PLoS ONE 2015-01-01

A Food-Derived Flavonoid Luteolin Protects against Angiotensin II-Induced Cardiac Remodeling.

Atsuko Nakayama, Hiroyuki Morita, Tomoko Nakao, Toshihiro Yamaguchi, Tomokazu Sumida, Yuichi Ikeda, Hidetoshi Kumagai, Yoshihiro Motozawa, Tsukasa Takahashi, Atsushi Imaizumi, Tadashi Hashimoto, Ryozo Nagai, Issei Komuro

文献索引：PLoS ONE 10 , e0137106, (2015)

全文：HTML全文

摘要

Oxidative stress has been implicated in cardiac remodeling (cardiac fibrosis and hypertrophy), which impairs cardiac function and metabolism; therefore, it is anticipated antioxidative compounds will have protective properties against cardiac remodeling. Luteolin (3',4',5,7-tetrahydroxyflavone), a widely distributed flavonoid found in many herbal extracts including celery, green pepper, perilla leaves and seeds, and chamomile, is a known to be a potent antioxidant and was previously demonstrated to exert an antifibrotic effect in the lungs and the liver. In this study, we clearly demonstrate that oral pretreatment with the higher-luteolin diet (0.035% (wt/wt)) protected against cardiac fibrosis and hypertrophy as well as a hyperoxidative state in Ang II-infused rats. In cardiac tissue, increased gene expression levels of TGFβ1, CTGF, Nox2, Nox4, ANP, and BNP induced by Ang II were restored by oral pretreatment of this high-luteolin diet. In cultured rat cardiac fibroblasts, H2O2-induced TGFβ1 expression and the phosphorylation of JNK were suppressed by luteolin pretreatment. In conclusion, food-derived luteolin has protective actions against Ang II-induced cardiac remodeling, which could be mediated through attenuation of oxidative stress.