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  • Title: [Association between angiotensin converting enzyme gene, chymase gene and regression of left ventricular hypertrophy in patients treated with angiotensin converting enzyme inhibitors].
    Author: He H, Li LM, Cao WH, Liu MZ, Sun NL, Lü J, Hu YH.
    Journal: Zhonghua Liu Xing Bing Xue Za Zhi; 2004 Sep; 25(9):756-60. PubMed ID: 15555355.
    Abstract:
    OBJECTIVE: To investigate the association between insertion/deletion (I/D) polymorphism of the angiotensin converting enzyme (ACE) gene and the A/B polymorphism of the chymase (CMA) gene with regression of left ventricular hypertrophy (LVH) in patients with essential hypertension and left ventricular hypertrophy. The study subjects had been participants in along-term trial of therapy with an ACE inhibitor. METHODS: Follow-up data of 157 patients with essential hypertension and left ventricular hypertrophy were collected. DNA fragments of ACE gene and CMA gene were amplified by PCR and analysed by RFLP. LVDd, IVST and LVPWT were measured by Ultrasonic Cardiogram (UCG). RESULTS: (1) When long-term treatment with Benazepril was carried out, the blood pressure was markedly decreased and the heart rate was maintained steadily. (2) Regression of left ventricular hypertrophy was improved. (3) The magnitudes of regression of LVM and LVMI during therapy were greater in the DD group than in the II and ID group. No significant differences of other indices were found in the different genotype groups of ACE. (4) No significant differences of all indices were found in the different genotype groups of CMA. (5) No interaction appeared between the genotypes of the ACE and the genotypes of the CMA. CONCLUSION: Hypertensive patients with DD genotype were more likely to have regression of left ventricular hypertrophy when treated with ACE inhibitors than patients with other ACE genotypes. No evidence was found to support an association between CMA genotype and regression of LVH in those patients.
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