Association of Toll-Like Cell Receptors TLR2 (p.Arg753GLN) and TLR4 (p.Asp299GLY) Polymorphisms with Indicators of General and Local Immunity in Patients with Atopic Dermatitis

J Immunol Res. 2017:2017:8493545. doi: 10.1155/2017/8493545. Epub 2017 May 16.

Abstract

A whole group of polymorphisms of genes involved in the formation of the epidermal barrier, immune responses, and their regulation is important in the formation of atopic phenotype. The purpose of the study is to determine the relationship of polymorphisms of genes of Toll-like receptors TLR2 and TLR4 with clinical and immunological parameters in atopic dermatitis patients in a "case-control" study. Polymorphisms of genes TLR2 (p.Arg753Gln) and TLR4 (Asp299Gly) were detected by PCR. Parameters of the state of innate and adaptive immunity were assessed by the level of local production of sIgA, cytokine profile of blood serum for IL-4, IL-10, and IFN-γ. Biological samples from 50 people with allergic pathology, aged 4.5 to 35 years, and 100 healthy individuals (controls) were analyzed. Observed dysregulation of cytokine production (IL-4, IL-10) in patients with heterozygous polymorphic genotypes probably reflects an imbalance of Th1/Th2/Th17 regulation of immune system response in these individuals.

MeSH terms

  • Adaptive Immunity
  • Adolescent
  • Adult
  • Case-Control Studies
  • Child
  • Child, Preschool
  • Dermatitis, Atopic / genetics*
  • Female
  • Genetic Predisposition to Disease
  • Genotype
  • Humans
  • Immunity, Innate
  • Immunoglobulin A, Secretory / metabolism
  • Interferon-gamma / blood
  • Interleukin-10 / blood
  • Interleukin-4 / blood
  • Male
  • Polymorphism, Single Nucleotide
  • Skin / immunology*
  • Skin / pathology
  • Th1-Th2 Balance
  • Th17 Cells / immunology*
  • Toll-Like Receptor 2 / genetics*
  • Toll-Like Receptor 2 / metabolism
  • Toll-Like Receptor 4 / genetics*
  • Toll-Like Receptor 4 / metabolism
  • Young Adult

Substances

  • Immunoglobulin A, Secretory
  • TLR2 protein, human
  • TLR4 protein, human
  • Toll-Like Receptor 2
  • Toll-Like Receptor 4
  • Interleukin-10
  • Interleukin-4
  • Interferon-gamma