银杏黄酮对心肌缺血/再灌注损伤的保护作用

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Abstract Objective To investigate the protective effects of ginkgetin (GK) on myocardial ischemia reperfusion injury (MIRI) in rats and its effects on cardiomyocyte apoptosis.Methods SD rats were divided randomly into sham, model, GK high dose (200 mg/kg) and GK low dose (100 mg/kg) groups. GK was administered by intraperitoneal injection for 7 days before the model operation. Rat model of MIRI was established by coronary artery ligation for 45 min followed by 360 min reperfusion. After the reperfusion, myocardial infarct area (IA), area at risk (AAR) and left ventricle area (LVA) were measured by the NBT staining. The cardiomyocyte apoptosis rate was detected by flow cytometry. The caspase activities in cardiomyocytes were determined by fluorescence method and cardiomyocyte apoptosis factors (Fas and Fas-L) mRNA expression were examined by RT-qPCR.Results GK (200 and 100 mg/kg) significantly reduced IA/AAR and IA/LVA, compared to those of model group (P<0.05 or P<0.01). The cardiomyocyte apoptosis rates in GK groups were evidently reduced (P<0.01). The intracytoplasmic caspase-3 and caspase-8 activities in GK groups were significantly inhibited (P<0.05 or P<0.01). The Fas and Fas-L mRNA expression in GK groups were evidently reduced, which showed significant differences compared to those of model group (P<0.05).Conclusion GK pretreatment shows protective effect on MIRI, which related to preventing the activation of death receptor signaling pathway and inhibition of cardiomyocyte apoptosis.

Key words： ginkgetin myocardial ischemia reperfusion injury cardiomyocyte apoptosis death receptor signaling pathway

Received: 10 January 2022

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	Articles by authors
	QIAN Xiufang
	SUN Huixian
	WANG Chen
	CHEN Ying

Cite this article:

QIAN Xiufang,SUN Huixian,WANG Chen等. Cardioprotective Effects of Ginkgetin on Rats with Myocardial Ischemia Reperfusion Injury[J]. Med. J. Chin. Peop. Armed Poli. Forc., 2022, 33(9): 755-758.

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http://journal08.magtechjournal.com/Jwk_wjyx/EN/ OR http://journal08.magtechjournal.com/Jwk_wjyx/EN/Y2022/V33/I9/755

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