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  • Title: Peripolar cells and other granulated epithelial cells in renal biopsies.
    Author: Gardiner DS, More IA, Lindop GB.
    Journal: APMIS; 1992 Aug; 100(8):701-8. PubMed ID: 1520482.
    Abstract:
    The peripolar cell is a recently described glomerular epithelial cell which is situated within Bowman's capsule at the vascular pole. It contains cytoplasmic granules which contain plasma proteins, although it may also have a secretory function. The relationship between peripolar cells, other granulated glomerular epithelial cells and tubular epithelial cells is unclear. We have studied 242 biopsies from 19 types of renal disease for peripolar cells, other granulated epithelial cells and granulated tubular epithelial cells. Peripolar cells were most numerous in mesangioproliferative glomerulonephritis, IgA nephropathy, focal segmental glomerulosclerosis, membranous glomerulonephritis and lupus nephropathy. Other granulated glomerular epithelial cells were most prominent in diffuse lupus nephropathy, focal glomerulonephritis, acute vascular transplant rejection, crescentic glomerulonephritis and mesangioproliferative glomerulonephritis. Granulation of the tubular epithelium was most prominent in minimal change nephrotic syndrome and amyloidosis. It is likely that the granules in tubular epithelial cells represent lysosomes containing plasma proteins which have been absorbed from the tubular fluid. However, granulation of glomerular cells may represent a more specific response to glomerular damage. In addition, peripolar cells are prominent in only certain diseases, suggesting a specialized function.
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