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Research Paper Open Access
Renal ischemia reperfusion injury contributes patho-physiological imbalance of acute renal failure that comprises of generation of reactive oxygen species, nitric oxide and peroxynitrite and inflammation involving cytokine/adhesion molecule cascade, finally leads to cell death. Oxygen deprival associated with ischemia that in turn lead to decline ATP production is the characteristic feature usually addressed in the development of in vitro cell based ischemic model. In order to create oxygen deficit in the cell lines different approaches like chemical induction, enzymatic induction and anaerobic chamber models are widely used. However efficiencies of these models were varied and the present study was aimed to compare the suitability of these models in creating in vitro ischemia reperfusion in cell culture. In the chemical induced method we used different concentrations of rotenone, antimycin and sodium azide to inhibit electron transport chain and thereby reduced the ATP production, measured indirectly by cell viability assay. Among the chemical induced model, antimycin mediated cell injury was more reliable for ischemia reperfusion study. In the enzymatic model, comprises of glucose oxidase (3mM/s) and catalase (998 s -1 at 10:1 ratio) was used and found to be best among the three approaches as it can create injury in short experimental time and are reproducible. However anaerobic chamber method was not suitable for ischemia reperfusion study as it need more time to induce significant cell injury.
Renal ischemia reperfusion, LLC PK1, Rotenone, antimycin, enzymatic hypoxia, hydrogen sulfide