KAPPA-OPIOID AGONIST INHIBITS PHOSPHOLIPASE-C, POSSIBLY VIA AN INHIBITION OF G-PROTEIN ACTIVITY

被引:29
作者
MISAWA, H [1 ]
UEDA, H [1 ]
SATOH, M [1 ]
机构
[1] KYOTO UNIV,FAC PHARMACEUT SCI,DEPT PHARMACOL,SAKYO KU,KYOTO 606,JAPAN
关键词
GTP-binding protein; Phospholipase C; κ-Opioid receptor;
D O I
10.1016/0304-3940(90)90224-W
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
In synaptic membranes of guinea pig cerebellum, in which preparations U-50, 488H, a κ-opioid agonist inhibits G-protein activity, the same κ-agonist at 100 nM inhibited the phospholipase C (PLC) activity stimulated by 100 μM GTP in the presence of 10 μM Ca2+. The present study provides a unique hypothetical mechanism that the receptor-mediated inhibition of PLC is mediated by inhibition of G-protein activity. © 1990.
引用
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页码:324 / 327
页数:4
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