Role of TLR4 C>1196T (Thr399Ile) and TLR4 A>896G (Asp299Gly) polymorphisms in a North Indian population with asthma: a case-control study.

Abstract:

:Toll-like receptor 4 (TLR4) is the most important TLR among the pattern recognition receptors which recognizes lipopolysaccharide of gram-negative bacteria. They identify a highly conserved structure of microbes called pathogen-associated molecular patterns and activate immune and inflammatory responses that have been shown to be involved in the pathogenesis of asthma. The role of TLR4 gene polymorphisms in asthma was detected in a total of 964 individuals, including 483 healthy controls and 481 asthma patients from a North Indian population. The genotyping was carried out using polymerase chain reaction-restriction fragment length polymorphism method. Statistical analysis revealed that the heterozygous genotype as well as the mutant (T) allele of the TLR4 C>1196T (Thr399Ile) polymorphism shows resistance towards asthma with OR = 0.70, 95% CI (0.49-0.99), P corrected value = 0.046 and OR = 0.72, 95% CI (0.52-0.98), P corrected value = 0.039, respectively. However, no association was found between the TLR4 A>896G (Asp299Gly) polymorphism and asthma patients (P > 0.05). This is the first study conducted in India conferring TLR4 (Thr399Ile) polymorphism resistance towards asthma, while lack of association was found between TLR4 (Asp299Gly) polymorphism and asthma in the studied North Indian population.

journal_name

Int J Immunogenet

authors

Sinha S,Singh J,Jindal SK,Birbian N,Singla N

doi

10.1111/iji.12115

subject

Has Abstract

pub_date

2014-12-01 00:00:00

pages

463-71

issue

6

eissn

1744-3121

issn

1744-313X

journal_volume

41

pub_type

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