CD14-159C/T polymorphism in the development of delayed skin hypersensitivity to tuberculin

PLoS One. 2017 Dec 27;12(12):e0190106. doi: 10.1371/journal.pone.0190106. eCollection 2017.

Abstract

The skin tuberculin test (TST), an example of a delayed-type hypersensitivity (DTH) reaction, is based on measuring the extent of skin induration to mycobacterial tuberculin (PPD). Little is known about the genetic basis of TST reactivity, widely used for diagnosing TB infection. The study investigated the relationship of the single base change polymorphic variants in CD14 gene (CD14(-159C/T)) with the development of DTH to PPD in BCG-vaccinated Polish Caucasian individuals. We found persistent lack of TST reactivity in about 40% of healthy subjects despite receiving more than one dose of BCG. The TST size was negatively correlated with the number of BCG inoculations. The distribution of C/T genotype was significantly more frequent among TST-negative compared with TST-positive individuals. The concentration of serum sCD14 was positively associated with mCD14 expression, but not with the TST status or CD14(-159C/T) polymorphism. A significant increase in mCD14 expression and serum sCD14 levels was found in TB group. We hypothesize that CD14(-159C/T) polymorphic variants might be one of genetic components in the response to attenuated M. bovis BCG bacilli.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Female
  • Humans
  • Hypersensitivity, Delayed*
  • Lipopolysaccharide Receptors / immunology*
  • Male
  • Polymorphism, Genetic*
  • Tuberculin / adverse effects*
  • Tuberculin Test
  • Young Adult

Substances

  • Lipopolysaccharide Receptors
  • Tuberculin

Grants and funding

This work was supported by the grant from the Polish Ministry of Science and Higher Education (N N402 098539). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.