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BioMed Research International
Volume 2017 (2017), Article ID 2756726, 10 pages
https://doi.org/10.1155/2017/2756726
Research Article

Genetic Variants in the Hedgehog Interacting Protein Gene Are Associated with the FEV1/FVC Ratio in Southern Han Chinese Subjects with Chronic Obstructive Pulmonary Disease

1State Key Laboratory of Respiratory Diseases, Guangzhou Institute of Respiratory Disease, The First Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, China
2Department of Pulmonary and Critical Care Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
3Department of Respiratory Medicine, Lufeng People’s Hospital, Lufeng, Guangdong, China
4Department of Respiratory Medicine, Xiangyang Central Hospital, Xiangyang, Hubei, China
5Department of Respiratory Medicine, The Second Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, China
6Department of Laboratory Medicine, The First Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, China

Correspondence should be addressed to Wenju Lu; moc.oohay@29ulw

Received 15 May 2017; Revised 11 July 2017; Accepted 18 July 2017; Published 27 August 2017

Academic Editor: Salvatore Battaglia

Copyright © 2017 Zili Zhang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Background. Convincing evidences have demonstrated the associations between HHIP and FAM13a polymorphisms and COPD in non-Asian populations. Here genetic variants in HHIP and FAM13a were investigated in Southern Han Chinese COPD. Methods. A case-control study was conducted, including 989 cases and 999 controls. The associations between SNPs genotypes and COPD were performed by a logistic regression model; for SNPs and COPD-related phenotypes such as lung function, COPD severity, pack-year of smoking, and smoking status, a linear regression model was employed. Effects of risk alleles, genotypes, and haplotypes of the 3 significant SNPs in the HHIP gene on FEV1/FVC were also assessed in a linear regression model in COPD. Results. The mean FEV1/FVC% value was 46.8 in combined COPD population. None of the 8 selected SNPs apparently related to COPD susceptibility. However, three SNPs (rs12509311, rs13118928, and rs182859) in HHIP were associated significantly with the FEV1/FVC% ( = 4.1 × 10−4) in COPD adjusting for gender, age, and smoking pack-years. Moreover, statistical significance between risk alleles and the FEV1/FVC% ( = 2.3 × 10−4), risk genotypes, and the FEV1/FVC% ( = 3.5 × 10−4) was also observed in COPD. Conclusions. Genetic variants in HHIP were related with FEV1/FVC in COPD. Significant relationships between risk alleles and risk genotypes and FEV1/FVC in COPD were also identified.