Efficacy of ellagic acid and sildenafil in diabetes-induced sexual dysfunction
Abstract
BACKGROUND: Diabetes induced sexual dysfunction is a leading cause of male sexual disorder and an early indicator of cardiovascular complication. Reactive oxygen species generated in body during diabetes is a main causative factor for erectile dysfunction, a sexual dysfunction. Adjuvant antioxidant therapy along with phosphodiesterases type 5 enzyme inhibitor (PDE5i) is more effective than PDE5i alone. OBJECTIVE: The aim of the study was to investigate efficacy of ellagic acid a known antioxidant and sildenafil in diabetes induced erectile dysfunction. MATERIALS AND METHODS: Type 1 diabetes was induced in male rats and rats were treated with ellagic acid (50 mg/kg, p.o.) and a combination of ellagic acid (50 mg/kg, p.o.) and sildenafil (5 mg/kg, p.o.), a PDE5i for 28 days. Sexual function was observed in diabetic rat and compared with those of treatment group and normal rats. Effect of ellagic acid was studied on advanced glycation end products (AGE) and isolated rat corpus cavernosum in vitro. RESULTS: Sexual function of diabetic rats was found to be reduced and ellegic acid treatment could preserve sexual function of diabetic rats to some extent. Ellagic acid + sildenafil treatment was more efficient in management of diabetes induced sexual dysfunction. Ellagic acid inhibited (AGE) in vitro implying its role in reducing oxidative stress in diabetes. The polyphenol could not increase sexual function in normal rats and relax isolated rat corpus cavernosum smooth muscle…
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