Effects of ivabradine hydrochloride combined with trimetazidine on myocardial fibrosis in rats with chronic heart failure.

Abstract:

:Effects of ivabradine hydrochloride (Iva) and trimetazidine on myocardial fibrosis (MF) in rats with chronic heart failure (CHF) werφe explored. Fifty Wistar rats were randomly divided into sham operation, model, Iva, trimetazidine and combined drug group with 10 rats each. All rats except those in sham operation group were subjected to establish CHF model by constricting the abdominal aorta. After successful modeling, rats in the sham operation and model group received normal saline (10 mg/kg) gavage daily, the Iva group received Iva (10 mg/kg) gavage, the trimetazidine group received trimetazidine (10 mg/kg) gavage, and the combined drug group were given Iva (10 mg/kg) and trimetazidine (10 mg/kg) gavage for 12 weeks. The changes of hemodynamic indexes and heart rate, connective tissue growth factor (CTGF) and superoxide dismutase (SOD) levels as well as transforming growth factor β1 (TGF-β1) and collagen I (COL-I) expression levels in myocardial tissue of each group were detected. Compared with sham operation group, the left ventricular end-diastolic pressure (LVEDP) level, CTGF expression, TGF-β1 mRNA and COL-I mRNA expression levels in model group increased significantly, but the ± dp/dtmax and SOD content in myocardial tissue decreased significantly. Compared with model group, the LVEDP level, CTGF expression, TGF-β1 mRNA and COL-I mRNA expression levels in Iva group, trimetazidine group and combined drugs decreased significantly, but the ± dp/dtmax and the SOD content in myocardial tissue increased significantly (P<0.05). Changes in the combined drug group were the most notable (P<0.05). Iva combined with trimetazidine reduces LVEDP in rat with CHF, increases SOD content, and inhibits CTGF expression and TGF-β1 and COL-I expression levels in myocardial tissues, thus achieving the inhibitory effect on MF.

journal_name

Exp Ther Med

authors

Ma D,Xu T,Cai G,Wu X,Lei Z,Liu X,Li J,Yang N

doi

10.3892/etm.2019.7730

subject

Has Abstract

pub_date

2019-09-01 00:00:00

pages

1639-1644

issue

3

eissn

1792-0981

issn

1792-1015

pii

ETM-0-0-7730

journal_volume

18

pub_type

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