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Master's Dissertation
DOI
https://doi.org/10.11606/D.10.2006.tde-28022007-151325
Document
Author
Full name
Marcia Cury Cioffi
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2006
Supervisor
Committee
Barnabe, Renato Campanarut (President)
Bondan, Eduardo Fernandes
Gacek, Francisco
Title in Portuguese
Efeitos do diabetes mellitus sobre a função testicular de ratos Wistar
Keywords in Portuguese
diabetes
espermatogênese
estreptozotocina
inibina
testosterona
Abstract in Portuguese
Utilizaram-se 27 ratos Wistar, machos com 98 dias de idade, originados do Biotério da FMVZ-USP, com o objetivo de avaliar os possíveis efeitos do diabetes mellitus, sobre a função reprodutiva relacionada ao macho.Os animais foram divididos em três grupos, grupo A (GA) constituído de 10 animais sadios, grupo B (GB) constituído de oito ratos Wistar, com diabetes mellitus induzida quimicamente através da administração intraperitonial de estreptozotocina (65mg/Kg) e grupo C (GC) constituído por nove animais com diabetes mellitus induzida quimicamente pela administração intraperitonial de estreptozotocina (65mg/Kg), associada a insulinoterapia (3UI/rato por dia). Após quatro dias da administração da droga (GB e GC), os animais pertencentes ao grupo C (GC) receberam insulinoterapia (três IU/rato/dia) durante 42 dias. No final do experimento (46 dias após a administração da estreptozotocina), os animais foram sacrificados e foram observados os seguintes resultados; O diabetes mellitus leva ao aumento da glicemia, diminuição do peso corpóreo, diminuição do peso e tamanho testicular, diminuição das concentrações séricas de testosterona e FSH. Porém através da avaliação dos níveis séricos de inibina B, foi constatado que o diabetes não promove nem redução, nem aumento das concentrações séricas desse hormônio. Conclui-se também que a reposição exógena de insulina foi capaz de impedir a diminuição do peso corporal, redução do peso testicular, diminuição dos níveis de testosterona e FSH, porém apesar da insulinoterapia ter impedido a diminuição do peso corpóreo, não foi capaz de proporcionar o mesmo desenvolvimento corporal observado nos animais controle.
Title in English
Study of the diabetes mellitus on testicular function of Wistar rat
Keywords in English
diabetes
inhibin
spermatogenesis
streptozotocin
testosterone
Abstract in English
The objective of the present experiment was to evaluate the possible effect of diabetes mellitus, on the reproductive function in male rats. Towards this end, 27 male Wistar rats (98 days old), housed at the FMVZ-USP animal holding facility, were randomly assigned into three groups: Group A (GA) consisting of 10 healthy animals; Group B(GB) consisting of eight Wistar rats, with diabetes mellitus chemically induced through the intraperitoneal administration of estreptozotocin (65mg/Kg); and C group (GC) constituted by nine animals with diabetes mellitus chemically induced by the intraperitoneal administration of estreptozotocin (65mg/Kg), associate to an insulin treatment (3IU/rat per day for 42 days) that begun 4 days after the streptozotocin administration. Animals were euthanized 46 days after the administration of the estreptozotocin and the following results were obtained: diabetes mellitus led to an increase of the glicemia, reduction of the corporeal weight, decreased testicular wheight, serum concentrations of testosterone and FSH. No effect of diabeted were found for the serum levels of inhibin B. Results suggested that the exogen replacement of insulin was capable of hindering the reduction on corporal weight, reduction of testicular weight and reduction of the testosterone levels and FSH. On the other hand despite the fact that insulin treatament was capable of avoiding the reduction on bofy weight, it was not capable to provide similar body development observed in the normal animals.
 
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Publishing Date
2007-03-01
 
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