Add time:09/01/2019         Source:sciencedirect.com

Considering the complementary mechanisms of SGLT2 inhibitors and angiotensin inhibitors on kidney, it is postulated that combination of both agents could afford greater protection against diabetic renal injury. So, we investigated renal protective effects of SGLT2 inhibitor, dapagliflozin, alone and in combination with Irbesartan (cas 138402-11-6) in a rat model of diabetic nephropathy. Diabetic rats, injected with nicotinamide-streptozotocin, were treated orally for 12 weeks with either vehicle, dapagliflozin 2 mg/kg/day, irbesartan 30 mg/kg/day, or combination of both drugs; respectively. Biochemical analysis included blood glucose, HbA1c, urinary albumin excretion, creatinine clearance, TGF-β1, sRAGE, oxidative markers, and histopathological examination of kidneys. Treatment with dapagliflozin, irbesartan, and especially their combination, produced significant reduction in albuminuria, improved renal function parameters, increased sRAGE level and improved inflammatory and oxidative markers, together with amelioration of renal histopathological changes. Beside glycemic control, dapagliflozin produced higher sRAGE levels than irbesartan, suggesting that inhibition of AGE-RAGE axis is important in its renoprotective action. Combination of dapagliflozin and irbesartan produced more remarkable protective effects on renal function and structure, than use of either agent alone. It is concluded that, combination of SGLT2 inhibitor, dapagliflozin and ARB, irbesartan could offer more effective renal protection and represent a promising therapeutic option for management of diabetic nephropathy.

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