Association of TRPV4 gene polymorphisms with chronic obstructive pulmonary disease.

Abstract:

:Chronic obstructive pulmonary disease (COPD) is characterized by airway epithelial damage, bronchoconstriction, parenchymal destruction and mucus hypersecretion. Upon activation by a broad range of stimuli, transient receptor potential vanilloid 4 (TRPV4) functions to control airway epithelial cell volume and epithelial and endothelial permeability; it also triggers bronchial smooth muscle contraction and participates in autoregulation of mucociliary transport. These functions of TRPV4 may be important for the regulation of COPD pathogenesis, so TRPV4 is a candidate gene for COPD. We genotyped 20 single nucleotide polymorphisms (SNPs) in TRPV4, and tested qualitative COPD and quantitative FEV(1) and FEV(1)/(F)VC phenotypes in two independent large populations. The family population had 606 pedigrees including 1891 individuals, and the case-control sample included 953 COPD cases and 956 controls. Family-based association tests were performed in the family data. Logistic regression and linear models were used in the case-control data to replicate the association results. In the family data, seven out of 20 SNPs tested were associated with COPD (2.5 x 10(-4) < or = P < or = 0.04) and six SNPs were associated with FEV(1)/VC (0.02 < or = P < or = 0.03) from family-based association tests (PBAT) analysis. Four out of the seven SNPs associated with COPD demonstrated replicated associations with the same effect directions in the case-control population (0.02 < or = P < or = 0.03). Significant haplotype associations supported the results of single SNP analyses. Thus, polymorphisms in the TRPV4 gene are associated with COPD.

journal_name

Hum Mol Genet

journal_title

Human molecular genetics

authors

Zhu G,ICGN Investigators.,Gulsvik A,Bakke P,Ghatta S,Anderson W,Lomas DA,Silverman EK,Pillai SG

doi

10.1093/hmg/ddp111

subject

Has Abstract

pub_date

2009-06-01 00:00:00

pages

2053-62

issue

11

eissn

0964-6906

issn

1460-2083

pii

ddp111

journal_volume

18

pub_type

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