Penile alterations at early stage of type 1 diabetes in rats
Int. braz. j. urol
; 43(4): 753-761, July-Aug. 2017. tab, graf
Artigo
em Inglês
| LILACS
| ID: biblio-892855
Biblioteca responsável:
BR1.1
ABSTRACT
ABSTRACT Objective Diabetes affects the erectile function significantly. However, the penile alterations in the early stage of diabetes in experimental animal models have not been well studied. We examined the changes of the penis and its main erectile components in diabetic rats. Materials and methods Male Sprague-Dawley rats were divided into 2 groups streptozotocin (STZ)-induced diabetics and age-matched controls. Three or nine weeks after diabetes induction, the penis was removed for immunohistochemical staining of smooth muscle and neuronal nitric oxide synthase (nNOS) in midshaft penile tissues. The cross-sectional areas of the whole midshaft penis and the corpora cavernosa were quantified. The smooth muscle in the corpora cavernosa and nNOS in the dorsal nerves were quantified. Results The weight, but not the length, of the penis was lower in diabetics. The cross-sectional areas of the total midshaft penis and the corpora cavernosa were lower in diabetic rats compared with controls 9 weeks, but not 3 weeks after diabetes induction. The cross-sectional area of smooth muscle in the corpora cavernosa as percentage of the overall area of the corpora cavernosa was lower in diabetic rats than in controls 9 weeks, but not 3 weeks after diabetes induction. Percentage change of nNOS in dorsal nerves was similar at 3 weeks, and has a decreased trend at 9 weeks in diabetic rats compared with controls. Conclusions Diabetes causes temporal alterations in the penis, and the significant changes in STZ rat model begin 3-9 weeks after induction. Further studies on the reversibility of the observed changes are warranted.
Texto completo:
Disponível
Coleções:
Bases de dados internacionais
Base de dados:
LILACS
Assunto principal:
Pênis
/
Diabetes Mellitus Experimental
/
Diabetes Mellitus Tipo 1
/
Disfunção Erétil
/
Músculo Liso
Limite:
Animais
Idioma:
Inglês
Revista:
Int. braz. j. urol
Assunto da revista:
Urologia
Ano de publicação:
2017
Tipo de documento:
Artigo
País de afiliação:
Estados Unidos
Instituição/País de afiliação:
Case Western Reserve University/US