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Abstract Title:

Protective effect of Fisetin against angiotensin II-induced apoptosis by activation of IGF-IR-PI3K-Akt signaling in H9c2 cells and spontaneous hypertension rats.

Abstract Source:

Phytomedicine. 2019 Apr ;57:1-8. Epub 2018 Sep 17. PMID: 30668312

Abstract Author(s):

Yeh-Peng Chen, Kalaiselvi Sivalingam, Marthandam Asokan Shibu, Rajendran Peramaiyan, Cecilia Hsuan Day, Chia-Yao Shen, Chao-Hung Lai, Ray-Jade Chen, Vijaya Padma Viswanadha, Ya-Fang Chen, Chih-Yang Huang

Article Affiliation:

Yeh-Peng Chen

Abstract:

BACKGROUND: Fisetin, a polyphenolic compound, has drawn notable attention owing to its antioxidant, anti-inflammatory, anti-cancer and neuroprotective effects. However, the cardiac effects of fisetin are not clear yet.

HYPOTHESIS: The aim of the present study is to examine the cardioprotective effect of fisetin against Ang-II induced apoptosis in H9c2 cells and in spontaneous hypertensive rats (SHR).

METHODS/STUDY DESIGN: The in vitro protective effect of fisetin was evaluated after the cells were treated with fisetin (50 µM/ml/ 24  h) for 2  h prior or after Ang-II administration to induce apoptosis. For in vivo experiments, SHRs were orally administered with fisetin (10  mg/kg) twice a week for 6 weeks. Cellular apoptosis was analyzed by TUNEL staining assay and the modulation in the expression levels of proteins involved in apoptosis and cell survival were determined by western blotting.

RESULTS: Our results demonstrate the potent cardioprotective efficacy of fisetin against Ang-II induced apoptosis in H9c2 cells and in SHR models. Fisetin administration reduced the apoptotic nuclei considerably And reduced the expression of apoptotic proteins such as TNF-α, Fas L, FADD, Cleaved caspase-3 and Cleaved PARP and increased the cell survival and anti-apoptotic proteins like Bcl-2, Bcl-xp-IGF1R, p-PI3K and p-AKT in both in vitro and in vivo models.

CONCLUSION: In conclusion, the results of the present study reveal that fisetin activates the IGF-IR-dependent p-PI3K/p-Akt survival signaling pathway and suppresses the caspase dependent apoptosis.

Study Type : In Vitro Study

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Sayer Ji
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