Research Article

Association between polymorphisms in ADAM33, CD14, and TLR4 with asthma in the Uygur population in China

Published: June 18, 2014
Genet. Mol. Res. 13 (2) : 4680-4690 DOI: https://doi.org/10.4238/2014.June.18.11
Cite this Article:
(2014). Association between polymorphisms in ADAM33, CD14, and TLR4 with asthma in the Uygur population in China. Genet. Mol. Res. 13(2): gmr4155. https://doi.org/10.4238/2014.June.18.11
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Abstract

We evaluated the associations between single nucleotide polymorphisms (SNPs) and haplotypes of the genes encoding a disintegrin and metalloproteinase 33 (ADAM33), cluster of differentiation 14 (CD14), and Toll-like receptor 4 (TLR4) and the susceptibility of developing specific adult phenotypes of bronchial asthma in a Chinese Uygur population. Five SNPs of ADAM33 (T1, T2, and V4), 3 SNPs of CD14 (-1359G/T, -1145G/A, and -159T/C), and 2 SNPs of TLR4 (-896A/G and -1196C/T) were genotyped in a Chinese Uygur sample of 126 adult asthmatic patients and 126 control subjects. Gene polymorphisms were detected by polymerase chain reaction-restriction fragment length polymorphism analysis. The genotyping results were confirmed in a random subgroup of our samples using direct DNA sequencing. The allele frequencies of ADAM33 T1 (TC), T2 (AG), and V4 (GG) were significantly higher in patients than in controls (P ADAM33 gene were associated with significantly decreased FEV1 levels in patients with asthma. The haplotype frequencies of Hap3 (CAC) and Hap4 (CAG) were significantly higher in patients than in controls (P ADAM33 may contribute to the susceptibility to asthma. Specific haplotypes of ADAM33 may contribute to a higher susceptibility to asthma in the Chinese Uygur population.

We evaluated the associations between single nucleotide polymorphisms (SNPs) and haplotypes of the genes encoding a disintegrin and metalloproteinase 33 (ADAM33), cluster of differentiation 14 (CD14), and Toll-like receptor 4 (TLR4) and the susceptibility of developing specific adult phenotypes of bronchial asthma in a Chinese Uygur population. Five SNPs of ADAM33 (T1, T2, and V4), 3 SNPs of CD14 (-1359G/T, -1145G/A, and -159T/C), and 2 SNPs of TLR4 (-896A/G and -1196C/T) were genotyped in a Chinese Uygur sample of 126 adult asthmatic patients and 126 control subjects. Gene polymorphisms were detected by polymerase chain reaction-restriction fragment length polymorphism analysis. The genotyping results were confirmed in a random subgroup of our samples using direct DNA sequencing. The allele frequencies of ADAM33 T1 (TC), T2 (AG), and V4 (GG) were significantly higher in patients than in controls (P ADAM33 gene were associated with significantly decreased FEV1 levels in patients with asthma. The haplotype frequencies of Hap3 (CAC) and Hap4 (CAG) were significantly higher in patients than in controls (P ADAM33 may contribute to the susceptibility to asthma. Specific haplotypes of ADAM33 may contribute to a higher susceptibility to asthma in the Chinese Uygur population.