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- W2341124003 abstract "Salidroside, an active ingredient isolated from Rhodiola rosea, has shown to exert protective effects against chronic hypoxia-induced pulmonary arterial hypertension (PAH). However, the underlying mechanisms were not well known. Based on our recent reports, we predicted the involvement of adenosine monophosphate-activated protein kinase (AMPK) mediated effects in salidroside regulation of PAH. Firstly, to prove the hypothesis, rats were exposed to chronic hypoxia and treated with increasing concentrations of salidroside or a selective AMPK activator-5'-aminoimidazole-4-carboxamide ribonucleoside (AICAR) for 4 weeks. After salidroside or AICAR treatment, the chronic hypoxia-induced right ventricular hypertrophy and pulmonary artery remodeling were attenuated. Then the effects of salidroside or AICAR on hypoxia-induced excess cellular proliferation and apoptosis resistance of pulmonary arterial smooth muscle cells (PASMCs), which contributed to pulmonary arterial remodeling, were investigated. Our results suggested salidroside, as well as AICAR, reversed hypoxia-induced PASMCs proliferation and apoptosis resistance while AMPK inhibitor Compound C enhanced the effects of hypoxia. To reveal the potential cellular mechanisms, activation of AMPKα1 and expression of the genes related to proliferation and apoptosis were analyzed in PASMCs after salidroside treatment under hypoxia conditions. The results demonstrated salidroside as well as AICAR might inhibit chronic hypoxia-induced PASMCs proliferation via AMPKα1-P53-P27/P21 pathway and reverse apoptosis resistance via AMPKα1-P53-Bax/Bcl-2-caspase 9-caspase 3 pathway." @default.
- W2341124003 created "2016-06-24" @default.
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- W2341124003 date "2016-01-01" @default.
- W2341124003 modified "2023-10-16" @default.
- W2341124003 title "Salidroside exerts protective effects against chronic hypoxia-induced pulmonary arterial hypertension via AMPKα1-dependent pathways." @default.
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