EFFECT OF PURSLANE (PORTULACA OLERACEA) ON RENAL ISCHEMIA/REPERFUSION INJURY IN RAT
Keywords:
Purslane, IR injury, Renal function, Antioxidant, RatAbstract
Objective: Use of herbal medicines has increased in recent years and many researches show their values in the treatment and prevention of diseases. In several studies, antioxidant properties of purslane (PO) were demonstrated. The aim of the present study was to investigate the effect of ethanolic extract of PO (EEPO) on the renal function and antioxidant status after induction of ischemia reperfusion (I/R) injury in the rat kidney.
Methods: 30 male Wistar rats were divided into 5 groups (n=6): sham operated+ vehicle (sham), sham operated+ EEPO 300mg/kg (control), I/R, I/R+ EEPO 150 and 300 mg/kg. Unilateral nephrectomy was performed in all animals, 20 days before the experiment. PO extract or vehicle was administered for 5 days, So that the last dose was administered a half hour before induction of the left kidney I/R (45 min ischemia /24 h reperfusion). At the end of reperfusion period, blood and renal tissue samples were obtained for the serum urea and creatinine (Scr) measurements as well as the tissue antioxidant assays.
Results: Induction of I/R and pretreatment with PO extract, increased the level of superoxide dismutase (SOD). There were no significant changes in the levels of MDA, GSH and FRAP among different groups. On the other hand the Scr and serum urea of the I/R and treated groups were elevated compared to the sham group.
Conclusion: Purslane did not strongly affect the renal antioxidant status and could not prevent the renal injury following I/R. Probable reason might be the stimulation of immune system by the PO extract.
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