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NADPH oxidases (NOXs) are a group of enzymes for superoxide anion (O2ยท- ) generation through transferring electrons from NADPH to molecular oxygen, which is rapidly converted into hydrogen peroxide (H2O2). There are seven members in NOX family, including NOX1 to NOX5, dual oxidase1, and dual oxidase 2. Recent studies have demonstrated that NOX subtypes may have different functions in different types of pulmonary arterial hypertension (PAH). The NOX-derived reactive oxygen species (ROS) are key factors that are involved in promoting the processes of pulmonary vascular remodeling, such as endothelial dysfunction, proliferation of pulmonary arterial smooth muscle cells (PASMCs), and cellular trans-differentiation, which are the basic pathologic characteristics of PAH. Inhibition of NOX shows beneficial effect on prevention of PAH development. Thus, NOX might be a potential target for PAH therapy. The main purpose of this review is to summarize recent findings on the role of NOX, particularly the NOX subtypes, in promotion of PAH development and to list recent progress regarding the NOX-based intervention for PAH.


Jing-Jie Peng, Bin Liu, Jin-Yun Xu, Jun Peng, Xiu-Ju Luo. NADPH oxidase: its potential role in promotion of pulmonary arterial hypertension. Naunyn-Schmiedeberg's archives of pharmacology. 2017 Apr;390(4):331-338

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PMID: 28190244

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