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  • Title: [Ad-hVEGF165 reverses homocysteine-induced endothelial dysfunction by regulating nitric oxide system].
    Author: Zhao L, Mao Y, Zhang Y, Shi Y, Song Y.
    Journal: Zhonghua Xin Xue Guan Bing Za Zhi; 2015 May; 43(5):432-6. PubMed ID: 26419990.
    Abstract:
    OBJECTIVE: To investigate the therapeutic effect of Ad-hVEGF165 on the endothelial cells dysfunction induced by homocysteine (Hcy) and related molecular mechanisms. METHODS: Human umbilical vein endothelial cells CRL-1730 were treated with Hcy at different concentrations (0, 0.05, 1.00 mmol/L) for 24 h. The same concentration of Hcy, Ad-Track and Ad-hVEGF165 were added to the cells in the following groups: blank group, Hcy0.05 group, Hcy1.00 group, Ad-Track group, Hcy0.05+Ad-Track group, Hcy1.00+Ad-Track group, Ad-hVEGF165 group, Hcy0.05+Ad-hVEGF165 group, Hcy1.00+ Ad-hVEGF165 group for 48 h. The mRNA and protein expressions of eNOS and DDAH2 were detected by real-time PCR and Western blot. The correlations of mRNA and protein expressions between endothelial nitric oxide synthase (eNOS) and dimethylarginine dimthylaminohydrolase (DDAH)2 were evaluated by Pearson correlation analysis. RESULTS: Compared with blank group and Ad-hVEGF165 group, the mRNA and protein expressions of eNOS were decreased in Hcy0.05 group and Hcy0.05+Ad-hVEGF165 group (both P < 0.05), and the mRNA and protein expressions of DDAH2 in cells treated with 0.05 mmol/L and 1.00 mmol/L Hcy were reduced as well (all P < 0.05). DDAH2 mRNA and protein expression are increased (all P < 0.05) in Ad-hVEGF165 group compared with the blank group and Ad-Track, Hcy0.05 + Ad-hVEGF165 and Hcy0.05 group compared with Hcy0.05+Ad-Track group, Hcy1.00+Ad-hVEGF165 and Hcy1.00 group compared with Hcy1.00+Ad-Track group. The mRNA and protein expressions of eNOS and DDAH2 were uncorrelated under the effect of Hcy (r = 0.057 and 0.449, both P > 0.05) and VEGF (r = 0.284 and 0.432, both P > 0.05). CONCLUSION: Recombinant adenovirus Ad-hVEGF165 could reverse Hcy-induced endothelial cells dysfunction via upregulating the expressions of eNOS and DDAH2.
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