Globular adiponectin protects human umbilical endothelial cells against apoptosis induced by advanced glycation end products through increasing adiponectin receptor 1
10.3969/j.issn.1000-4718.2010.04.013
- VernacularTitle:球状脂联素上调脂联素受体1抑制晚期糖基化终产物诱导人脐静脉内皮细胞凋亡的初步研究
- Author:
Hongyu ZHAO
;
Qiang ZHENG
;
Jin ZHANG
- Publication Type:Journal Article
- Keywords:
Globular adiponectin;
Receptors,adiponectin;
Glycosylation end products,advanced;
Apoptosis
- From:Chinese Journal of Pathophysiology
2010;26(4):690-694
- CountryChina
- Language:Chinese
-
Abstract:
AIM: To investigate the effects of globular adiponectin (gAd) on the expression of adiponectin receptor 1 (AdipoR1) in human umbilical vein endothelial cells (HUVECs), and on the apoptosis induced by advanced glycation end products (AGEs). METHODS: HUVECs were treated with the indicated concentrations of AGEs for 24 h or 48 h in vitro. The cells in gAd treatment group were pretreated with gAd for 24 h, and then were treated with AGEs for another 24 h or 48 h. Cell variability was quantified by MTT assay. Apoptotic cells were detected by flow cytometry with Annexin-FITC/PI double staining. AdipoR1 mRNA in the cells was determined by quantitative real time reverse transcriptase-polymerase chain reaction (RT-PCR). RESULTS: The viability of HUVECs treated with AGEs decreased significantly as compared to the cells treated with HSA (control, P<0.05). Under the same condition of AGEs exposure, the viability of the cells treated with gAd was greatly higher than that of the cells without gAd treatment (P<0.01). The apoptotic rate of HUVECs was significantly elevated by AGEs treatment vs HSA treatment observed by Annexin V-FITC/PI double staining analysis with flow cytometry (P<0.05). Under the condition of AGEs stimulation, the apoptosis of HUVECs was decreased by pretreatment with gAd as compared to that of the cells without gAd treatment (P<0.01). Measured by quantitative real time PCR, AGEs decreased the expression level of AdipoR1 mRNA and gAd increased the expression of AdipoR1 mRNA contrarily (P<0.05). CONCLUSION: AGEs increase the apoptotic rate of HUVECs in a concentration dependent manner and gAd promotes the AdipoR1 mRNA expression.
