Peripheral chemoreception and arterial pressure responses to intermittent hypoxia.

Peripheral chemoreception and arterial pressure responses to intermittent hypoxia.
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DOI:
10.1002/cphy.c140039
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发表时间:
2015-04
影响因子:
5.8
通讯作者:
Nanduri J
Nanduri J
中科院分区:
医学1区
文献类型:
--
作者:
Prabhakar NR;Peng YJ;Kumar GK;Nanduri J

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颈动脉体是检测动脉血氧水平变化的主要外周化学感受器,所产生的化学感受器反射是血压的有效调节器。复发性呼吸暂停伴间歇性缺氧(IH)是成人和早产儿的主要临床问题。患有复发性呼吸暂停的成年患者表现出交感神经活动增强和高血压。早产的成年人易患早发性高血压。现有证据表明,颈动脉体化学感受器反射有助于成人和新生儿IH引起的高血压。IH的实验模型为颈动脉体化学反射介导的高血压的细胞和分子机制提供了重要的见解。本文就IH对颈动脉体功能的影响、细胞、分子和表观遗传学机制以及化学感受器反射在高血压中的作用作一综述。
Carotid bodies are the principal peripheral chemoreceptors for detecting changes in arterial blood oxygen levels, and the resulting chemoreflex is a potent regulator of blood pressure. Recurrent apnea with intermittent hypoxia (IH) is a major clinical problem in adult humans and infants born preterm. Adult patients with recurrent apnea exhibit heightened sympathetic nerve activity and hypertension. Adults born preterm are predisposed to early onset of hypertension. Available evidence suggests that carotid body chemoreflex contributes to hypertension caused by IH in both adults and neonates. Experimental models of IH provided important insights into cellular and molecular mechanisms underlying carotid body chemoreflex-mediated hypertension. This article provides a comprehensive appraisal of how IH affects carotid body function, underlying cellular, molecular, and epigenetic mechanisms, and the contribution of chemoreflex to the hypertension.
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