cGMP‐dependent protein kinase II and aldosterone secretion

cGMP‐dependent protein kinase II and aldosterone secretion
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cGMPâ依赖性蛋白激酶âII和醛固酮分泌

DOI:
10.1111/j.1742-4658.2008.06839.x
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发表时间:
2009
期刊:
The FEBS Journal
影响因子:
--
通讯作者:
Hofmann F.
Hofmann F.
中科院分区:
--
文献类型:
--
作者:
Spießberger B;Bernhard D;Herrmann S;Feil S;Werner C;LuppaPB;Hofmann F.

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ACTH刺激的醛固酮分泌可被心房利钠肽/cGMP抑制。据报道,这种调节背后的机制涉及cGMP依赖性磷酸二酯酶2 (PDE2)的激活和cAMP的水解。最近有报道称,cGMP依赖性蛋白激酶II (cGKII)的激活可刺激大鼠肾小球带细胞的醛固酮分泌。小鼠肾上腺皮质的肾小球带表达cGKII和PDE2。我们使用cGKII基因纯合子失活的小鼠,在体内研究该激酶在醛固酮分泌中的潜在作用。野生型和cGKII - / -小鼠的基础血浆肾素和醛固酮水平相似。在野生型小鼠体内注射心房利钠肽可减少ACTH刺激的醛固酮分泌,但对cGKII缺失小鼠无影响。这些结果支持了cGKII调节小鼠肾上腺皮质醛固酮分泌的观点。
ACTH‐stimulated aldosterone secretion can be inhibited by atrio‐natriuretic peptide/cGMP. The mechanism behind this modulation has been reported to involve cGMP‐dependent activation of phosphodiesterase 2 (PDE2) and hydrolysis of cAMP. Recently it was reported that activation of cGMP‐dependent protein kinase II (cGKII) stimulated aldosterone secretion in rat zona glomerulosa cells. The zona glomerulosa of the murine adrenal cortex expresses cGKII and PDE2. We used mice with a homozygous inactivation of the cGKII gene to investigatein vivothe potential role of this kinase in aldosterone secretion. Basal plasma renin and aldosterone levels were similar in wild‐type and cGKII−/−mice.In vivoinjection of atrio‐natriuretic peptide decreased ACTH‐stimulated aldosterone secretion in wild‐type mice, but had no effect in cGKII‐deficient mice. These results support the view that cGKII modulates aldosterone secretion in the murine adrenal cortex.
高浓度的 cGMP 刺激的磷酸二酯酶介导 ANP 诱导的肾上腺肾小球细胞中 cAMP 和类固醇生成的减少。
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