical Chemistry, KVSR Siddhartha College of Pharmaceutical Sciences, Vijayawada, India
3 Department of Pharmacy, Birla Institute of Technology & Science, Pilani, India

Correspondence Address:
Dilip Kumar Pandey
Pharmacology Department, Novel Drug, Discovery and Development, Lupin Research Park, Pune 412 115, Maharashtra
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0971-5916.200893

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Background & objectives: Alteration in the serotonin leads to the psychological illness, such as depression, anxiety, schizophrenia, eating disorders, obsessive-compulsive disorder, panic disorders and migraines. The objective of the current study was to investigate the antidepressant and anxiolytic activities of N-(pyridin-3-yl) quinoxalin-2-carboxamide (QCF-21), a novel 5-HT3receptor antagonist in preclinical models of depression and anxiety. Methods: Antidepressant activity was evaluated in preliminary tests such as forced swim and tail suspension tests (FST & TST). Anti-anxiety effect of QCF-21 was investigated by employing elevated plus maze (EPM), light/dark and hole board tests. Olfactory bulbectomy (OBX) in rats was used as chronic model of depression. Mechanistic test of QCF-21 was evaluated by reserpine-induced hypothermia and 5-hydroxytryptophan (5-HTP)-induced head-twitch response. Results: The dose-response study revealed an initial antidepressant-like effect of QCF-21(0.25-1 mg/kg, i.p.) in the FST and TST and anxiolytic-like effect in EPM, light and dark and hole board tests. QCF-21 potentiated the 5-HTP-induced head-twitches response in mice and reversed reserpine-induced hypothermia in rats. QCF-21 significantly reversed the behavioural anomalies post-OBX in rats. Interpretation & conclusions: The present findings indicate the potential antidepressant-like and anxiolytic-like effects of QCF-21 at low doses in rodent behavioural models of depression and anxiety. Further studies need to be done to understand the underlying mechanism.


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