Lung capillaries raise the hypoxia alarm.

Lung capillaries raise the hypoxia alarm.
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肺毛细血管会发出缺氧警报。

DOI:
10.1172/jci65623
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发表时间:
2012
期刊:
The Journal of clinical investigation
影响因子:
--
通讯作者:
Bhattacharya,Jahar
Bhattacharya,Jahar
中科院分区:
--
文献类型:
--
作者:
Bhattacharya,Jahar

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当通气受阻时,肺可以通过激活局部动脉血管收缩、减少流向通气不足区域的血流并将血流重新定向至通气良好的肺泡来防止血氧丧失。这种现象,缺氧性肺血管收缩(HPV),保持了血液氧合的整体效率,但缺氧信号传递到收缩小动脉的平滑肌的机制在很大程度上仍然是一个谜。在本期的JCI中,Wang等揭示了缺氧肺泡的内皮细胞在感受缺氧和传递启动HPV的信号中起着关键作用。
When ventilation is blocked, the lung can protect against the loss of blood oxygenation by activating localized arterial vasoconstriction, reducing blood flow to underventilated regions, and redirecting flow to better-ventilated alveoli. This phenomenon, hypoxic pulmonary vasoconstriction (HPV), preserves the overall efficiency of blood oxygenation, but the mechanism by which the hypoxic signal is transmitted to the smooth muscle that contracts the arterioles has remained largely a mystery. In this issue of theJCI, Wang et al. reveal that the endothelial lining of the hypoxic alveoli plays a key role in sensing hypoxia and transmitting the signal to initiate HPV.
DOI: 10.1172/jci26605
发表时间: 2006-08-01
影响因子: 15.9
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DOI: --
发表时间: 1980
期刊: Journal of applied physiology: respiratory, environmental and exercise physiology
影响因子: --
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