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Mol Med Rep. 2014 Nov;10(5):2542-8. doi: 10.3892/mmr.2014.2488. Epub 2014 Aug 14.

Resveratrol attenuates hypoxia/reoxygenation‑induced Ca2+ overload by inhibiting the Wnt5a/Frizzled‑2 pathway in rat H9c2 cells.

Author information

1
Department of Cardiology, Zhujiang Hospital, Southern Medical University, Guangzhou, Guangdong 510282, P.R. China.
2
Department of Pharmacy, The Third People's Hospital of Nanhai District, Foshan, Guangdong 528244, P.R. China.
3
Department of Cardiology, Guangdong No. 2 Provincial People's Hospital of Southern Medical University, Guangzhou, Guangdong 510317, P.R. China.

Abstract

Resveratrol is able to protect myocardial cells from ischemia/reperfusion‑induced injury. However, the mechanism has yet to be fully elucidated. In the present study, it is reported that resveratrol has a critical role in the control of Ca2+ overload, which is the primary underlying cause of ischemia/reperfusion injury. Hypoxia/reoxygenation (H/R) treatment decreased the cell viability and increased the apoptosis of H9c2 cells, whereas the caspase‑3 and intracellular Ca2+ levels were greatly elevated compared with the control group. Treatment of H9c2 cells with resveratrol (5, 15 and 30 µM) reduced caspase‑3 expression and cardiomyocyte apoptosis in a dose‑dependent manner, and the intracellular Ca2+ overload was also significantly decreased. Furthermore, Frizzled‑2 and Wnt5a belong to the non‑canonical Wnt/Ca2+ pathway, which have been demonstrated to be responsible for Ca2+ overload, and were thus detected in the present study. The results indicated that both the mRNA and protein expression levels of Frizzled‑2 and Wnt5a in H/R‑induced H9c2 cells were markedly increased compared with the levels found in normal cells, and treatment with resveratrol (5, 15 and 30 µM) significantly reduced the expression of Frizzled‑2 and Wnt5a compared with the H/R group. The results indicated that resveratrol protected myocardial cells from H/R injury by inhibiting the Ca2+ overload through suppression of the Wnt5a/Frizzled‑2 pathway.

PMID:
25120137
DOI:
10.3892/mmr.2014.2488
[Indexed for MEDLINE]

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