The Favorable Effect of Empagliflozin on Erectile Function in an Experimental Model of Type 2 Diabetes
Abstract
INTRODUCTION: Following the results of the EMPA-REG Outcome trial, we hypothesized that empagliflozin, a highly potent and specific sodium/glucose cotransporteur 2 inhibitor, could improve type 2 diabetes mellitus (T2DM)-associated erectile dysfunction (ED), a highly prevalent complication of T2DM, very often coexisting with cardiovascular complications and considered as a prognostic factor of cardiovascular disease in men with diabetes.
AIM: To investigate the effects of chronic treatment with empagliflozin on ED in a T2DM rat model in the presence or absence of sildenafil.
METHODS: Male Goto-Kakizaki (GK), a model of T2DM, and age-matched Wistar rats received placebo or empagliflozin treatment at 25.3 ± 0.9 mg/kg/d for 4 weeks. Then, the in vivo effect of empagliflozin on erectile function was assessed by electrical stimulation of the cavernous nerve at different frequencies under anesthesia in the presence or absence of acute intravenous injection of sildenafil. Endothelium-dependent, -independent, and nitrergic relaxations of cavernosal strips from the rats were studied.
MAIN OUTCOME MEASURES: Body weight, food consumption, metabolic parameters, plasma inflammation biomarkers, and in vivo erectile responses elicited by electrical stimulation of the cavernous nerve in empagliflozin-treated and untreated GK rats and control Wistar rats were assessed and followed by concentration or frequency response curves to endothelium-dependent, -independent, and nitrergic relaxations…
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