title: QSYQ Attenuates Oxidative Stress and Apoptosis Induced Heart Remodeling Rats through Different Subtypes of NADPH-Oxidase.
abstract: We aim to investigate the therapeutic effects of QSYQ, a drug of heart failure (HF) in clinical practice in China, on a rat heart failure (HF) model. 3 groups were divided: HF model group (LAD ligation), QSYQ group (LAD ligation and treated with QSYQ), and sham-operated group. After 4 weeks, rats were sacrificed for cardiac injury measurements. Rats with HF showed obvious histological changes including necrosis and inflammation foci, elevated ventricular remodeling markers levels(matrix metalloproteinases-2, MMP-2), deregulated ejection fraction (EF) value, increased formation of oxidative stress (Malondialdehyde, MDA), and up-regulated levels of apoptotic cells (caspase-3, p53 and tunnel) in myocardial tissue. Treatment of QSYQ improved cardiac remodeling through counter-acting those events. The improvement of QSYQ was accompanied with a restoration of NADPH oxidase 4 (NOX4) and NADPH oxidase 2 (NOX2) pathways in different patterns. Administration of QSYQ could attenuate LAD-induced HF, and AngII-NOX2-ROS-MMPs pathway seemed to be the critical potential targets for QSYQ to reduce the remodeling. Moreover, NOX4 was another key targets to inhibit the p53 and Caspase3, thus to reduce the hypertrophy and apoptosis, and eventually provide a synergetic cardiac protective effect.
authors.affiliation: Beijing University of Chinese Medicine, Bei San Huan Dong Lu 11, Chao Yang District, 100029 Beijing, China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Wang
authors.forename: Chun
authors.initials: C
authors.lastname: Li
authors.forename: Yuli
authors.initials: Y
authors.lastname: Ouyang
authors.forename: Tianjiao
authors.initials: T
authors.lastname: Shi
authors.forename: Xiaomin
authors.initials: X
authors.lastname: Yang
authors.forename: Junda
authors.initials: J
authors.lastname: Yu
authors.forename: Qi
authors.initials: Q
authors.lastname: Qiu
authors.forename: Jing
authors.initials: J
authors.lastname: Han
authors.forename: Yan
authors.initials: Y
authors.lastname: Wu
authors.forename: Binghua
authors.initials: B
authors.lastname: Tang
authors.forename: Wei
authors.initials: W
authors.lastname: Wang