Associations of the serum/glucocorticoid regulated kinase genes with BP changes and hypertension incidence: The GenSalt study

Dingding Zhang, Dongfeng Gu, Jiang He, James E. Hixson, Dabeeru C. Rao, Changwei Li, Hua He, Jichun Chen, Jianfeng Huang, Jing Chen, Treva K. Rice, Shufeng Chen, Tanika N. Kelly

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3 Scopus citations

Abstract

BACKGROUND Single-marker and novel gene-based methods were employed to examine the associations of the serum/glucocorticoid regulated kinases (SGK) gene family with longitudinal blood pressure (BP) changes and hypertension incidence in a family-based cohort study. METHODS Totally, 1,768 Chinese participants from the Genetic Epidemiology Network of Salt Sensitivity (GenSalt) follow-up study were included in the current analyses. Nine BP measures were obtained at each of 3 visits during the GenSalt follow-up study. Mixed-model and Gene-based analyses were used to examine the associations of the SGK gene family with longitudinal BP phenotypes. Bonferroni correction was applied to account for multiple testing. RESULTS After an average 7.2-year follow-up, 32.2% (513) of participants free of hypertension at baseline developed hypertension. Four novel SNPs in the SGK1 gene were predictive of the longitudinal BP phenotypes. The major alleles of SGK1 rs1763498 and rs114414980 conferred 2.9-and 2.5-fold increased risks of hypertension development, respectively (P = 1.0 × 10-4 and 6.0 × 10-4, respectively). In addition, the major allele of SGK1 rs229133 was significantly associated with 0.4 mm Hg larger annual increases in systolic BP (P = 4.2 × 10-4), while the major allele of rs6924468 was significantly associated with 0.2 mm Hg smaller annual increases in diastolic BP (P = 4.2 × 10-4). Gene-based analyses revealed an association of the SGK1 gene with risk of hypertension development (P = 7.4 × 10-3). No evidence for the SGK2 and SGK3 genes was found. CONCLUSIONS The findings of the current study suggest that the SGK1 gene may play a role in long-term BP regulation and hypertension incidence.

Original languageEnglish
Pages (from-to)95-101
Number of pages7
JournalAmerican Journal of Hypertension
Volume30
Issue number1
DOIs
StatePublished - Jan 2017

Keywords

  • Blood pressure
  • Blood pressure changes
  • Common variants
  • Hypertension
  • SGK

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