Circadian rhythm of apomorphine-induced stereotypy in rats |
| |
Affiliation: | Department of Pharmacology, Ehime University, School of Medicine, Shigenobu-Cho Onsen-Gun, Ehime-Ken, 791-02 Japan |
| |
Abstract: | The existence of circadian variations of apomorphine-induced stereotypy was determined. Male Wistar rats, standardized to a light-dark cycle (lights on from 7:00–19:00) for three weeks, were injected with apomorphine hydrochloride (1 mg/kg or 3 mg/kg) at one of six times (9:00, 13:00, 17:00, 21:00, 1:00 and 5:00). A significant time-of-day effect was found for apomorphine-induced stereotypy, with highest stereotypic score following injection at 13::00 or 17:00. The circadian rhythm of apomorphine-induced stereotypy was significantly fitted to a single cosine curve with a 24-hr cycle using the least squares method. |
| |
Keywords: | Apomorphine Stereotype Circadian rhythm Chronopharmacology |
本文献已被 ScienceDirect 等数据库收录! |
|