Alterações testiculaes no diabetes aloxânico no rato: estudo morfométrico e ultraestrutural dos túbulos seminíferos
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Data
2011-02-07
Autores
Trindade, Amélia Arcângela Teixeira [UNESP]
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Editor
Universidade Estadual Paulista (Unesp)
Resumo
Este estudo foi realizado com o objetivo de avaliar, no longo prazo, os parâmetros morfométricos e ultraestruturais dos tubulos seminíferos dos testículos de ratos diabéticos aloxânicos. 60 ratos Wistar, machos, pesando de 250 a 280 gramas foram divididos em 2 grupos experimentais: N ou grupo normal, constituído de 30 animais sadios, nãodaibéticos; D ou grupo diabético, constituído de 30 animais diabéticos sem qualquer tratamento da doença. Cada grupo experimental foi posteriormente dividido, por sorteio, em 3 subgrupos de ratos, com 10 animais cada um, para serem avaliados e sacrificados com 1, 6 e 12 meses de seguimento. O diabetes experimental foi induzido pela administração endovenosa de aloxana 2%, na dose de 42 mg/kg de peso corporal. Somente animais com sinais clínicos evidentes de diabetes grave e com glicemia >250 mg/dl e glicose urinária > 3000 mg/dl foram utilizados neste experimento. Com 1, 6 e 12 meses de seguimento o peso corporal, a ingestão hídrica, a ingestão alimentar, a diurese e os níveis de glicose sanguínea foram avaliados em todos os animais. Com 1 e 6 meses de seguimento também foram analisados os níveis de insulina plasmática, hemoglobina glicosilada (HbA1C) e de testosterona sérica Após os sacrifício dos animais, ambos os testículos foram removidos, sendo o testículo esquerdo preparado para a microscopia ótica e o direito para a microscopia eletrônica. As medidas morfométricas à M.O. e M.E. foram realizadas por análise digital de imagens utilizando o software Quin Lite 2.5 - LEICA . A ultraestrutura dos túbulos seminíferos foi analisada ao microscópio de transmissão PHILIPS, pela análise descritiva comparativa. Neste experimento foram analisados os seguintes parâmetros: a) área total dos túbulos seminíferos; b) espessura do epitélio tubular; c) área do lúmen tubular; d) espessura do epitélio germinativo; e) porcentagem...
This study was conducted to evaluate, in the long term, ultrastructural and morphometric parameters of seminiferous tubules of the testis of diabetic rats alloxan. 60 male Wistar rats weighing 250-280 grams were divided into two groups: group N or normal, consisting of 30 healthy animals, non-daibetics; D or diabetic group, consisting of 30 diabetic animals without in treatment. Each experimental group was then divided in three subgroups of rats with 10 animals each to be evaluated and sacrificed at 1, 6 and 12 months of follow-up. Experimental diabetes was induced by intravenous administration of alloxan 2% at a dose of 42 mg / kg body weight. Only animals with obvious signs of severe diabetes and blood glucose> 250 mg / dl and urine glucose> 3000 mg / dl were used in this experiment. At 1, 6 and 12 months of follow-up body weight, water intake, food intake, diuresis and blood glucose levels were evaluated in all animals. At 1 and 6 months of follow-up were also analyzed the levels of plasma insulin, glycosylated hemoglobin (HbA1C) and serum testosterone after the animal sacrifice, both testis were removed, the left was prepared for light microscopy and the right to the electron microscopy. Morphometric measures at M.Ö. and ME were performed by using digital image analysis software Quin Lite 2.5 - LEICA. The ultrastructure of the seminiferous tubules was analyzed by transmission microscope PHILIPS, by comparative descriptive analysis. In this experiment we analyzed the following parameters: a) total area of seminiferous tubules, b) epithelium area, c) lumen area, d) thickness of the germinal epithelium, e) percentage of tubular lumen or proportion of lumen area in relation to the total area, f) percentage of epithelium or proportion of epithelium area in relation to the total area; g) number of tubules per mm2. The results of clinical and laboratory parameters... (Complete abstract click electronic access below)
This study was conducted to evaluate, in the long term, ultrastructural and morphometric parameters of seminiferous tubules of the testis of diabetic rats alloxan. 60 male Wistar rats weighing 250-280 grams were divided into two groups: group N or normal, consisting of 30 healthy animals, non-daibetics; D or diabetic group, consisting of 30 diabetic animals without in treatment. Each experimental group was then divided in three subgroups of rats with 10 animals each to be evaluated and sacrificed at 1, 6 and 12 months of follow-up. Experimental diabetes was induced by intravenous administration of alloxan 2% at a dose of 42 mg / kg body weight. Only animals with obvious signs of severe diabetes and blood glucose> 250 mg / dl and urine glucose> 3000 mg / dl were used in this experiment. At 1, 6 and 12 months of follow-up body weight, water intake, food intake, diuresis and blood glucose levels were evaluated in all animals. At 1 and 6 months of follow-up were also analyzed the levels of plasma insulin, glycosylated hemoglobin (HbA1C) and serum testosterone after the animal sacrifice, both testis were removed, the left was prepared for light microscopy and the right to the electron microscopy. Morphometric measures at M.Ö. and ME were performed by using digital image analysis software Quin Lite 2.5 - LEICA. The ultrastructure of the seminiferous tubules was analyzed by transmission microscope PHILIPS, by comparative descriptive analysis. In this experiment we analyzed the following parameters: a) total area of seminiferous tubules, b) epithelium area, c) lumen area, d) thickness of the germinal epithelium, e) percentage of tubular lumen or proportion of lumen area in relation to the total area, f) percentage of epithelium or proportion of epithelium area in relation to the total area; g) number of tubules per mm2. The results of clinical and laboratory parameters... (Complete abstract click electronic access below)
Descrição
Palavras-chave
Diabetes - Efeitos experimentais, Testiculos, Morphometry
Como citar
TRINDADE, Amélia Arcângela Teixeira. Alterações testiculaes no diabetes aloxânico no rato: estudo morfométrico e ultraestrutural dos túbulos seminíferos. 2011. 70 f. Tese (doutorado) - Universidade Estadual Paulista, Faculdade de Medicina de Botucatu, 2011.