Regulation of vascular smooth muscle contraction. The roles of Ca2+, protein kinase C and myosin light chain phosphatase.
Regulation of vascular smooth muscle contraction. The roles of Ca2+, protein kinase C and myosin light chain phosphatase.
复制标题
血管平滑肌收缩的调节。
DOI:
--
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发表时间:
1996
期刊:
影响因子:
--
通讯作者:
Yoh Takuwa
中科院分区:
文献类型:
--
作者:
Yoh Takuwa
Vasoconstrictors bind to their receptors on the cell surface to active phospholipase C and Ca2+ channels, resulting in the mobilization of Ca2+ from intracellular are extracellular Ca2+ pools and protein kinase C activation. Vasoconstrictors are also thought to activate a distinct cellular mechanism for downregulating 20 kDa myosin light chain (MLC20) phosphatase activity, which involves Rho p21 and protein kinase C, resulting in an increase in the Ca2+ sensitivity of MLC20 phosphorylation. Protein kinase C also appears to activate a MLC20 phosphorylation-independent mechanism for contraction, contributing to the maintenance of agonist-induced contraction. On the other hand, vasorelaxants inhibit activation of phospholipase C and gating of Ca2+ channels, or stimulate Ca2+ extrusion across the plasma membrane, leading to a decrease in the [Ca2+]i. Vasorelaxants also appear to stimulate MLC20 phosphatase activity, resulting in a further reduction of contractile response. The modulatory mechanism for changing the Ca2+ sensitivity, together with the major regulatory mechanism for cellular Ca2+ metabolism, plays an important role in regulating vascular smooth muscle tone.
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DOI:
10.1016/s0021-9258(18)43828-8
发表时间:
1994-12
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Hiroyuki Shimizu;Masaaki Ito;M. Miyahara;K. Ichikawa;S. Okubo;Tokuji Konishi;Michiko Naka;Toshio Tanaka;K. Hirano;D. Hartshorne
通讯作者:
Hiroyuki Shimizu;Masaaki Ito;M. Miyahara;K. Ichikawa;S. Okubo;Tokuji Konishi;Michiko Naka;Toshio Tanaka;K. Hirano;D. Hartshorne
DOI:
--
发表时间:
1990
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Ikebe,M;Reardon,S
通讯作者:
Reardon,S
DOI:
10.1152/ajpcell.1992.263.2.c540
发表时间:
1992
期刊:
The American journal of physiology
影响因子:
--
作者:
Moreland,S;Nishimura,J;vanBreemen,C;Ahn,HY;Moreland,RS
通讯作者:
Moreland,RS
DOI:
--
发表时间:
1989
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Singer,HA;Oren,JW;Benscoter,HA
通讯作者:
Benscoter,HA
DOI:
10.1016/s0021-9258(18)66923-6
发表时间:
1986-11
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Y. Takuwa;N. Takuwa;H. Rasmussen
通讯作者:
Y. Takuwa;N. Takuwa;H. Rasmussen