Anti-apoptotic role of mitochondrial aldehyde dehydrogenase 2 in myocardial ischemia/reperfusion injury in diabetic rats / 南方医科大学学报
Journal of Southern Medical University
;
(12): 345-348, 2012.
Article
in Chinese
| WPRIM
| ID: wpr-267603
ABSTRACT
<p><b>OBJECTIVE</b>To evaluate the anti-apoptotic effect of aldehyde dehydrogenase 2 (ALDH2) on myocardial ischemia/reperfusion (I/R) injury in diabetic rats.</p><p><b>METHODS</b>Normal male SD rats were divided into normal, diabetes and ethanol (the agonist of ALDH2) + diabetes groups. In the latter two groups, diabetes was induced by an intraperitoneal injection of 55 mg/kg STZ. Four weeks after the modeling, myocardial I/R was mimicked ex vivo, and lactate dehydrogenase (LDH) content in the coronary flow was determined. The activities of caspase-3 and ALDH2 were evaluated, and the expressions of Bcl-2 and Bax mRNA in the left anterior myocardium were detected using RT-PCR.</p><p><b>RESULTS</b>In diabetic group, LDH release and caspase-3 activity were increased, while ALDH2 activity and Bcl-2/Bax mRNA expression were decreased as compared to those in normal control group. Compared with the diabetic group, ALDH2 agonist ethanol significantly reduced LDH release and caspase-3 activity, increased ALDH2 activity and Bcl-2/Bax mRNA expression.</p><p><b>CONCLUSION</b>In diabetic rats, enhanced ALDH2 expression can offer mycardial protection possibly in relation to suppress cell apoptosis.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Pathology
/
Pharmacology
/
Myocardial Reperfusion Injury
/
Rats, Sprague-Dawley
/
Myocardial Ischemia
/
Apoptosis
/
Proto-Oncogene Proteins c-bcl-2
/
Mitochondrial Proteins
/
Diabetes Mellitus, Experimental
/
Ethanol
Limits:
Animals
Language:
Chinese
Journal:
Journal of Southern Medical University
Year:
2012
Type:
Article
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