Genetic association of short sleep duration with hypertension incidence--a 6-year follow-up in the Korean genome and epidemiology study.
BACKGROUND
Hypertension (HT) is caused by complex interactions between genetic and environmental factors. Despite evidence for an association between short sleep duration and the development of HT, genetic factors associated with this effect have not been defined. Here we prospectively investigated the incidence of HT in subjects with short sleep duration over a 6-year follow-up period, and identified associated genetic variants in a genome-wide association study.


RESULTS
Sleep duration was determined by questionnaire and 3 categories were established: <5h, 5-7h, and >7h. Genotyping was carried out using the Affymetrix Genome-Wide Human Single Nucleotide Polymorphism (SNP) Array 5.0. Of the 4,965 individuals included in our study, 1,071 (543 of 2,330 men, 528 of 2,635 women) developed HT. The cumulative incidence of HT during the 6-year study period was 21.6%. Sleep duration <5h was associated with an increased risk of incident HT only in premenopausal women (adjusted hazard ratio 2.43, 95% confidence interval 1.36-4.35). The SNPs of rs6691577, rs2226284 and rs12756253 were associated with this increased risk.


CONCLUSIONS
This prospective communitywide study showed that premenopausal women with short sleep duration had an increased risk of incident HT, and found associations with specific genomic markers.
Division of Pulmonary, Sleep and Critical Care Medicine, Department of Internal Medicine, Korea University Ansan Hospital, Ansan, Korea.
Se Joong
SJ
Kim
Seung Ku
SK
Lee
Seong Hwan
SH
Kim
Chang-Ho
CH
Yun
Je Hyeong
JH
Kim
Robert J
RJ
Thomas
Chol
C
Shin
D000328:Adult; D000368:Aged; D000704:Analysis of Variance; D044466:Asian People / Q000235:genetics*; D016009:Chi-Square Distribution; D005260:Female; D005500:Follow-Up Studies; D020869:Gene Expression Profiling / Q000379:methods; D005819:Genetic Markers; D020022:Genetic Predisposition to Disease; D055106:Genome-Wide Association Study; D006801:Humans; D006973:Hypertension / Q000208:ethnology / Q000235:genetics*; D015994:Incidence; D008297:Male; D008875:Middle Aged; D020411:Oligonucleotide Array Sequence Analysis; D010641:Phenotype; D020641:Polymorphism, Single Nucleotide; D017697:Premenopause; D016016:Proportional Hazards Models; D011446:Prospective Studies; D056910:Republic of Korea / Q000453:epidemiology; D018570:Risk Assessment; D012307:Risk Factors; D012737:Sex Factors; D012890:Sleep / Q000235:genetics*; D011795:Surveys and Questionnaires; D013997:Time Factors
D005819:Genetic Markers