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Cardiovasc Ther. 2015 Jun;33(3):134-40. doi: 10.1111/1755-5922.12121.

The Cardioprotective Effect of Icariin on Ischemia-Reperfusion Injury in Isolated Rat Heart: Potential Involvement of the PI3K-Akt Signaling Pathway.

Author information

1
Department of Cardiology, The Fifth People's Hospital of Shanghai, Fudan University, Shanghai, China.
2
Department of Nephrology, Xiangyang Central Hospital, Hubei University of Arts and Science, Xiangyang, Hubei, China.
3
Department of Pharmacy, The Fifth People's Hospital of Shanghai, Fudan University, Shanghai, China.
4
Department of Cardiology, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei, China.
5
Department of Rehabilitation, The Second People's Hospital of Huai'an, Huai'an, Jiangsu, China.

Abstract

AIMS:

Icariin (ICA), a flavonoid isolated from epimedii, has been reported to have potential protective effects on the cardiovascular system. This study is to investigate the effect and the underlying mechanisms of ICA on ischemia/reperfusion (I/R) injury.

METHODS:

Wister rat hearts were subjected to I/R using Langendorff perfusion system. Cardiac function, myocardial infarct size, lactate dehydrogenase (LDH), and creatine kinase-MB (CK-MB) activities in coronary effluent, and superoxide dismutase (SOD) and malondialdehyde (MDA) content in heart tissue and cardiomyocyte apoptosis were assayed.

RESULTS:

Compared with the I/R group, ICA treatment significantly improved cardiac function, decreased myocardial infarct size, enzyme activity, oxidative stress, and apoptosis. In addition, ICA treatment lead to an increased p-Akt level, which was partially reversed by LY294002, a PI3K pathway inhibitor.

CONCLUSION:

Our study suggests that ICA has a cardioprotective effect against I/R injury, which is associated with its antioxidative and anti-apoptotic effect, at least partially, through the activation of PI3K-Akt signaling pathway.

KEYWORDS:

Akt; Apoptosis; Cardioprotection; Icariin; Ischemia/reperfusion

PMID:
25847837
DOI:
10.1111/1755-5922.12121
[Indexed for MEDLINE]

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