Nephroprotective effects of b-carotene on ACE gene expression, oxidative stress and antioxidant status in thioacetamide induced renal toxicity in rats

b-carotene is one of carotenoid natural pigments, which are produced by plants and are accountable for the bright colors of various fruits and vegetables. These pigments have been widely studied for their ability to prevent chronic diseases and toxicities. This study was designed to evaluate the effects of b-carotene on angiotensin converting enzyme (ACE) gene expression, oxidative stress and antioxidant status in thioacetamide induced renal toxicity. Total 24 albino wistar rats of male sex (200-250gm) were divided into 6 groups as Group-1: The control remained untreated; Group-2: Received thioacetamide (200mg/kg b.w; i.p) for 12 weeks; Group-3: Received b-carotene orally (200mg/kg b.w), for 24 weeks; and Group-4: Received thioacetamide (200mg/kg b.w; i.p) for 12 weeks + received b-carotene orally (200mg/kg b.w), for further 12 weeks. The expression of ACE gene in thioacetamide induced renal toxicity in rats as well as supplemented with b-carotene was investigated and compared their level with control groups by using the quantitative RT-PCR method. The ACE gene expression was significantly increase in TAA rats as compare to control rats specifies that TAA induced changes in ACE gene of kidney, elevated renal ACE has been correlated with increase hypertensive end organ renal damage. The quantity of ACE gene were diminish in our rats who received ?-Carotene after TAA is administered, for this reason they seemed to be defended against increased ACE levels in kidney bought by TAA. In pre- and post-treatment groups, we studied the role of ?-Carotene against thioacetamide in the kidney of Wistar rats. Experimental confirmation from our study illustrates that ?-Carotene can certainly work as a successful radical-trapping antioxidant our results proved that TAA injury increased lipid peroxidation and diminish antioxidant GSH, SOD and CAT in renal tissue. Since ?-Carotene administration recover renal lipid peroxidation and antioxidants, it give the impression that ?-Carotene protects renal tissue against thioacetamide-induced oxidative damage.