Chlorogenic Acid Alleviates Hyperglycemia-Induced Cardiac Fibrosis through Activation of the NO/cGMP/PKG Pathway in Cardiac Fibroblasts.

Molecular Nutrition & Food Research
Linhui QinYingwu Mei

Abstract

Hyperglycemia-induced cardiac fibrosis is one of the main causes of diabetic cardiomyopathy (DM). Chlorogenic acid (CGA) found in many foods has excellent hypoglycemic effectiveness, but it is not known whether CGA can improve DM by inhibiting cardiac fibrosis caused by hyperglycemia. Type I diabetic mice are induced by streptozotocin, and after treatment with CGA for 12 weeks, cardiac functions and fibrosis are determined. CGA significantly attenuates hyperglycemia-induced cardiac fibrosis and improves cardiac functions. The mechanism of CGA on fibrotic inhibition is further studied by immunofluorescence, western blot and RNA interference technology in vivo and in vitro. The results show CGA exerted its anti-fibrotic effects through activating the cyclic GMP/protein kinase G pathway (cGMP/PKG) to block hyperglycemia-induced nuclear translocation of p-Smad2/3, and then inhibiting pro-fibrotic gene expression in cardiac fibroblasts without depending on its hypoglycemic function. Moreover, the data also revealed that CGA increased cGMP level and activated PKG in cardiac fibroblasts by enhancing endothelial nitric oxide synthase (eNOS) activity and NO production. Besides lowering blood glucose, CGA also has an independent ability ...Continue Reading

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Citations

Nov 19, 2021·Critical Reviews in Food Science and Nutrition·Yao ChenZhiyong He

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