Effect of Trimetazidine on Retinal Ischemia/Reperfusion Injury in Rats

Authors:
  • BKBahriye Kildaci
    Bahriye Kildaci
  • SMSevda Muftuoglu
    Sevda Muftuoglu
  • NCNur Cakar
    Nur Cakar
  • CYCem Yildirim
    Cem Yildirim
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Abstract
Purpose: To investigate the effect of trimetazidine (TMZ), an antioxidant agent, on the ischemia/reperfusion (I/R) injury in rat retina histopathologically. Methods: The retinal I/R model was carried out by the 4-vessel occlusion method on Wistar albino rats. Twenty-one rats were divided into 7 groups, each comprising 3 rats. The animals in groups 1, 2 and 3 underwent 30 min of ischemia + 4 h of reperfusion and were treated by the administration of saline, TMZ before reperfusion and TMZ before ischemia, respectively. The animals in groups 4, 5 and 6 underwent 90 min of ischemia + 4 h of reperfusion and were treated in the same way as those in groups 1, 2 and 3, respectively. The 7th group was sham operated. Results: Thirty and 90 min of ischemia followed by 4 h of reperfusion induced retinal injury in the rat retina. Histopathologically, the inner plexiform and inner nuclear layers were the most affected parts. TMZ was able to reduce almost all retinal I/R damage when administered before ischemia. A cytoprotective effect of TMZ was partly observed in those animals which were treated before reperfusion. Conclusion: TMZ seemed to have a protective effect against retinal I/R injury in rats.

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