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Immune deficiency in uremia: interleukin-2 production and responsiveness and interleukin-2 receptor expression and

D Donati1, D Degiannis, L Homer

  • 1Department of Pathology, UMDNJ-Robert Wood Johnson Medical School, Piscataway.

Nephron
|January 11, 1991
PubMed

Insights

Hemodialysis patients show reduced lymphocyte response due to high soluble interleukin-2 receptor (sIL-2R) levels. This elevation in sIL-2R may impair immune function in end-stage renal disease.

Area of Science:

  • Immunology
  • Nephrology
  • Biochemistry

Background:

  • Hemodialysis patients exhibit impaired in vitro lymphocyte responsiveness.
  • This immune dysfunction is a characteristic feature in end-stage renal disease (ESRD).

Purpose of the Study:

  • To investigate the role of interleukin-2 (IL-2) and its receptors in the compromised lymphocyte response of hemodialysis patients.
  • To explore the potential link between soluble IL-2 receptor (sIL-2R) levels and immune impairment in ESRD.

Main Methods:

  • Assessed lymphocyte proliferation and IL-2 production in hemodialysis patients and controls.
  • Measured IL-2 receptor expression and response to exogenous IL-2 in vitro.
  • Quantified plasma levels of soluble IL-2 receptor (sIL-2R) in various ESRD patient groups.

Main Results:

  • Hemodialysis patients displayed significantly reduced T and B lymphocyte proliferation.
  • While IL-2 production and IL-2 receptor expression were similar, uremic lymphocytes showed depressed response to exogenous IL-2.
  • Plasma sIL-2R levels were markedly elevated in hemodialysis patients and other ESRD groups, correlating positively with hemodialysis duration.

Conclusions:

  • Elevated plasma sIL-2R levels in hemodialysis patients may contribute to impaired lymphocyte function.
  • Increased sIL-2R could be a key factor in the progressive immune deficiency observed in ESRD.
  • The findings suggest sIL-2R plays a significant role in the pathogenesis of uremic immune dysfunction.

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