Ultrastructural organization of the hamster renal pelvis

The American Journal of Anatomy
E R Lacy, B Schmidt-Nielsen

Abstract

The renal pelvis of the hamster has been studied by light microscopy (epoxy resin sections), transmission electron microscopy, and morphometric analysis of electron micrographs. Three morphologically distinct epithelia line the pelvis, and each covers a different zone of the kidney. A thin epithelium covering the outer medulla (OM) consists of two cell types: (1) granular cells are most numerous and have apically positioned granules which stain intensely with toluidine blue, are membrane-bound, and contain a fine particulate matter that stains light grey to black in electron micrographs. (2) Basal cells do not have granules, are confined to the basal lamina region, and do not reach the mucosal epithelial surface. The inner medulla (IM) is covered by a pelvic epithelium morphologically similar to collecting duct epithelium of IM. Some cells in this portion of the pelvic epithelium (IM) stain intensely dark with toluidine blue, osmium tetroxide, lead, and uranyl acetate. Transitional epithelium, which separates cortex (C) from pelvic urine, has an asymmetric luminal plasma membrane and discoid vesicles, each of which is similar to those previously observed in mammalian ureter and urinary bladder epithelia. Based on morphological ...Continue Reading

References

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Citations

Feb 1, 1987·Kidney International·B Schmidt-Nielsen
Oct 1, 1980·Kidney International·B Schmidt-NielsenL N Reinking
Nov 1, 2016·Artificial Cells, Nanomedicine, and Biotechnology·Alexandre Fabricio MartucciYara Marcondes Machado Castiglia
May 21, 2004·American Journal of Physiology. Cell Physiology·Natalia AbuladzeIra Kurtz
Mar 1, 1982·The American Journal of Anatomy·R Verani, R E Bulger
Aug 1, 1987·The American Journal of Physiology·S UchidaM Burg

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