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Автор Hatcher, J.P.
Автор Boyland, P.
Автор Hagan, J.J.
Дата выпуска 1995
dc.description The effects of the 5-HT<sub> 3</sub> receptor antagonists, granisetron and ondansetron, were investigated on behaviour maintained by intracranial self-stimulation (ICSS). Rats, implanted with bipolar electrodes in the lateral hypothalamus, were trained to lever press on a continuous reinforcement schedule for positively reinforcing trains of electrical stimulation. The frequency at which responding reached 50% of maximum (M50) and the maximum rate of responding (asymptote) were used to measure drug effects. Granisetron (0.01-0.1 mg/kg i.p ) and ondansetron (0.03-0.3 mg/kg i.p ) had no effect on either parameter. In contrast, cocaine (20 mg/kg i.p ) potentiated rewarded responding, reducing M50 values, but neither granisetron (0.01-3.0 mg/kg i.p ) nor ondansetron (0.03-0.3 mg/kg i.p ) blocked this effect. Neither did granisetron (0.1-10.0 mg/kg i.p ) alter the effect of lower doses of cocaine (10 mg/kg i.p.). These data suggest that 5 -HT<sub> 3</sub> receptors do not play a significant role in mediating responding maintained by ICSS in the rat through hypothalamic electrodes. Neither do they modulate cocaine-induced potentiation of the behaviour.
Издатель Sage Publications
Тема intra-cranial self-stimulation
Тема granisetron
Тема ondansetron
Тема cocaine
Тема lateral hypothalamus
Тема rat
Тема reward; reinforcement
Название The 5 -HT3 receptor antagonists, granisetron and ondansetron, do not affect cocaine-induced shifts in intra-cranial self-stimulation thresholds
Тип Journal Article
DOI 10.1177/026988119500900409
Print ISSN 0269-8811
Журнал Journal of Psychopharmacology
Том 9
Первая страница 342
Последняя страница 347
Аффилиация Hatcher, J.P., Psychiatry Research Department, SmithKline Beecham Pharmaceuticals, New Frontiers Science Park, Third Avenue, Harlow, Essex CM19 5AW, UK
Аффилиация Boyland, P., Psychiatry Research Department, SmithKline Beecham Pharmaceuticals, New Frontiers Science Park, Third Avenue, Harlow, Essex CM19 5AW, UK
Аффилиация Hagan, J.J., Psychiatry Research Department, SmithKline Beecham Pharmaceuticals, New Frontiers Science Park, Third Avenue, Harlow, Essex CM19 5AW, UK
Выпуск 4
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