CATT polymorphism in MIF gene promoter is closely related to human pulmonary tuberculosis in a southwestern China population

Int J Immunopathol Pharmacol. 2018 Jan-Dec:32:2058738418777108. doi: 10.1177/2058738418777108.

Abstract

Macrophage migration inhibitory factor (MIF) is deemed as an immunoregulatory and proinflammatory cytokine related to the progression of tuberculosis. A CATT short tandem repeat (STR) polymorphism at position -794 in the MIF gene promoter region is associated with the susceptibility to tuberculosis (TB). To investigate whether macrophage MIF gene mif CATT variants are associated with susceptibility to retreatment cases of TB and drug-resistant TB prevalence, genotyping of MIF -794 CATT polymorphism and quantifying of serum MIF were performed to associate MIF-794 CATT polymorphism with new patients and retreatment cases. Significant increases in MIF -794 CATT genotypes 7/8 and allele CATT 8 were observed in TB patients. Significant differences in the genotypic frequencies of MIF -794 CATT (5/X + 6/X vs 7/7 + 7/8) were demonstrated upon comparing the total cases and the new cases of TB with the controls. Significant differences in the allelic frequencies of MIF -794 CATT (5 + 6 vs 7 + 8) were observed in the total cases and new cases of TB. No differences in the genotypic frequencies of the MIF -794 CATT (5/X + 6/X vs 7/7 + 7/8) were observed between the retreatment cases and the controls or between the new cases and retreatment cases. In conclusion, the MIF -794 CATT genotypes 7/8 and allele CATT 8 were highly associated with TB; no differences in the genotypic frequencies of the MIF -794 CATT (5/X + 6/X vs 7/7 + 7/8) were observed between the new cases and retreatment cases.

Keywords: Mycobacterium tuberculosis; gene promoter; macrophage migration inhibitory factor; microsatellite polymorphism; tuberculosis, CATT polymorphism.

MeSH terms

  • Adult
  • Antitubercular Agents / therapeutic use
  • Asian People / genetics
  • Case-Control Studies
  • China / epidemiology
  • Drug Resistance, Bacterial
  • Female
  • Gene Frequency
  • Genetic Association Studies
  • Genetic Predisposition to Disease
  • Humans
  • Intramolecular Oxidoreductases / genetics*
  • Macrophage Migration-Inhibitory Factors / genetics*
  • Male
  • Microsatellite Repeats*
  • Middle Aged
  • Phenotype
  • Polymorphism, Genetic*
  • Promoter Regions, Genetic*
  • Recurrence
  • Retreatment
  • Risk Factors
  • Tuberculosis, Pulmonary / drug therapy
  • Tuberculosis, Pulmonary / ethnology
  • Tuberculosis, Pulmonary / genetics*
  • Tuberculosis, Pulmonary / microbiology
  • Young Adult

Substances

  • Antitubercular Agents
  • Macrophage Migration-Inhibitory Factors
  • Intramolecular Oxidoreductases
  • MIF protein, human