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Puerarin prevents progression of experimental hypoxia-induced pulmonary hypertension via inhibition of autophagy.

Abstract：

:Pulmonary arterial hypertension (PAH) is defined as elevation of mean pulmonary arterial pressure to ≥25 mmHg within the low pressure pulmonary circulatory system. PAH is characterized by obstructive vascular remodeling, partially due to excessive pulmonary arterial smooth muscle cell (PASMC) proliferation. Puerarin is a natural flavonoid isolated from the herb Radix puerariae, which has been widely used for the treatment of cardiovascular and cerebrovascular disorders and diabetes. However, how puerarin mediates autophagy in the progression of pulmonary vascular remodeling is unclear. In this study, we explored the effects of puerarin in a hypoxic pulmonary hypertension (PH) rat model using immunohistochemistry, and morphometric analyses of right ventricle. In addition, cell counting kit 8 assay, western blotting and flow cytometry were employed to test cell proliferation in PASMCs, and then autophagy was tested with mRFP-GFP-LC3 fluorescence microscopy and Western blot. We found that puerarin could alleviate hypoxia-induced PH in rats and improved pulmonary histopathology, and also reduced the expression of autophagy markers in vivo and in vitro. Moreover, puerarin also ameliorated hypoxia-induced PASMC proliferation in an autophagy-dependent manner. Overall, these findings demonstrated that puerarin could prevent hypoxia-induced PH in rats, possibly via reducing autophagy and suppressing cell proliferation.

journal_name

J Pharmacol Sci

journal_title

Journal of pharmacological sciences

authors

Zhang X,Liu Q,Zhang C,Sheng J,Li S,Li W,Yang X,Wang X,He S,Bai J,Zhu D

doi

10.1016/j.jphs.2019.09.010

subject

Has Abstract

pub_date

2019-10-01 00:00:00

pages

97-105

issue

2

eissn

1347-8613

issn

1347-8648

pii

S1347-8613(19)35713-5

journal_volume

141

pub_type

杂志文章

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