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ADRENOMEDULLIN AND CALCITONIN GENE-RELATED PEPTIDE INHIBIT ALDOSTERONE SECRETION IN RATS, ACTING VIA A COMMON RECEPTOR

机译:肾上腺素和降钙素基因相关肽通过共同受体抑制大鼠中醛固酮分泌

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摘要

Adrenomedullin (ADM) and calcitonin gene-related peptide (CGRP) did not affect either basal or ACTH-stimulated secretion of aldosterone and corticosterone by dispersed rat capsular and inner adrenocortical cells, respectively. However, both peptides strongly depressed angiotensin-II (ANG-II)-stimulated aldosterone production by capsular cells; the minimal effective concentration was 10(-7) M. The inhibitory effect of both ADM and CGRP was reversed by CGRP(8-37) a Specific CGRP(1) receptor antagonist; a complete reversal was obtained with a CGRP(8-37) Concentration of 10(-6) M. Our findings indicate that ADM and CGRP specifically interfere with the intracellular mechanisms transducing the secretagogue signal of ANG-II, and suggest that the ADM effect is mediated by CGRP receptors. [References: 27]
机译:肾上腺髓质素(ADM)和降钙素基因相关肽(CGRP)分别不影响散布的大鼠荚膜和肾上腺皮质皮质细胞的基础或促肾上腺皮质激素刺激的醛固酮和皮质酮的分泌。然而,这两种肽都强烈抑制了荚膜细胞对血管紧张素II(ANG-II)刺激的醛固酮的产生。最小有效浓度为10(-7)M。特异性CGRP(1)受体拮抗剂CGRP(8-37)逆转了ADM和CGRP的抑制作用。 CGRP(8-37)浓度为10(-6)M时可完全逆转。我们的发现表明ADM和CGRP特异性干扰转导ANG-II促分泌素信号的细胞内机制,并提示ADM作用由CGRP受体介导。 [参考:27]

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