title: Association between microsatellite polymorphisms in intron II of the human Toll-like receptor 2 gene and nontuberculous mycobacterial lung disease in a Korean population.
abstract: This study evaluated the association between the guanine-thymine (GT) repeat polymorphism in intron II of the Toll-like receptor 2 (TLR2) gene and lung disease caused by nontuberculous mycobacteria (NTM). Polymerase chain reaction and gene scans were used to determine the numbers of GT repeats for 193 patients with the nodular bronchiectatic form of NTM lung disease, including 110 patients with Mycobacterium avium-intracellulare (MAC) infection, 82 patients with Mycobacterium abscessus infection, and 1 patient with co-infection of both organisms. These values were compared with the results for 191 controls. Genotypes with shorter GT repeats were more common among patients with NTM lung disease (50.8 vs 37.7%, p=0.01). In the subgroup analysis, genotypes that included S alleles were more common in the patients with MAC lung disease (53.6%, p=0.01, OR, 1.91; 95% CI, 1.16, 3.16) than in healthy controls, whereas this difference was not statistically significant in patients with M. abscessus lung disease (47.6%, p=0.13). In conclusion, these results suggest that the GT repeat microsatellite polymorphisms in intron II of the human TLR2 gene contribute to the development of NTM lung disease, especially MAC lung disease, in a Korean population.
authors.affiliation: Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, and Lung Institute, Seoul National University College of Medicine, Seoul, Korea.
authors.forename: Jae-Joon
authors.initials: JJ
authors.lastname: Yim
authors.forename: Hee Jung
authors.initials: HJ
authors.lastname: Kim
authors.forename: O Jung
authors.initials: OJ
authors.lastname: Kwon
authors.forename: Won-Jung
authors.initials: WJ
authors.lastname: Koh
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000483:Alleles; D005260:Female; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease; D005838:Genotype; D006801:Humans; D007723:Korea / Q000453:epidemiology; D008171:Lung Diseases / Q000235:genetics* / Q000382:microbiology; D008297:Male; D018895:Microsatellite Repeats; D008875:Middle Aged; D009165:Mycobacterium Infections, Nontuberculous / Q000453:epidemiology / Q000235:genetics* / Q000382:microbiology; D015269:Mycobacterium avium Complex; D015270:Mycobacterium avium-intracellulare Infection / Q000453:epidemiology / Q000235:genetics* / Q000382:microbiology; D011110:Polymorphism, Genetic; D051195:Toll-Like Receptor 2 / Q000235:genetics*
chemical_list: C495342:TLR2 protein, human; D051195:Toll-Like Receptor 2