PMID- 24797301 OWN - NLM STAT- MEDLINE DCOM- 20150419 LR - 20140709 IS - 1029-2470 (Electronic) IS - 1029-2470 (Linking) VI - 48 IP - 8 DP - 2014 Aug TI - (-)-Epigallocatechin-3-gallate attenuated myocardial mitochondrial dysfunction and autophagy in diabetic Goto-Kakizaki rats. PG - 898-906 LID - 10.3109/10715762.2014.920955 [doi] AB - Type 2 diabetes mellitus (T2DM) is a risk factor for heart disease. However, the mechanisms of T2DM involvement in cardiac complications are still unclear. In the present study, we investigated mitochondria-related mechanisms underlying the pathogenesis of myocardial disorders in diabetic Goto-Kakizaki (GK) rats. We found that remarkable myocardial mitochondrial deficiency and dysfunction as well as oxidative stress occurred in the heart of GK rats. In addition, our results suggested that the loss of mitochondria was in response to elevated autophagy and upstream FoxO factors in diabetic myocardium. More importantly, (-)-epigallocatechin-3-gallate (EGCG), a polyphenol derived from green tea, successfully improved mitochondrial function and autophagy in the heart of GK rats. Our findings revealed that diabetes-associated myocardial mitochondrial deficiency and dysfunction was associated with enhanced autophagy in myocardium, and EGCG might be a potential agent in preventing and treating myocardial disorders involved in diabetes. FAU - Liu, J AU - Liu J AD - Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of the Ministry of Education, School of Life Science and Technology and Frontier Institute of Life Science, FIST, Xi'an Jiaotong University , Xi'an , P. R. China. FAU - Tang, Y AU - Tang Y FAU - Feng, Z AU - Feng Z FAU - Liu, J AU - Liu J FAU - Liu, J AU - Liu J FAU - Long, J AU - Long J LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140604 PL - England TA - Free Radic Res JT - Free radical research JID - 9423872 RN - 8R1V1STN48 (Catechin) RN - BQM438CTEL (epigallocatechin gallate) SB - IM MH - Animals MH - Autophagy/drug effects MH - Catechin/*analogs & derivatives/pharmacology MH - Diabetes Mellitus, Experimental/drug therapy/metabolism/pathology MH - Disease Models, Animal MH - Male MH - Mitochondria, Heart/*drug effects/*metabolism MH - Oxidative Stress/drug effects MH - Rats MH - Rats, Wistar OTO - NOTNLM OT - EGCG OT - autophagy OT - diabetes OT - mitochondrial dysfunction OT - myocardium EDAT- 2014/05/07 06:00 MHDA- 2015/04/22 06:00 CRDT- 2014/05/07 06:00 PHST- 2014/05/07 06:00 [entrez] PHST- 2014/05/07 06:00 [pubmed] PHST- 2015/04/22 06:00 [medline] AID - 10.3109/10715762.2014.920955 [doi] PST - ppublish SO - Free Radic Res. 2014 Aug;48(8):898-906. doi: 10.3109/10715762.2014.920955. Epub 2014 Jun 4.