PMID: 8972786Dec 1, 1996Paper

Comparative ureteral microanatomy

Journal of Endourology
J Stuart WolfR V Clayman

Abstract

Several animals have been used as models for experimental upper urinary tract surgery. Although minipigs have recently gained favor because their upper urinary tract is grossly similar to that of humans, the ureteral microanatomic features of the two species have not been compared. We evaluated the histologic features of human and animal ureters in order to provide addition information regarding experimental models for upper urinary tract surgery. Cross-sections of upper, middle, and lower ureteral segments from human autopsy specimens and animals (farm pig, minipig, dog, sheep, rabbit, and rat) were evaluated after preparation with Masson's trichrome stain. Morphology, computer-assisted morphometry, linear micrometry, and point-count estimation of smooth muscle/connective tissue ratios were assessed. The epithelium was remarkably consistent across all species, both morphologically and in terms of absolute size. The lamina propria was highly vascularized in all species, but the compactness varied with the overall ureteral dimensions. In the muscularis, the relative size and the percentage composed of smooth muscle differed widely among species, as did the ratio of muscularis to lamina propria cross-sectional surface area. Among...Continue Reading

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Citations

Dec 10, 2002·Journal of Endourology·Costas D LallasGlenn M Preminger
Aug 30, 2008·Journal of Endourology·Jonathan A EandiRoger K Low
Jun 10, 2016·Mathematical Medicine and Biology : a Journal of the IMA·Ioannis SgouralisAnita T Layton
Jul 8, 2016·American Journal of Physiology. Regulatory, Integrative and Comparative Physiology·Ioannis SgouralisRoger G Evans
Mar 30, 2019·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·Dimitrios P Sokolis
Jan 28, 2021·Acta Cirúrgica Brasileira·Jacob Hindrik Antunes SmitAdenauer Marinho de Oliveira Góes Junior
Aug 31, 2021·American Journal of Physiology. Renal Physiology·Chang-Joon LeeDavid W Smith

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