Modelo experimental de obstrução ureteral em coelhos / Experimental model of ureteral obstruction in rabbits

AUTOR(ES)

Rodolfo Otávio Tomaz Bertti

FONTE

IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia

DATA DE PUBLICAÇÃO

21/12/2011

RESUMO

The stenosis of the ureteropelvic junction (UPJ) is one of the most frequent congenital anomalies and are clinically important to be treated not only for the quality of life that gets worse, pain and urinary tract infection, but also the loss of the kidney function (1,2,3). So, the study of UPJ model will be used for future treatment. The aim of this study was to create an experimental model of ureteral obstruction in rabbits. The sample of this project was composed by a number of ten female rabbits from New Zealand, three months old, weighing about 3.5kg. An intra-peritoneal medium laparatomy was made, pushing the abdominal organs in order to have a large access to the retroperitoneal. The studies consist of creating an experimental ureteral obstruction model through the introduction of its segment inside the psoas ipsilateral muscle in a standard way. The right side was used as the control. After one month, the rabbits were underwent the intravenous injection of 99mTc-DTPA. After the diuretic renogram analysis was realized, the animal was sacrificed end the removed parts, kidneys and ureters were submited histological analysis. The study showed that seven left kidneys presented obstruction. The excretion after furosemide injection was 1 ± 74% for 99mTc-DTPA, with a statistically significant difference between both renal (p<0.05). In the anatomopathological study, two animals were classified as light and seven as moderate obstruction, characterizing diagnosis of obstruction in nine rabbits (90%). The lack of an inflammatory process and fibrosis in the circumvolution location was observed. The experimental technique of ureteral obstruction created a model of hydronephrosis in rabbits.

ASSUNTO(S)

hidronefrose modelos animais medicina nuclear patologia clínica hydronephrosis models animal nuclear medicine pathology clinical

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