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  • Title: Drug-gene interaction between the insertion/deletion polymorphism of the angiotensin-converting enzyme gene and antihypertensive therapy.
    Author: Schelleman H, Klungel OH, van Duijn CM, Witteman JC, Hofman A, de Boer A, Stricker BH.
    Journal: Ann Pharmacother; 2006 Feb; 40(2):212-8. PubMed ID: 16449550.
    Abstract:
    BACKGROUND: Despite the availability of a variety of effective drugs, inadequate control of blood pressure is common. There are some indications that the angiotensin-converting enzyme (ACE) gene modifies the response to antihypertensive drugs, but the results have been inconclusive. OBJECTIVE: To investigate whether the insertion/deletion polymorphism of the ACE gene modifies blood pressure differences among subjects using diuretics, beta-blockers, calcium-channel antagonists, or ACE inhibitors. METHODS: Data were used from the Rotterdam Study, a population-based, prospective, cohort study in the Netherlands, which started in 1990 and included 7983 subjects aged 55 years or older. Data from 3 subsequent cross-sectional investigations were used, as well. Subjects were included if they had high blood pressure during one or more examinations and/or used monotherapy with a diuretic, beta-blocker, calcium-channel antagonist, or ACE inhibitor. A marginal, generalized, linear model was used to assess the association between the mean difference in systolic/diastolic blood pressure and antihypertensive classes stratified by the 3 genotypes. RESULTS: In total, 3025 hypertensive individuals were included, and 6500 measurements of blood pressure were taken. The percentages of DD, ID, and II genotypes were 28.3%, 51.4%, and 20.3%, respectively. The mean differences in systolic blood pressure between the II and DD genotypes were 0.23 mm Hg (95% CI -5.48 to 5.94) for diuretics, -2.41 mm Hg (95% CI -6.72 to 1.90) for beta-blockers, 2.12 mm Hg (95% CI -4.64 to 8.89) for calcium-channel antagonists, and -2.01 mm Hg (95% CI -9.82 to 5.79) for ACE inhibitors. CONCLUSIONS: The adjusted mean difference in diastolic and systolic blood pressure among diuretic, beta-blocker, calcium-channel antagonist, or ACE inhibitor users was not modified by the ACE insertion/deletion polymorphism.
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