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The glomerular peripolar cell--an immunohistochemical study.

D S Gardiner1, G B Lindop

  • 1University Department of Pathology, Western Infirmary, Glasgow, Scotland.

APMIS : Acta Pathologica, Microbiologica, Et Immunologica Scandinavica
|February 1, 1992
PubMed
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Peripolar cells, a novel glomerular cell type, absorb plasma proteins from kidney filtrate. Their specific markers and function within the juxtaglomerular apparatus remain under investigation.

Area of Science:

  • Nephrology
  • Glomerular Biology
  • Cell Biology

Background:

  • The peripolar cell is a recently identified glomerular epithelial cell.
  • Its potential role as a secretory component of the juxtaglomerular apparatus (JGA) is unknown.

Purpose of the Study:

  • To identify immunohistochemical markers specific for peripolar cells.
  • To determine the composition of peripolar cell cytoplasmic granules.

Main Methods:

  • Immunohistochemical analysis of normal human and sheep kidney tissue.
  • Utilized monoclonal antibodies and antisera for cell identification.
  • Investigated cytoplasmic granule contents.

Main Results:

  • A subset of peripolar cells exhibited vimentin immunoreactivity; other intermediate filaments were negative.

Related Experiment Videos

  • Neuroendocrine markers were not detected in peripolar cells.
  • Peripolar cell granules contained various plasma proteins, excluding IgM.

    • Conclusions:

    • Peripolar cells likely absorb plasma proteins from the glomerular filtrate.
    • The precise function of peripolar cells remains uncertain.
    • Their location suggests a specialized role at the kidney's vascular pole.