Impact of diabetes on male sexual function in streptozotocin-induced diabetic rats: Protective role of soluble epoxide hydrolase inhibitor - 09/06/19

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Graphical abstract |
Highlights |
• | Administration of streptozotocin induces sexual dysfunction with a parallel decrease in the level of testosterone in rats. |
• | Treatment with the soluble epoxide hydrolase inhibitor, t-TUCB, attenuates sexual dysfunction in diabetic rat. |
• | Protective effect of t-TUCB on sexual function of diabetic rat was associated with a preservation of level of testosterone. |
• | Treatment with t-TUCB can be a novel approach for the management of diabetic sexual dysfunction. |
Abstract |
Diabetes-induced male sexual dysfunction is associated with endothelial dysfunction. Inhibition of soluble epoxide hydrolase (sEH) is known to improve endothelial function in diabetes. Therefore, we hypothesized that sEH inhibitor (sEHI), [trans-4-{4-[3-(4-trifluoromethoxyphenyl)-ureido]cyclohexyloxy}benzoic acid] / t-TUCB can restore the male sexual function in diabetic rat. After one week of administration of diabetogenic agent STZ (52 mg/kg i.p) injection, diabetic rats were treated with t-TUCB (0.1 and 0.3 mg/kg, p.o) or vehicle for 8 weeks. The sexual behaviour parameters of the animals were evaluated at the end of dosing period. The levels of testosterone and glucose in serum, and sperm were quantified. Effect of treatment on weight of reproductive organs and histopathology of penile tissue was evaluated. Diabetes had a negative effect on male sexual function, weight of sexual organs and production of sperm with a parallel decrease in the level of testosterone. The sEHI, t-TUCB, significantly preserved the sexual function and minimized an increase in the level of blood glucose in diabetic rats. It also prevented a decrease in the level of testosterone and sperm in diabetic rats, in comparison to diabetic control rats. Further, diabetes induced distortion of corpus cavernosum was attenuated by t-TUCB. Based on our findings, sEHI may delay the development of sexual dysfunction in diabetes.
Le texte complet de cet article est disponible en PDF.Keywords : Diabetes-induced sexual dysfunction, sEH inhibitor t-TUCB, Testosterone, Sperm count, Corpus cavernosum
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