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© Research
Publication : Journal of hypertension

Gene polymorphisms of the renin-angiotensin system in relation to hypertension and parental history of myocardial infarction and stroke: the PEGASE study. Projet d’Etude des Gènes de l’Hypertension Artérielle Sévère à modérée Essentielle

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Journal of hypertension - 01 Jan 1998

Tiret L, Blanc H, Ruidavets JB, Arveiler D, Luc G, Jeunemaitre X, Tichet J, Mallet C, Poirier O, Plouin PF, Cambien F

Link to Pubmed [PMID] – 9533415

J. Hypertens. 1998 Jan;16(1):37-44

OBJECTIVE: To investigate a possible involvement of polymorphisms of the renin-angiotensin system in predisposition to moderate and severe hypertension and their relationship to parental histories of myocardial infarction and stroke.

METHODS: Hypertensive cases (453 men, 326 women) were patients followed up by general practitioners for established hypertension. Inclusion criteria were an age of onset of hypertension or = 105 mmHg without antihypertensive medication or > or = 100 mmHg under treatment. Normotensive controls were selected from population-based samples (362 men) and during a preventative medicine visit (170 women). Polymorphisms of the angiotensinogen gene (AGT M235T and T174M), the angiotensin I converting enzyme gene (ACE I/D), and the angiotensin II type 1 receptor gene (AGT1R A1166C) were investigated.

RESULTS: The AGTT235 allele prevalence was higher among male hypertensive cases than it was among controls (0.46 versus 0.40, P = 0.01) and a similar trend was observed with female cases whose hypertension had been diagnosed before they were aged 45 years (0.44 versus 0.38, P = 0.20). The AGT1R C1166 allele prevalence was higher among female hypertensives than it was among controls (0.30 versus 0.23, P = 0.03) but no such difference was observed for men. The AGT T174M and ACE I/D polymorphisms were not associated with hypertension. Hypertensive patients reporting a parental history of myocardial infarction before age 60 years had a higher prevalence of the ACE D allele than did those without such a parental history (0.68 versus 0.56, P = 0.01). The ACE D allele prevalence was also greater among patients reporting a parental history of stroke incidence before age 65 years (0.66 versus 0.57, P = 0.05).

CONCLUSIONS: These results support the hypothesis that the AGT gene plays a role in predisposition to hypertension and that the ACE gene plays a role in predisposition to acute ischemic events.

http://www.ncbi.nlm.nih.gov/pubmed/9533415