Dataset Information

Gene expression profiling and association of circulating lactoferrin level with obesity-related phenotypes in Latino youth.

ABSTRACT: BACKGROUND/OBJECTIVES:Low-grade inflammation is an underlying feature of obesity and identifying inflammatory markers is crucial to understanding this disease. Therefore, the purpose of this study was twofold: (i) to perform a global microarray analysis and (ii) to investigate the role of lactoferrin (LTF), one of the most altered genes, in relation to obesity in Latino youth. METHODS:Non-diabetic Latino youth (71 males/92 females; 15.6?±?3.2 years) were studied. A subset of 39 participants was randomly selected for global microarray analysis profiling from the whole blood sample. Serum LTF was compared between lean (n?=?78) and overweight/obese (n?=?85) participants. RESULTS:Microarray analysis revealed that a total of 1870 probes were altered in expression ?1.2-fold and P?

SUBMITTER: Kim JY

PROVIDER: S-EPMC6831516 | biostudies-literature | 2015 Oct

REPOSITORIES: biostudies-literature

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Gene expression profiling and association of circulating lactoferrin level with obesity-related phenotypes in Latino youth.

Kim J Y JY Campbell L E LE Shaibi G Q GQ Coletta D K DK

Pediatric obesity 20141114 5

<h4>Background/objectives</h4>Low-grade inflammation is an underlying feature of obesity and identifying inflammatory markers is crucial to understanding this disease. Therefore, the purpose of this study was twofold: (i) to perform a global microarray analysis and (ii) to investigate the role of lactoferrin (LTF), one of the most altered genes, in relation to obesity in Latino youth.<h4>Methods</h4>Non-diabetic Latino youth (71 males/92 females; 15.6 ± 3.2 years) were studied. A subset of 39 pa ...[more]

PMID: 25394788

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Project description:IntroductionDNA methylation studies have associated methylation levels at different CpG sites or genomic regions with lung function. Moreover, genetic ancestry has been associated with lung function in Latinos. However, no epigenome-wide association study (EWAS) of lung function has been performed in this population. Here, we aimed to identify DNA methylation patterns associated with lung function in pediatric asthma among Latinos.ResultsWe conducted an EWAS in whole blood from 250 Puerto Rican and 148 Mexican American children and young adults with asthma. A total of five CpGs exceeded the genome-wide significance threshold of p = 1.17 × 10-7 in the combined analyses from Puerto Ricans and Mexican Americans: cg06035600 (MAP3K6, p = 6.13 × 10-8) showed significant association with pre-bronchodilator Tiffeneau-Pinelli index, the probes cg00914963 (TBC1D16, p = 1.04 × 10-7), cg16405908 (MRGPRE, p = 2.05 × 10-8), and cg07428101 (MUC2, p = 5.02 × 10-9) were associated with post-bronchodilator forced vital capacity (FVC), and cg20515679 (KCNJ6) with post-bronchodilator Tiffeneau-Pinelli index (p = 1.13 × 10-8). However, these markers did not show significant associations in publicly available data from Europeans (p > 0.05). A methylation quantitative trait loci analysis revealed that methylation levels at these CpG sites were regulated by genetic variation in Latinos and the Biobank-based Integrative Omics Studies (BIOS) consortium. Additionally, two differentially methylated regions in REXOC and AURKC were associated with pre-bronchodilator Tiffeneau-Pinelli index (adjusted p < 0.05) in Puerto Ricans and Mexican Americans. Moreover, we replicated some of the previous differentially methylated signals associated with lung function in non-Latino populations.ConclusionsWe replicated previous associations of epigenetic markers with lung function in whole blood and identified novel population-specific associations shared among Latino subgroups.

Dataset Information

Gene expression profiling and association of circulating lactoferrin level with obesity-related phenotypes in Latino youth.

Publications

Gene expression profiling and association of circulating lactoferrin level with obesity-related phenotypes in Latino youth.

Similar Datasets

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