A Brief Overview of Nitric Oxide and Reactive Oxygen Species Signaling in Hypoxia-Induced Pulmonary Hypertension.

A Brief Overview of Nitric Oxide and Reactive Oxygen Species Signaling in Hypoxia-Induced Pulmonary Hypertension.
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DOI:
10.1007/978-3-319-63245-2_6
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发表时间:
2017
影响因子:
--
通讯作者:
Jourd'heuil D
Jourd'heuil D
中科院分区:
医学4区
文献类型:
--
作者:
Jaitovich A;Jourd'heuil D

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肺动脉高压(PH)的特征是血管收缩增加和平滑肌细胞增生,驱动动脉血管的病理性血管重塑。在这篇简短的综述中,我们讨论了与PH相关的活性氧(ROS)和一氧化氮(NO)的主要来源,以及它们的产生失调导致PH的机制。具体而言,缺氧诱导的PH与内皮型一氧化氮合酶(eNOS)衍生的NO产生减少和通过eNOS解偶联和线粒体呼吸缺陷增加超氧化物(O2.−)的产生有关。这驱动了NO/可溶性鸟苷酸环化酶(sGC)通路的抑制和转录因子缺氧诱导因子-1 α(HIF-1α)的激活,从而导致肺血管系统的失调。旨在增加NO或cGMP生物利用度的治疗方法适用于缺氧疾病诱导的PH。同样,现在考虑靶向HIF-1α的策略。总体而言,肺动脉高压,包括缺氧诱导的PH提供了独特的机会,合理开发的治疗集中在调节氧化还原信号。
Pulmonary hypertension (PH) is characterized by increased vasoconstriction and smooth muscle cell hyperplasia driving pathological vascular remodeling of arterial vessels. In this short review, we discuss the primary source of reactive oxygen species (ROS) and nitric oxide (NO) relevant to PH and the mechanism by which dysregulation of their production contributes to PH. Specifically, hypoxia-induced PH is associated with diminished endothelial nitric oxide synthase (eNOS)-derived NO production and increased production of superoxide (O2.−) through eNOS uncoupling and defective mitochondrial respiration. This drives the inhibition of the NO/soluble guanylate cyclase (sGC) pathway and activation of the transcription factor hypoxia-inducible factor-1α (HIF-1α) with consequential dysregulation of the pulmonary vasculature. Therapeutics aimed at increasing NO or cGMP bioavailabilities are amenable to hypoxia disease-induced PH. Similarly, strategies targeting HIF-1α are now considered. Overall, pulmonary hypertension including hypoxia-induced PH offers unique opportunities for the rational development of therapeutics centered on modulating redox signaling.
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