J Prev Med Public Health.  2016 Sep;49(5):253-259. 10.3961/jpmph.16.028.

Replication of Early B-cell Factor 1 (EBF1) Gene-by-psychosocial Stress Interaction Effects on Central Adiposity in a Korean Population

• Kim HJ
• Min JY
• Min KB

• KMID: 2356069
• DOI: http://doi.org/10.3961/jpmph.16.028

Abstract

OBJECTIVES
Central obesity plays a major role in the development of many chronic diseases, including cardiovascular disease and cancer. Chronic stress may be involved in the pathophysiology of central obesity. Although several large-scale genome-wide association studies have reported susceptibility genes for central adiposity, the effects of interactions between genes and psychosocial stress on central adiposity have rarely been examined. A recent study focusing on Caucasians discovered the novel gene early B-cell factor 1 (EBF1), which was associated with central obesity-related traits via interactions with stress levels. We aimed to evaluate EBF1 gene-by-stress interaction effects on central adiposity traits, including visceral adipose tissue (VAT), in Korean adults.
METHODS
A total of 1467 Korean adults were included in this study. We selected 22 single-nucleotide polymorphisms (SNPs) in the EBF1 gene and analyzed their interactions with stress on central adiposity using additive, dominant, and recessive genetic modeling.
RESULTS
The four SNPs that had strong linkage disequilibrium relationships (rs10061900, rs10070743, rs4704967, and rs10056564) demonstrated significant interactions with the waist-hip ratio in the dominant model (p(int)<0.007). In addition, two other SNPs (rs6556377 and rs13180086) were associated with VAT by interactions with stress levels, especially in the recessive genetic model (p(int)<0.007). As stress levels increased, the mean values of central adiposity traits according to SNP genotypes exhibited gradual but significant changes (p<0.05).
CONCLUSIONS
These results suggest that the common genetic variants for EBF1 are associated with central adiposity through interactions with stress levels, emphasizing the importance of managing stress in the prevention of central obesity.

Keyword

Gene-environment interaction; Stress; Obesity; Early B-cell factor 1; Adults

MeSH Terms

Adiposity*
Adult
B-Lymphocytes*
Cardiovascular Diseases
Chronic Disease
Gene-Environment Interaction
Genome-Wide Association Study
Genotype
Humans
Intra-Abdominal Fat
Linkage Disequilibrium
Models, Genetic
Obesity
Obesity, Abdominal
Polymorphism, Single Nucleotide
Waist-Hip Ratio