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Polymorphonuclear leukocyte function during hemodialysis: relationship to complement activation.

A A Jacobs1, R A Ward, S R Wellhausen

  • 1Department of Medicine, University of Louisville, KY.

Nephron
|January 1, 1989
PubMed
Summary
This summary is machine-generated.

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Polymorphonuclear leukocytes (PMN) in hemodialysis patients show heightened H2O2 production before treatment. Dialysis-induced complement activation causes temporary leukopenia and increased CR3 expression, but doesn't further boost PMN H2O2 production.

Area of Science:

  • Immunology
  • Nephrology
  • Hematology

Background:

  • Polymorphonuclear leukocytes (PMN) play a crucial role in immune responses.
  • Hemodialysis is a vital treatment for end-stage renal disease.
  • Understanding PMN function during hemodialysis is important for patient care.

Purpose of the Study:

  • To investigate the functional status of PMN in hemodialysis patients.
  • To evaluate changes in phagocytosis, H2O2 production, and CR3 expression during hemodialysis.
  • To correlate these changes with plasma complement activation products (C3ades Arg and C5ades Arg).

Main Methods:

  • Flow microfluorometry was used to assess PMN functions.
  • Blood samples were collected from patients before, during, and after hemodialysis.

Related Experiment Videos

  • Plasma levels of C3ades Arg and C5ades Arg were measured.

    • Main Results:

    • Before hemodialysis, PMN showed increased basal and stimulated H2O2 production compared to controls.
    • During dialysis, complement activation led to transient leukopenia and increased CR3 expression.
    • No further increase in H2O2 production was observed during dialysis, despite complement activation.

    Conclusions:

    • PMN in hemodialysis patients are primed for an enhanced respiratory burst prior to treatment.
    • Dialysis-induced complement activation may contribute to leukopenia and altered PMN receptor expression.
    • The respiratory burst capacity of PMN is not further enhanced by complement activation during hemodialysis.