Metabolism of hibernating myocardium and regulation of uncoupling protein 2
10.3969/j.issn.1001-1978.2017.03.001
- VernacularTitle:冬眠心肌的能量代谢与线粒体解偶联蛋白2的调控作用
- Author:
Haiying SONG
;
Peili WANG
;
Jiangang LIU
;
Chenglong WANG
- Keywords:
coronary heart disease;
viable myocardium;
hiberna-ting myocardium;
cardiac metabolism;
mitochondria;
UCP2
- From:
Chinese Pharmacological Bulletin
2017;33(3):297-300
- CountryChina
- Language:Chinese
-
Abstract:
HM(hibernating myocardium)is an adaptive phenome-non of myocardium against sustained ischemia,which maintains its tissue vitality through balancing energy supply and demand.It widely exists in patients suffering from coronary heart disease. HMhas its own metabolic pattern,instead of regular FAO(fatty acid β-oxidation)-based metabolism,glycolysis became main pro-cedure.Reduction of FAO,TCA (tricarboxylic cacidcycle),ETC (electron transport chain)enzyme has been observed,ROS(reac-tive oxygen species)and UCP2(uncoupling protein 2)have been up-regulated.UCP2,which promotes proton leak across innermembrane of mitochondrial and leads to ATP reduction,has e-merged as an important regulator of the energy production.It is regulated by up-stream proteins such as AMPK,PPARs,PGC-1α,and other factors like FFA(free fat acid),ROS and purine nucleotide.HM has potential function of ischemic myocardium, which can improve cardiac function through reasonable interven-tion.Modulation of UCP2 can optimize energy production,and is essential to HM metabolism.
