Preparations of intravenous immunoglobulins diminish the number and proinflammatory response of CD14+CD16++ monocytes in common variable immunodeficiency (CVID) patients

Clin Immunol. 2011 May;139(2):122-32. doi: 10.1016/j.clim.2011.01.002. Epub 2011 Jan 15.

Abstract

We have studied the effect of intravenous immunoglobulins (IVIG) on monocyte subpopulations and cytokine production in patients with CVID. The absolute number of CD14(+)CD16(++) monocytes decreased on average 2.5-fold 4h after IVIG and after 20h returned to the baseline. The cytokine level in the supernatants of peripheral blood mononuclear cells (PBMC) after ex vivo LPS stimulation demonstrated the >2-fold decrease in TNF production 4h after IVIG. The TNF expression, which is higher in the CD14(+)CD16(++) monocytes, was decreased in these cells by IVIG in 4/7 CVID cases. In vitro exposure of the healthy individuals' monocytes to the IVIG preparation resulted in reduced TNF production, which was overcome by blockade of the FcγRIIB in the CD14(+)CD16(++) CD32B(high) monocytes. Our data suggest that reduction in the number of CD14(+)CD16(++) monocytes and the blockade of their cytokine production via triggering CD32B can contribute to the anti-inflammatory action of IVIG.

Publication types

  • Clinical Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Antibodies, Monoclonal / pharmacology
  • Antigens, CD / metabolism
  • Common Variable Immunodeficiency / therapy*
  • Female
  • GPI-Linked Proteins / metabolism
  • HLA-DR Antigens / metabolism
  • Humans
  • Immunoglobulins, Intravenous / pharmacology*
  • Immunoglobulins, Intravenous / therapeutic use
  • Immunophenotyping
  • Interleukin-10 / metabolism
  • Interleukin-12 / metabolism
  • Kinetics
  • Leukocyte Count
  • Leukocytes, Mononuclear / drug effects
  • Leukocytes, Mononuclear / metabolism
  • Lipopolysaccharide Receptors / metabolism*
  • Lipopolysaccharides / pharmacology
  • Male
  • Middle Aged
  • Monocytes / cytology
  • Monocytes / drug effects*
  • Monocytes / immunology
  • Monocytes / metabolism
  • Receptors, IgG / immunology
  • Receptors, IgG / metabolism*
  • Tumor Necrosis Factor-alpha / metabolism
  • Young Adult

Substances

  • Antibodies, Monoclonal
  • Antigens, CD
  • FCGR3B protein, human
  • Fc gamma receptor IIB
  • GPI-Linked Proteins
  • HLA-DR Antigens
  • IL10 protein, human
  • Immunoglobulins, Intravenous
  • Lipopolysaccharide Receptors
  • Lipopolysaccharides
  • Receptors, IgG
  • Tumor Necrosis Factor-alpha
  • Interleukin-10
  • Interleukin-12