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Apolipoprotein A5 3'-UTR variants and cardiometabolic traits in Koreans: results from the Korean genome and epidemiology study and the Korea National Health and Nutrition Examination Survey

Authors
Kim, Oh YoenMoon, JiyoungJoe, GaramKwak, So-YoungKim, Ji YoungShin, Min-Jeong
Issue Date
2월-2018
Publisher
KOREAN NUTRITION SOC
Keywords
Apolipoprotein A-V; metabolic syndrome; triglycerides; Koreans
Citation
NUTRITION RESEARCH AND PRACTICE, v.12, no.1, pp.61 - 68
Indexed
SCIE
SCOPUS
KCI
Journal Title
NUTRITION RESEARCH AND PRACTICE
Volume
12
Number
1
Start Page
61
End Page
68
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/77828
DOI
10.4162/nrp.2018.12.1.61
ISSN
1976-1457
Abstract
BACKGROUND/OBJECTIVES: This study aimed to test the association between APOA5 3'-UTR variants (rs662799) and cardiometabolic traits in Koreans. SUBJECTS/METHODS: For this study, epidemiological data, Apolipoprotein A5 (APOA5) genotype information, and lymphoblastoid cell line (LCL) biospecimens from a subset of the Ansung-Ansan cohort within the Korean Genome and Epidemiology study (KoGES-ASAS; n = 7,704) as well as epidemiological data along with genomic DNA biospecimens of participants from a subset of the Korea National Health and Nutrition Examination Survey (KNHANES 2011-12; n = 2,235) were obtained. APOA5 mRNA expression was also measured. RESULTS: APOA5 rs662799 genotype distributions in both the KoGES-ASAS and KNHANES groups were 50.6% for TT, 41.3% for TC, and 8.1% for CC, which are similar to those in previous reports. In both groups, minor C allele carriers, particularly subjects with CC homozygosity, had lower high-density lipoprotein (HDL) cholesterol and higher triglyceride levels than TT homozygotes. Linear regression analysis showed that the minor C allele significantly contributed to reduction of circulating HDL cholesterol levels [beta = -2.048, P < 0.001; beta = -2.199, P < 0.001] as well as elevation of circulating triglyceride levels [beta. = 0.053, P < 0.001; beta = 0.066, P < 0.001] in both the KoGES-ASAS and KNHANES groups. In addition, higher expression levels of APOA5 in LCLs of 64 healthy individuals were negatively associated with body mass index (r = -0.277, P = 0.027) and circulating triglyceride level (r = -0.340, P = 0.006) but not significantly correlated with circulating HDL cholesterol level. On the other hand, we observed no significant difference in the mRNA level of APOA5 according to APOA5 rs662799 polymorphisms. CONCLUSIONS: The C allele of APOA5 rs662799 was found to be significantly associated with cardiometabolic traits in a large Korean population from the KoGES-ASAS and KNHANES. The effect of this genotype may be associated with post-transcriptional regulation, which deserves further experimental confirmation.
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