Heart-Microcirculation Connection
Heart-Microcirculation Connection
复制标题
心脏-微循环连接
DOI:
10.1161/hypertensionaha.120.15772
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发表时间:
--
期刊:
影响因子:
8.3
通讯作者:
Kuhn M
中科院分区:
文献类型:
--
作者:
Špiranec Spes K;Chen W;Krebes L;Völker K;Abeßer M;Eder Negrin P;Cellini A;Nickel A;Nikolaev VO;Hofmann F;Schuh K;Schweda F;Kuhn M
Cardiac ANP (atrial natriuretic peptide) moderates arterial blood pressure. The mechanisms mediating its hypotensive effects are complex and involve inhibition of the renin-angiotensin-aldosterone system, increased natriuresis, endothelial permeability, and vasodilatation. The contribution of the direct vasodilating effects of ANP to blood pressure homeostasis is controversial because variable levels of the ANP receptor, GC-A (guanylyl cyclase-A), are expressed among vascular beds. Here, we show that ANP stimulates GC-A/cyclic GMP signaling in cultured microvascular pericytes and thereby the phosphorylation of the regulatory subunit of myosin phosphatase 1 by cGMP-dependent protein kinase I. Moreover, ANP prevents the calcium and contractile responses of pericytes to endothelin-1 as well as microvascular constrictions. In mice with conditional inactivation (knock-out) of GC-A in microcirculatory pericytes, such vasodilating effects of ANP on precapillary arterioles and capillaries were fully abolished. Concordantly, these mice have increased blood pressure despite preserved renal excretory function. Furthermore, acute intravascular volume expansion, which caused release of cardiac ANP, did not affect blood pressure of control mice but provoked hypertensive reactions in pericyte GC-A knock-out littermates. We conclude that GC-A/cGMP–dependent modulation of pericytes and microcirculatory tone contributes to the acute and chronic moderation of arterial blood pressure by ANP.Graphic AbstractA graphic abstract is available for this article.
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影响因子:
37.8
作者:
Spiranec, Katarina;Chen, Wen;Kuhn, Michaela
通讯作者:
Kuhn, Michaela
DOI:
--
发表时间:
2003
期刊:
American Journal of Physiology. Regulatory Integrative and Comparative Physiology
影响因子:
--
作者:
P. Andrew;S. Kaufman
通讯作者:
S. Kaufman
影响因子:
14.8
作者:
Mishra, Anusha;O'Farrell, Fergus M.;Attwell, David
通讯作者:
Attwell, David
影响因子:
--
作者:
R. Woods;J. Smolich
通讯作者:
J. Smolich
DOI:
--
发表时间:
2015
期刊:
AJP - Renal Physiology
影响因子:
--
作者:
T. Kennedy;C. Crawford;S. Wildman;C. Peppiatt
通讯作者:
C. Peppiatt