标题:
ALDH2 Improves Left Ventricular Remodeling and Function in C57 Mouse Model of Metabolic Syndrome
讲者:
李传保
单位:
山东大学齐鲁医院
播放:
1480
论文摘要:
Objective: The objective of the present study was to verify ALDH2’s ability to prevent myocardial remodeling and to elucidate the potential molecular mechanisms in MS mice.
Methods: A mouse model of MS was established by high-fat diet. MS mice were further divided into three groups. The myocardial lesions were identified by echocardiogram, transmission electron microscope, HE staining, and Masson staining. TUNEL technique were used to detect cardiomyocyte apoptosis. Immunohistochemistry, Western blot and Real time PCR were performed to analysis the proteins and genes in signal transduction pathway.
Results: In the MS group, ALDH2 activity in heart mitochondria was markedly decreased (P<0.01). Compared with MS and GFP group, 4-HNE expression decreased significantly (P<0.01), whereas ROS content were decreased without statistical significance in the ALDH2 group. The protein of p-JNK、AP-1、p-IRS-1(Ser 307)、caspase-3 significantly decreased in the ALDH2 group and p-AKT/ AKT significantly increased (P<0.05).
Conclusions: ALDH2 plays a better cardioprotective role in MS mouse by reducing 4-HNE and improving insulin resistance.