Associations of the -344 T>C and the 3097 G>A polymorphisms of CYP11B2 gene with hypertension, type 2 diabetes, and metabolic syndrome in a French population.
BACKGROUND
Aldosterone can affect both blood pressure (BP) and glucose metabolism. We assessed the association of two polymorphisms -344 T>C and the 3097 G>A in the aldosterone synthase gene (CYP11B2) with prevalent and incident hypertension (HT), type 2 diabetes (T2D), and the metabolic syndrome (MetS).


METHODS
We studied the 5,212 participants to D.E.S.I.R. (Data from Epidemiologic Study on the Insulin Resistance syndrome), a cohort from French general population. Genotyping was done by a TaqMan assay. Analysis of covariance, multivariate logistic regression (adjusted for age, MetS components) and haplotype analysis were performed.


RESULTS
The prevalences and 9-year incidences were 16.7 and 36.1% for HT, 2.6 and 6.2% for T2D, and 19.3 and 25.1% for the MetS. Risk for incident HT was reduced with the AA genotype of 3097 G>A, adjusted odds ratios (OR): 0.67; p = 0.04. The prevalence of HT was lower in women carrying the C allele of -344 T>C, OR 0.75; p = 0.03 for the TC genotype and 0.69; p = 0.03 for the CC genotype. In men, incident T2D was associated with both polymorphisms, adjusted OR for -344 T>C: 1.63; p = 0.04 for TC genotype and 2.12; p = 0.008 for CC genotype; for the 3097 G>A: the AA genotype was associated with a lower risk, OR 0.23; p = 0.02. In men, incident MetS was associated with 3097 G>A, OR: 0.57; p = 0.02 for AA genotype. Significant associations between haplotype combinations and the prevalence or incidence of the three diseases were also found.


CONCLUSIONS
The -344 T>C and 3097 G>A polymorphisms in the CYP11B2 are associated with T2D, hypertension and the MetS in European subjects with gender variations.
Institut National de la Santé et de la Recherche Médicale (INSERM) U695, Déterminants Génétiques du Diabète de Type 2 et de ses Complications Cardiovasculaires, Faculté Xavier Bichat, Université Denis DIDEROT Paris 7, Paris, France. naima.munoz@inserm.fr
Naïma Muñoz
NM
Bellili
Lydia
L
Foucan
Frédéric
F
Fumeron
Kamel
K
Mohammedi
Florence
F
Travert
Ronan
R
Roussel
Beverley
B
Balkau
Jean
J
Tichet
Michel
M
Marre
D000328:Adult; D000368:Aged; D019405:Cytochrome P-450 CYP11B2 / Q000235:genetics*; D003924:Diabetes Mellitus, Type 2 / Q000453:epidemiology / Q000235:genetics*; D005260:Female; D005602:France / Q000453:epidemiology; D005787:Gene Frequency; D006239:Haplotypes; D006801:Humans; D006973:Hypertension / Q000453:epidemiology / Q000235:genetics*; D015994:Incidence; D008297:Male; D024821:Metabolic Syndrome / Q000453:epidemiology / Q000235:genetics*; D008875:Middle Aged; D020641:Polymorphism, Single Nucleotide; D015995:Prevalence
D019405:Cytochrome P-450 CYP11B2