THE ENDOTHELIN-A RECEPTOR SUBTYPE TRANSDUCES THE EFFECTS OF THE ENDOTHELINS IN THE ANTERIOR-PITUITARY GLAND

被引：45

作者：

SAMSON, WK

机构：

[1] Department of Physiology, University of North Dakota School of Medicine, Grand Forks

来源：

BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS | 1992年 / 187卷 / 02期

关键词：

D O I：

10.1016/0006-291X(92)91235-I

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

All members of the mammalian endothelin family of peptides exert significant effects on prolactin and luteinizing hormone release from dispersed anterior pituitary cells in vitro. The rank order of potency for the prolactin inhibiting effects of the endothelins is ET-1=ET-2≪ET-3. This suggests an involvement of the ET-A receptor subtype. The selective ET-A receptor antagonist BQ-123 antagonized the effects of the ETs in a competitive fashion with pA2 values of 6.1 (ET-1), 5.7 (ET-2) and 6.4 (ET-3), when added simultaneously with the ETs. This suggests the involvement of the ET-A receptor subtype in the actions of the ETs within the anterior pituitary gland. © 1992.

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页码：590 / 595

页数：6

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