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Punicalagin prevents obesity-related cardiac dysfunction through promoting DNA demethylation in mice

Food Science and Human Wellness 2024年第3期13卷 1465-1474页

作者： Shengjie Pei Run Liu Qingqing Ma Peng Jiang Xin He Zhongshi Qi Jiacheng Fang Xu Yang Zirui Yao Xiaoqian Liu Xianfeng Jing Lei Chen Duo Li Institute of Nutrition&Health Qingdao UniversityQingdao 266071China School of Public Health Qingdao UniversityQingdao 266071China Central Laboratory Guizhou Aerospace HospitalZunyi 563000China Health Centers of Licha Town Qingdao 266071China College of Computer Science and Technology Qingdao UniversityQingdao 266071China

The aim of this study was to investigate whether punicalagin(PU)could prevent obesity-related cardiac dysfunction by promoting DNA demethy lation,and to explore its possible mechanism.C57BL/6J mice were fed with standard diet,high-fat diet(HFD),HFD supplemented with resveratrol,low-dose PU(LPU)and high-dose PU(HPU)for 8 *** with HFD group,body weight was significantly lower in PU treatment groups,number of cardionwocytes and the protein level of myosin heavy chain 7B were significantly higher in PU treatment *** of 5-hydroxymethylcytosine and 5-formylcytosine were significantly lower in HFD group than in other *** with the HFD group,the protein level of ten-eleven translocation enzyme(TET)2 was significantly higher in PU treatment groups,p-AMP-activated protein kinase(AMPK)was significantly higher in LPU *** of total antioxidant capacity and the protein levels of complexesⅡ/Ⅲ/Ⅴ,oxoglutarate dehydrogenase,succinate dehydrogenase B and fumarate hdrolase were significantly lower in HFD group than PU treatment *** ratio of(succinic acid+fumaric acid)/a-ketoglutarate was significantly higher in HFD group than other *** conclusion,PU up-regulated TETs enzyme activities and TET2 protein stability through alleviating mitochondrial dysfunction and activating AMPK,so as to promote DNA demethylation,thus preventing obesity-related cardiac dysfunction.

关键词： DNA demethylation Mitochondrial function Obesity-related cardiac dysfunction Punicalagin ten-eleven translocation family enzymes

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