オバタ　ヒデアキ   OBATA Hideaki   小幡　英章    所属   埼玉医科大学  医学部 総合医療センター　麻酔科（麻酔科、産科麻酔科）    職種   教授
論文種別	学術雑誌(原著)
言語種別	英語
査読の有無	査読あり
表題	Effects of 5-HT(2) and 5-HT(3) receptors on the modulation of nociceptive transmission in rat spinal cord according to the formalin test
掲載誌名	正式名：EUROPEAN JOURNAL OF PHARMACOLOGY ISSNコード：00142999
出版社	ELSEVIER SCIENCE BV
巻・号・頁	424(1),45-52頁
著者・共著者	M Sasaki,K Ishizaki,H Obata,F Goto
発行年月	2001/07
概要	We used the formalin test to clarify the 5-hydroxytryptamine (5-HT) receptor subtypes involved in the modulation of spinal nociceptive transmission in rats. Intrathecal administration of a 5-HT(1A) receptor agonist, 8-hydroxy-2-(di-n-propylamino)-tetraline (8-OH-DPAT; 1. 10, and 30 mug), or a 5-HT(1B) receptor agonist, 1. 4-dihydro-3-(1, 2,3, 6-tetrahydro-4-pyridinyl)-5H-pyrrol (3, 2-b) pyridin-5-one (CP 93129; 1 and 10 mug), produced no significant change in the number of flinches. A 5-HT, receptor agonist, (+/-)-2, 5-dimethoxy-4-iodoamphetamine (DOI; 10, 30, and 100 mug), and a 5-HT, receptor agonist, 2-methyl-5-HT (100 and 300 pg), produced dose-dependent decreases in the number of flinches in phases 1 (1 to 6 thin) and 2 (10 to 61 min) of the test. The antinociceptive effects of DOI and 2-methyl-5-HT were antagonized by intrathecal pretreatment with a 5-HT, receptor antagonist, ketanserin, and a 5-HT(3) receptor antagonist, 3-tropanyl-3, 5-dichlorobenzoate (MDL-72222), respectively. These results suggest that 5-HT, and 5-HT, receptors in the spinal cord mediate antinociception to chemical stimuli. (C) 2001 Published by Elsevier Science B.V.
PMID	11470259