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Association of ADAM33 gene polymorphisms with asthma in a Chinese population

Authors


  • Authorship and contributorship: Xiangyu Chi wrote and provided research for the paper. Laicheng Wang, Jing Wang, Qing Li, Xuequn Wang, Jianping Wang, and Wei Xiao contributed to the research for the paper.

  • Ethics: This study has been performed in accordance with the ethical standards laid down in the Declaration of Helsinki. All patients provided written informed consent prior to their inclusion in the study.

  • Conflict of interest: The authors have stated explicitly that there are no conflicts of interest in connection with this article.

Xiangyu Chi, MSc, Department of Healthcare, Provincial Hospital affiliated with Shandong University, 324#, Jingwu Road, Jinan, 250021, China. Tel: +86-531-85186128, email: chixiangyu7216@yahoo.com.cn

Abstract

Background and Aim:  Asthma is a very common disease involving genetic and environmental factors. A disintegrin and metalloproteinase 33 (ADAM33) has been one of the most exciting candidate genes for asthma since its first association with the disease in the white population. Recently, studies on the association of ADAM33 gene polymorphisms with the risk of asthma have been controversial. We therefore focused on testing the hypothesis that either single-nucleotide polymorphisms (SNPs) of the ADAM33 gene may be associated with asthma risk. The aim of this study was to evaluate the potential relationship between polymorphisms of ADAM33 and asthma in a Han population in China.

Methods:  A case control study was conducted in a Han population of eastern Chinese population. A total of 329 asthma patients and a control group of 316 healthy volunteers were recruited for this study. Four polymorphic sites (F+1, S2, T2 and V4) were selected for genotyping. Genotypes were determined by the allele-specific polymerase chain reaction with fluorescence melting curves and DNA sequencing method. Data were analysed using the chi-squared test software.

Results:  Statistically significant differences in the distributions of the S2 site between patients and controls were observed (χ2 = 7.140, P < 0.05).

Conclusion:  These preliminary results suggest an association between ADAM33 polymorphisms S2 C/G and asthma in a Chinese Han population. The SNPs (F+1 C/T, T2 G/A and V4 C/G) of the ADAM33 gene may be the causal variants in asthma disease, but the strength of this evidence is limited by our small sample size.

Please cite this paper as: Chi X, Wang L, Wang J, Li Q, Wang X, Wang J and Xiao W. Association of ADAM33 gene polymorphisms with asthma in a Chinese population. Clin Respir J 2013; 7: 16–20.

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