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논문 기본 정보

자료유형
학술저널
저자정보
Oh, Ki-Wan (Department of Pharmacy, College of Pharmacy, Chungbuk National University) Yoon, In-Seup (Department of Pharmacy, College of Pharmacy, Chungbuk National University) Shin, Im-Chul (Department of Pharmacy, College of Pharmacy, Chungbuk National University) Hong, Jin-Tae (Department of Pharmacy, College of Pharmacy, Chungbuk National University) Lee, Myung-Koo (Department of Pharmacy, College of Pharmacy, Chungbuk National University)
저널정보
대한약학회 Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea 제25권 제2호
발행연도
2002.1
수록면
202 - 207 (6page)

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This study was performed to investigate the effect of tetrahydroisoxazolopyridine (THIP), a $GABA_A$ agonist, on the morphine-induced hyperactivity, reverse tolerance and postsynaptic dopamine receptor supersensitivity in mice. A single administration of morphine induced hyperactivity in mice. However, the morphine-induced hyperactivity was inhibited dose-dependently by the administration of THIP (0.2, 0.4 and 0.8 mg/kg, i.p.). In contrast, daily administration of morphine resulted in a reverse tolerance to the hyperactivity caused by morphine (10 mg/kg ,s.c.). THIP inhibited the development of reverse tolerance in the mice that had received the repeated same morphine (10 mg/kg s.c.) doses. The postsynaptic dopamine receptor supersensitivity, which was evidenced by the enhanced ambulatory activity its after the administration of apomorphine (2 mg/kg s.c.), also developed in the reverse tolerant mice. THIP also inhibited the development of the postsynaptic dopamine receptor supersensitivity indulged by the chronic morphine administration. These results suggest that the hyperactivity, reverse toterance and postsynaptic dopamine receptor supersensitivity induced by morphine can be inhibited activating the $GABA_A$ receptors.

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