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Epigenome-wide association study of chronic obstructive pulmonary disease and lung function in Koreans.

ABSTRACT: AIM:To identify differentially methylated probes (DMPs) and regions (DMRs) in relation to chronic obstructive pulmonary disease (COPD) and lung function traits. METHODS:We performed an epigenome-wide association study of COPD and spirometric parameters, including forced expiratory volume in 1 s (FEV1), forced vital capacity (FVC) and FEV1/FVC, in blood DNA using the Infinium HumanMethylation450 (n = 100, a Korean COPD cohort). RESULTS:We found one significant DMP (cg03559389, DIP2C) and 104 significant DMRs after multiple-testing correction. Of these, 34 DMRs mapped to genes differential expressed with respect to the same trait. Five of the genes were associated with more than two traits: CTU2, USP36, ZNF516, KLK10 and CPT1B. CONCLUSION:We identified novel differential methylation loci related to COPD and lung function in blood DNA in Koreans and confirmed previous findings in non-Asians. Epigenetic modification could contribute to the etiology of these phenotypes.

SUBMITTER: Lee MK

PROVIDER: S-EPMC5674213 | biostudies-literature | 2017 Jul

REPOSITORIES: biostudies-literature

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Epigenome-wide association study of chronic obstructive pulmonary disease and lung function in Koreans.

Lee Mi Kyeong MK Hong Yoonki Y Kim Sun-Young SY Kim Woo Jin WJ London Stephanie J SJ

Epigenomics 20170616 7

<h4>Aim</h4>To identify differentially methylated probes (DMPs) and regions (DMRs) in relation to chronic obstructive pulmonary disease (COPD) and lung function traits.<h4>Methods</h4>We performed an epigenome-wide association study of COPD and spirometric parameters, including forced expiratory volume in 1 s (FEV1), forced vital capacity (FVC) and FEV1/FVC, in blood DNA using the Infinium HumanMethylation450 (n = 100, a Korean COPD cohort).<h4>Results</h4>We found one significant DMP (cg0355938 ...[more]

PMID: 28621160

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Project description:COPD is a major cause of disability, but little is known about how disability develops in this condition.The authors analysed data from the Function, Living, Outcomes and Work (FLOW) Study which enrolled 1202 Kaiser Permanente Northern California members with COPD at baseline and re-evaluated 1051 subjects at 2-year follow-up. The authors tested the specific hypothesis that the development of specific non-respiratory impairments (abnormal body composition and muscle strength) and functional limitations (decreased lower extremity function, poor balance, mobility-related dyspnoea, reduced exercise performance and decreased cognitive function) will determine the risk of disability in COPD, after controlling for respiratory impairment (FEV(1) and oxygen saturation). The Valued Life Activities Scale was used to assess disability in terms of a broad range of daily activities. The primary disability outcome measure was defined as an increase in the proportion of activities that cannot be performed of 3.3% or greater from baseline to 2-year follow-up (the estimated minimal important difference). Multivariable logistic regression was used for analysis.Respiratory impairment measures were related to an increased prospective risk of disability (multivariate OR 1.75; 95% CI 1.26 to 2.44 for 1 litre decrement of FEV(1) and OR 1.57 per 5% decrement in oxygen saturation; 95% CI 1.13 to 2.18). Non-respiratory impairment (body composition and lower extremity muscle strength) and functional limitations (lower extremity function, exercise performance, and mobility-related dyspnoea) were all associated with an increased longitudinal risk of disability after controlling for respiratory impairment (p<0.05 in all cases). Non-respiratory impairment and functional limitations were predictive of prospective disability, above-and-beyond sociodemographic characteristics, smoking status and respiratory impairment (area under the receiver operating characteristic curve increased from 0.65 to 0.75; p<0.001).Development of non-respiratory impairment and functional limitations, which reflect the systemic nature of COPD, appear to be critical determinants of disablement. Prevention and treatment of disability require a comprehensive approach to the COPD patient.

Dataset Information

Epigenome-wide association study of chronic obstructive pulmonary disease and lung function in Koreans.

Publications

Epigenome-wide association study of chronic obstructive pulmonary disease and lung function in Koreans.

Similar Datasets

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