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Hepatitis C patients on maintenance hemodialysis show complex immune disturbances in the peripheral blood

Masaaki Shiina1, Koju Kobayashi, Kazumasa Hiroishi

  • 11 Department of Gastroenterology and Hepatology, Shin-Yurigaoka General Hospital , Kawasaki, Japan .

Viral Immunology
|September 12, 2013
PubMed

Insights

Hepatitis C virus (HCV) infection impairs innate immunity in hemodialysis patients. Chronic HCV affects natural killer cells and monocytes, independent of hemodialysis, impacting patient survival.

Area of Science:

  • Immunology
  • Virology
  • Nephrology

Background:

  • Hepatitis C virus (HCV) infection is common in hemodialysis (HD) patients, affecting survival.
  • Both HCV and HD are associated with impaired innate immunity.
  • Antiviral treatment options for HCV in HD patients are limited.

Purpose of the Study:

  • To compare peripheral immunologic features in patients with maintenance hemodialysis and/or HCV infection.
  • To investigate the impact of chronic HCV infection on innate immunity in the context of hemodialysis.

Main Methods:

  • Analysis of peripheral blood mononuclear cells (PBMCs) from 30 subjects in four groups (HD, HCV, HD+HCV, controls).
  • Flow cytometry to analyze Natural Killer (NK) cell subsets and activation status (CD69 expression).
  • Cytokine production (Interferon-gamma, Tumor Necrosis Factor-alpha) measured via culture supernatant and single-cell analysis.

Main Results:

  • HCV-infected HD patients showed a decreased CD56(dim) NK cell subset but upregulated CD69 expression.
  • NK cells from both HCV-infected and uninfected HD patients exhibited poor response to LPS-induced Interferon-gamma and Tumor Necrosis Factor-alpha.
  • Tumor Necrosis Factor-alpha-producing monocytes were increased in HCV-infected HD patients compared to uninfected HD patients.

Conclusions:

  • Chronic HCV infection independently affects innate immunity, irrespective of hemodialysis.
  • Specific alterations in NK cell subsets and monocyte cytokine production are linked to HCV infection in HD patients.
  • Findings highlight the complex interplay between HCV, innate immunity, and hemodialysis.

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