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2016 ; 7
(ä): 101
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Aldehyde Dehydrogenase 2 Has Cardioprotective Effects on Myocardial
Ischaemia/Reperfusion Injury via Suppressing Mitophagy
#MMPMID27148058
Ji W
; Wei S
; Hao P
; Xing J
; Yuan Q
; Wang J
; Xu F
; Chen Y
Front Pharmacol
2016[]; 7
(ä): 101
PMID27148058
show ga
Mitophagy, a selective form of autophagy, is excessively activated in myocardial
ischemia/reperfusion (I/R). The study investigated whether aldehyde dehydrogenase
2 (ALDH2) exerted its cardioprotective effect by regulating mitophagy. Myocardial
infarct size and apoptosis after I/R in rats were ameliorated by Alda-1, an ALDH2
activator, and aggravated by ALDH2 inhibition. Both in I/R rats and
hypoxia/reoxygenation H9C2 cells, ALDH2 activation suppressed phosphatase and
tensin homolog-induced putative kinase 1 (PINK1)/Parkin expression, regulating
mitophagy, by preventing 4-hydroxynonenal, reactive oxygen species and
mitochondrial superoxide accumulation. Furthermore, the effect was enhanced by
ALDH2 inhibition. Thus, ALDH2 may protect hearts against I/R injury by
suppressing PINK1/Parkin-dependent mitophagy.