There were observed 45 patients with ishemic heart desease and/or hypertensionwith paroxysmal or persistent nonvalvular AF, without significant structural myocardial damage (82% male), mean age 54 (35; 70) years, that consisted group 1. The second – comparison group – included 39 relatively healthy patient without cardiovascular disease ((54% male), mean age 50 (39; 64) years). Clinical data, echocardiography were assessed as well as –344 T/C gene CYP11B2 polymorphism and aldosteronsynthase plasma concentration. It was revealed that in patients with AF the frequency of T/T genotype and T allele was significantly higher than in the group of relatively healthy patients. In patients with AF the –344 CC genotype of the aldosterone synthase promoter prevails in group with left ventricular (LV) hypertrophy, whereas the frequency of the C- and T-allele didn’t differ. There were no differences between nucleotide polymorphism groups and aldosteronsynthase plasma level. Aldosteronsynthase plasma level did not differ between patients with AF and relatively healthy group. So in patients with AF it was not assosiated with LV hypertrophy.
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