Calcium dynamics in vascular smooth muscle.

Calcium dynamics in vascular smooth muscle.
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DOI:
10.1111/micc.12046
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发表时间:
2013-05
期刊:
Microcirculation (New York, N.Y. : 1994)
影响因子:
--
通讯作者:
Navedo MF
Navedo MF
中科院分区:
其他
文献类型:
--
作者:
Amberg GC;Navedo MF

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平滑肌细胞最终负责决定血管腔直径和血流。细胞内钙的动态变化是调节血管平滑肌收缩性的关键机制。因此,影响细胞内钙的过程是血管功能的重要调节因素,具有生理和病理生理后果。在这篇综述中,我们讨论了在血管平滑肌细胞中已被识别和表征的主要动态钙信号。这些信号在其产生机制、时间特性和空间分布方面各不相同。所讨论的钙信号包括钙波、连接部钙瞬变、钙火花、钙泡芙以及L型钙通道小火花。对于每种钙信号,我们阐述其潜在机制、一般特性、生理重要性和调节作用。
Smooth muscle cells are ultimately responsible for determining vascular luminal diameter and blood flow. Dynamic changes in intracellular calcium are a critical mechanism regulating vascular smooth muscle contractility. Processes influencing intracellular calcium are therefore important regulators of vascular function with physiological and pathophysiological consequences. In this review we discuss the major dynamic calcium signals identified and characterized in vascular smooth muscle cells. These signals vary with respect to their mechanisms of generation, temporal properties, and spatial distributions. The calcium signals discussed include calcium waves, junctional calcium transients, calcium sparks, calcium puffs, and L-type calcium channel sparklets. For each calcium signal we address underlying mechanisms, general properties, physiological importance, and regulation.
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