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  • Title: Does a Ureteral Obstruction Affect the Contralateral Kidney Morphology? A Stereological Analysis in a Rodent Model.
    Author: Assumção RF, Pereira-Sampaio MA, Sampaio FJB, de Souza DB.
    Journal: Urol Int; 2018; 100(3):327-332. PubMed ID: 29421794.
    Abstract:
    OBJECTIVE: To investigate, in a rodent model, the influence of an obstructed kidney/ureter on the contralateral organ morphology. METHODS: Thirty-six rats were randomly assigned into the following groups: untreated ureteral obstruction group (UO-U, n = 10), submitted to a ligature of the ureter at day 0; UO group (at day 0) followed by nephrectomy after 24 h (UO-N, n = 8); nephrectomy group (N, n = 9), submitted to nephrectomy at day 0; and sham group (S, n = 9), submitted to simulated surgery at day 0. All these procedures were performed on the left kidney/ureter. All animals were euthanized 30 days after surgery, and the right kidneys were collected for stereological analysis. Data were compared using a one-way analysis of variance with Bonferroni's post test, considering p < 0.05 as significant. RESULTS: The kidney volume, weight, and cortical volume were augmented in groups UO-N and N, compared to group S. Kidneys from the UO-U group showed only a moderate augmentation in kidney weight, with a reduction in the cortical-medullar ratio, compared to the kidneys in group S. No differences in the glomerular volumetric density, volume-weighted glomerular volume, and number of glomeruli were observed among the right kidneys of the studied groups. CONCLUSION: An obstructed kidney/ureter is more prejudicial to the contralateral kidney morphology than an absent kidney.
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