The NRAMP1, VDR, TNF-α, ICAM1, TLR2 and TLR4 gene polymorphisms in Iranian patients with pulmonary tuberculosis: A case-control study.
Infect Genet Evol
; 39: 92-98, 2016 Apr.
Article
en En
| MEDLINE
| ID: mdl-26774366
ABSTRACT
The innate immune response drives early events in Mycobacterium tuberculosis infection. 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. We conducted an association study and included 96 patients and 122 matched healthy individuals. We used single ARMS-PCR technique to simultaneously genotype fourteen polymorphisms in this survey. Among all fourteen polymorphisms that were examined, three polymorphisms were significantly different between case and control groups. The TNF -308A polymorphism showed significant increase in allele and genotype frequencies among patients compared to control individuals [-308A allele 19.3 vs. 9.4%, GA genotype 28.1 vs. 17.2%, AA genotype 5.2 vs. 0.8%; Corrected P (Pc)<0.05], and the TLR4 variant allele and genotypes prevalence (D299G and T399I) were significantly higher among patients compared to controls [DG genotype 14.6 vs. 5.7%, Pc<0.05 and I399 allele 4.2 vs. 0.8%, TI genotype 8.3 vs. 1.6%; Pc<0.05], respectively. In conclusion, our data suggest that TLR4 (D299G and T399I) and TNF (-308G/A) genetic polymorphisms may influence the risk of developing tuberculosis after exposure to Mycobacterium.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Contexto en salud:
1_ASSA2030
/
2_ODS3
/
3_ND
Problema de salud:
1_doencas_nao_transmissiveis
/
1_doencas_transmissiveis
/
2_enfermedades_transmissibles
/
2_muertes_prematuras_enfermedades_notrasmisibles
/
3_neglected_diseases
/
3_tuberculosis
Asunto principal:
Tuberculosis Pulmonar
/
Factor de Necrosis Tumoral alfa
/
Polimorfismo de Nucleótido Simple
/
Receptor Toll-Like 4
/
Estudios de Asociación Genética
Tipo de estudio:
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
Límite:
Adult
/
Aged
/
Aged80
/
Female
/
Humans
/
Male
/
Middle aged
País/Región como asunto:
Asia
Idioma:
En
Revista:
Infect Genet Evol
Asunto de la revista:
BIOLOGIA
/
DOENCAS TRANSMISSIVEIS
/
GENETICA
Año:
2016
Tipo del documento:
Article
País de afiliación:
Irán