Pentaclethra macrophylla leaves reduce blood glucose level, improve sexual behavior and modulate critical enzymes associated with diabetes-erectile dysfunction morbidity in rats.

Abstract

This research work studied the phenolic composition of Pentaclethra macrophylla (PM), the inclusion of dietary supplementation of PM leaves on sexual functions and its connection to inhibit enzymes (arginase and phosphodiesterase-5) and nitric oxide level, linked to type 2 diabetes-induced erectile dysfunction in rats. Gallic acid, chlorogenic and ellagic acids, Kaempferol, and epicatechin etc. was spotted with High performance liquid chromatography-diode array detector from PM extract. Twenty-five (25) rats were used for the study. Five rats were placed with basal diet; diets not supplemented with PM leaves (normal rat group) while twenty rats were made diabetic by feeding them with high fat diet for two weeks, prior to single injection with 35 mg/kg of streptozotocin (STZ). After checking with glucometer, experimental animals with blood glucose level >250 mg/dL were accepted as diabetic. The diabetic rats were subsequently divided into four groups of five rats each (n=5). The diabetic rats were placed on basal diet, or diets supplemented with PM leaves (10 % or 5 % inclusion) or sildenafil citrate (SC). The result revealed that PM supplemented diets caused significant (p<0.05) reduction in blood glucose level, and augmented erectile function by inhibiting arginase and PDE5 activities as well as enhancing nitric oxide level. In conclusion, dietary inclusion of PM leavescould serve as a potent nutraceutical source in hyperglycemia induced erectile dysfunction management.