In the present study, we investigated whether variants in the TLR-1 1805T/G (Ile602Ser), TLR-2 2258G/A (Arg753Gln), TLR-4896A/G (Asp299Gly), TLR-41196C/T (Thr399Ile), TLR-6 745C/T (Ser249Pro), TIRAP 975C/T (Ser180Leu) genes and TLR-9 promoter region polymorphisms at positions -1237C/T and -1486C/T are associated with susceptibility or resistance to pulmonary tuberculosis (PTB).
The frequencies of the GG genotype of SNP rs7873784 in TLR4 (OR = 2.136; 95% CI: 1.312-3.478) and the CC genotype of rs3764879 in TLR8 (OR = 1.982; 95% CI: 1.292-3.042) were also significantly higher in the PTB group than in the HC group.
CONCLUSIONS There was no association between the polymorphisms in TLR4 and 9 and PTB risk overall, but TLR4rs4986791 and TLR9 rs352139 might be associated with increased PTB risk in Africans and Asians, respectively.
In this population-based case control study, we explored the genetic polymorphisms of IL-17, TLR4 and miR-146a in association with pulmonary tuberculosis in a Chinese Han population.
Since human genetic variation is an important determinant in the outcome of infection with M. tuberculosis, we typed polymorphisms in the innate immune molecules, such as natural-resistance-associated macrophage protein 1 (NRAMP1), Vitamin D receptor (VDR), Tumor necrosis factor alpha (TNF-α), intercellular adhesion molecule1 (ICAM-1), Toll-like receptor 2 (TLR2) and Toll-like receptor 4 (TLR4) in a case-control study of pulmonary tuberculosis in Iranian population.
The present study was undertaken to explore the relationship of Toll-like receptor (TLR) 2, TLR4 genes polymorphisms with Pulmonary tuberculosis (PTB) risk in a sample of Chinese population.
Furthermore, SNPs TLR9 rs352139 and TLR8 rs3764880 were associated with PTB in the late-onset (≥39-year-old) patient group (OR = 0.60, p = 0.0029 and OR = 0.70, p = 0.021, respectively) and SNPs TLR2 rs3804099, TLR4rs4986790 and TLR4rs1927906 in the early-onset (≤ 38-year-old) group (OR = 0.53, p = 0.0012; OR = 3.45, p = 0.013; OR = 2.31, p = 0.044, respectively).
In the present study, we compared the role of genetic variations of the TLR4 gene in susceptibility to COPD and PTB and illuminated the underlying molecular mechanism of functional single-nucleotide polymorphisms (SNPs).