Reduced thyroxine production in young household contacts of tuberculosis patients increases active tuberculosis disease risk.

ABSTRACT: In the current study, we followed 839 household contacts (HHCs) of tuberculosis (TB) patients for 2 years and identified the factors that enhanced the development of TB. Fourteen of the 17 HHCs who progressed to TB were in the 15- to 30-year-old age group. At baseline (the "0" time point, when all the individuals were healthy), the concentration of the thyroid hormone thyroxine (T4) was lower, and there were increased numbers of Tregs in PBMCs of TB progressors. At baseline, PBMCs from TB progressors stimulated with early secretory antigenic target 6 (ESAT-6) and 10 kDa culture filtrate antigen (CFP-10) produced less IL-1α. Thyroid hormones inhibited Mycobacterium tuberculosis (Mtb) growth in macrophages in an IL-1α-dependent manner. Mtb-infected Thra1PV/+ (mutant thyroid hormone receptor)

SUBMITTER: Devalraju KP 

PROVIDER: S-EPMC8410087 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature