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Genetic variants in the apelin system and blood pressure responses to dietary sodium interventions: a family-based association study.


ABSTRACT: We examined the association between genetic variants in the apelin system and blood pressure (BP) responses to low-sodium and high-sodium interventions in the GenSalt Study.A 7-day low-sodium intervention (51.3 mmol sodium per day) followed by a 7-day high-sodium intervention (307.8 mmol sodium per day) was conducted among 1906 participants from 637 Han Chinese families. BP measurements were obtained at baseline and following each intervention using a random-zero sphygmomanometer. Twenty-three single nucleotide polymorphisms (SNPs), including both tag and functional SNPs, were selected from three candidate genes (APLN, APLNR, and ACE2). Single marker and haplotype analyses were conducted using the Family Based Association Test program. The false discovery rate method was used to correct for multiple testing.SNPs rs2282623 and rs746886 of the APLNR gene were significantly associated with DBP (both P = 0.002) and mean arterial pressure (MAP) (P = 0.001 and 0.005, respectively) responses to low-sodium intervention. Six SNPs of the ACE2 gene were significantly associated with SBP, DBP, or MAP responses to low-sodium intervention. Three of them, rs1514283, rs1514282, and rs4646176, were also significantly associated with MAP response to high-sodium intervention (all P

SUBMITTER: Zhao Q 

PROVIDER: S-EPMC2905479 | biostudies-literature | 2010 Apr

REPOSITORIES: biostudies-literature

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Genetic variants in the apelin system and blood pressure responses to dietary sodium interventions: a family-based association study.

Zhao Qi Q   Hixson James E JE   Rao Dabeeru C DC   Gu Dongfeng D   Jaquish Cashell E CE   Rice Treva T   Shimmin Lawrence C LC   Chen Jichun J   Cao Jie J   Kelly Tanika N TN   Hamm Lotuce Lee LL   He Jiang J  

Journal of hypertension 20100401 4


<h4>Objective</h4>We examined the association between genetic variants in the apelin system and blood pressure (BP) responses to low-sodium and high-sodium interventions in the GenSalt Study.<h4>Methods</h4>A 7-day low-sodium intervention (51.3 mmol sodium per day) followed by a 7-day high-sodium intervention (307.8 mmol sodium per day) was conducted among 1906 participants from 637 Han Chinese families. BP measurements were obtained at baseline and following each intervention using a random-zer  ...[more]

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