Glucagon-like peptide-1 protects against cardiac microvascular endothelial cells injured by high glucose
Asian Pacific Journal of Tropical Medicine
;
(12): 73-78, 2015.
Article
in Chinese
| WPRIM
| ID: wpr-951545
ABSTRACT
Objective:
To investigate the protective effect of glucagon-like peptid-1 (GLP-1) against cardiac microvascular endothelial cell (CMECs) injured by high glucose.Methods:
CMECs were isolated and cultured. Superoxide assay kit and dihydroethidine (DHE) staining were used to assess oxidative stress. TUNEL staining and caspase 3 expression were used to assess the apoptosis of CMECs. H89 was used to inhibit cAMP/PKA pathway; fasudil was used to inhibit Rho/ROCK pathway. The protein expressions of Rho, ROCK were examined by Western blot analysis.Results:
High glucose increased the production of ROS, the activity of NADPH, the apoptosis rate and the expression level of Rho/ROCK in CMECs, while GLP-1 decreased high glucose-induced ROS production, the NADPH activity and the apoptosis rate and the expression level of Rho/ROCK in CMECs, the difference were statistically significant (. P<0.05).Conclusions:
GLP-1 could protect the cardiac microvessels against oxidative stress and apoptosis. The protective effects of GLP-1 are dependent on downstream inhibition of Rho through a cAMP/PKA-dependent manner, resulting in a subsequent decrease in the expression of NADPH oxidase.
Full text:
Available
Index:
WPRIM (Western Pacific)
Language:
Chinese
Journal:
Asian Pacific Journal of Tropical Medicine
Year:
2015
Type:
Article
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