Steroidogenic and pressor activity of angiotensin analogues in the rat.

P A Khairallah, M C Khosla, F M Bumpus, J F Tait, S A Tait
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引用次数: 8

Abstract

1. A classical 6 point assay in vitro for measuring aldosterone stimulating activity has been developed. 2. The steroidogenic potency of Ile5-angiotensin II was 62% of that given by Val5-angiotensin II. Ile5-angiotensin III (Des-Asp1-Ile5-angiotensin II) was likewise 50% as active as Val5-angiotensin III (Des-Asp1-Val5-angiotensin II). Similar results were obtained in the pressor and myotropic assays. 3. Ile5-angiotensin III and Val5-angiotensin III had only 7% and 16% respectively of the steroidogenic activity of Val5-angiotensin II. 4. Sar1-Ile5-angiotensin II was 2.3 times as potent as Val5-angiotensin II in aldosterone-stimulating activity. The corresponding activities of Me2-Gly1-angiotensin II, Pro1-angiotensin II and Pro31-angiotensin II were 71%, 15% and 3% of Val5-angiotensin II respectively.

血管紧张素类似物在大鼠体内的类固醇生成和升压活性。
1. 建立了一种经典的体外6点法测定醛固酮刺激活性。2. ile5 -血管紧张素II的类固醇生成效力是val5 -血管紧张素II的62%。同样,ile5 -血管紧张素III (des - asp1 - ile5 -血管紧张素II)的活性是val5 -血管紧张素III (des - asp1 - val5 -血管紧张素II)的50%。在加压和促肌试验中也得到了类似的结果。3.ile5 -血管紧张素III和val5 -血管紧张素III的类固醇生成活性分别只有val5 -血管紧张素II的7%和16%。4. sar1 - ile5 -血管紧张素II的醛固酮刺激活性是val5 -血管紧张素II的2.3倍。Me2-Gly1-angiotensin II、Pro1-angiotensin II和Pro31-angiotensin II的活性分别为Val5-angiotensin II的71%、15%和3%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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