Ritanserin, a 5HT2/1C Receptor Antagonist, Does Not Block Cocaine- Induced Behavioral Alterations and zif268 mRNA Expression in the Striatum of the Rats

• 영문명: Ritanserin, a 5HT2/1C Receptor Antagonist, Does Not Block Cocaine- Induced Behavioral Alterations and zif268 mRNA Expression in the Striatum of the Rats
• 발행기관: 대한생리학회-대한약리학회
• 저자명: Eun Sang Choe Jong Yeon Kim
• 간행물 정보: 『The Korean Journal of Physiology & Pharmacology』제4권 제5호, 355~359쪽, 전체 5쪽
• 주제분류: 의약학 > 의학일반
• 파일형태: PDF
• 발행일자: 2000.01.01

영문 초록

Cocaine induces immediate early gene expression and behavioral changes by blocking dopamine transporters in the terminals of nigrostriatal neurons in the striatum. The pharmacological role of serotonin 2/1C (5HT2/1C) receptors in cocaine-induced expression of zif268 (NGFI-A, egr1 and Krox-24) mRNA, a member of the zinc finger, was investigated using quantitative in situ hybridization histochemistry in vivo. Behavioral alterations induced by cocaine were also monitored in relation with blockade of the receptors. Systemic injection of ritanserin (1 mg/kg, s.c.), a 5HT2/1C receptor antagonist, did not reverse behavioral alterations and zif268 mRNA gene expression induced by 15 mg/kg cocaine, i.p., in the dorsal and ventral striatum. These data indicate that ritanserin-sensitive 5HT2/1C receptors are not necessary for cocaine-induced behavioral alterations and zif268 mRNA gene expression in the striatum.

키워드

Cocaine Ritanserin 5HT2/1C receptors In situ hybridization zif268 mRNA Behavioral alterations Striatum