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Objective: To investigate the protective effects of grape seed proanthocyanidin extracts (GSPE) against CoCl2-induced hypoxic injury in cultured RGC-5 cells.
Methods: CoCl2(400 μmol/L) was used to induce hypoxic injury in cultured RGC-5 cells; the cells were pretreated with 0,100,200,400 and 800μmol/L GSPE for 24h. The cell viability was assayed by MTT; the apoptosis was detected by Hoechst 33342 staining; the intracellular reactive oxygen species (ROS) was measured by H2DCFDA oxidative reaction. The mRNA expression of Bcl-2, caspase 9 and caspase 3 was determined by real-time PCR.
Results: Compared to hypoxic control group, pretreatment with GSPE significantly increased viability of RGC-5 cells (P<0.001), reduced cell apoptosis (P<0 .001) and intracellular ROS(P <0 .001). In addition, GSPE significantly increased the mRNA expression of Bcl-2(P<0 .001) and decreased mRNA expression of caspase 9(P<0 .001) and caspase 3(P<0 .001) compared to hypoxic control group.
Conclusion: GSPE may have a protective effect against CoCl2-induced hypoxic injury in cultured RGC-5 cells. The decrease of intercellular ROS, up-regulation of Bcl-2 and down-regulation of caspase 9 and caspase 3 may be involved in the mechanism of the protective effect of GSPE.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10397062 | PMC |
| http://dx.doi.org/10.3785/j.issn.1008-9292.2015.01.004 | DOI Listing |
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