Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/199347
Type: Artigo de periódico
Title: Ejaculatory Dysfunction In Streptozotocin-induced Diabetic Rats: The Role Of Testosterone.
Author: Pontes, Davi A
Fernandes, Glaura S A
Piffer, Renata C
Gerardin, Daniela C C
Pereira, Oduvaldo C M
Kempinas, Wilma G
Abstract: Hyperglycemic and hypoinsulinemic states caused by diabetes mellitus are usually related to some type of sexual dysfunction, resulting in infertility in humans and experimental models, mostly due to their effects on ejaculatory function. This study aimed to evaluate the possible role of testosterone in the restoration of normal ejaculatory function in diabetic rats. Male Wistar rats were randomly allocated into 3 experimental groups: control, diabetic (streptozotocin), and diabetic with testosterone supplementation (streptozotocin plus testosterone). The following parameters were assessed at the end of the experiment: body weight, circulating testosterone levels, number of spermatozoa ejaculated in the uterus through natural mating, and weight and in vitro isometric contractions of the vas deferens. Diabetic rats showed reduced plasma testosterone levels and ejaculatory dysfunction as observed by a lack in the spermatozoa ejaculated into the uterus of receptive females. In these diabetic rats, no difference was observed in the sensitivity of the vas deferens to norepinephrine, with or without the presence of the cocktail (cocaine plus propranolol). In spite of this, an increased sensitivity to methoxamine through the α1-adrenoceptor was observed. Testosterone supplementation did not restore these parameters to control values.We conclude that, in this experimental model, the lack of testosterone was not directly related to the diabetes-induced ejaculatory dysfunction.
Subject: Androgens
Animals
Body Weight
Cocaine
Diabetes Mellitus, Experimental
Ejaculation
Female
Male
Norepinephrine
Propranolol
Random Allocation
Rats
Rats, Wistar
Sexual Dysfunction, Physiological
Spermatozoa
Streptozocin
Testosterone
Rights: fechado
Identifier DOI: 
Address: http://www.ncbi.nlm.nih.gov/pubmed/21441620
Date Issue: 2011
Appears in Collections:Unicamp - Artigos e Outros Documentos

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