SPECIFIC AFFINITY LABELING OF MU-OPIOID RECEPTORS IN RAT-BRAIN BY S-ACTIVATED SULFHYDRYLDIHYDROMORPHINE ANALOGS

被引:8
|
作者
SAGARA, T
OKAMURA, M
SHIMOHIGASHI, Y
OHNO, M
KANEMATSU, K
机构
[1] KYUSHU UNIV 62,FAC PHARMACEUT SCI,INST SYNTHET ORGAN CHEM,HIGASHI KU,FUKUOKA 81282,JAPAN
[2] KYUSHU UNIV 33,FAC SCI,DEPT CHEM,BIOCHEM LAB,HIGASHI KU,FUKUOKA 81282,JAPAN
关键词
D O I
10.1016/0960-894X(95)00263-S
中图分类号
R914 [药物化学];
学科分类号
100701 ;
摘要
S-Activated sulfhydryldihydromorphine analogs 1 and 2 were synthesized. In the rat brain receptor binding assays, both 1 and 2 exhibited considerably high affinities for mu opioid receptors (IC50; 1 = 31.1 nM, 2 = 10.7 nM). However, when each analog was incubated with membranes for the purpose of getting disulfide bridgings, 1 (EC(50) = 58 nM) was found to affinity-label the mu receptors about 30 times more effectively than 2 (EC(50) = 1700 nM).
引用
收藏
页码:1609 / 1614
页数:6
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