Sheng li ke xue jin zhan [Progress in physiology]
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Sheng Li Ke Xue Jin Zhan · Apr 2006
Review[Distribution of ion channels in pulmonary arterial smooth muscle cells and their roles in hypoxia pulmonary vasoconstriction].
Hypoxic pulmonary vasoconstriction (HPV) is the rapid, reversible increase in pulmonary vascular resistance that occurs when the alveolar oxygen tension falls below a threshold level, thereby achieving ventilation/perfusion matching. HPV is closely related to the state of K+, Ca2+ and Cl- channels in pulmonary arterial smooth muscle cells, which distribute heterogeneously along the longitude of pulmonary artery tree, and cause heterogeneous vasoconstriction response in different part of pulmonary artery in HPV. In this review we summarize current knowledge about the distribution of these ion channels and their roles in HPV.