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The insertion/deletion (I/D) polymorphism in the ACE gene and the A1166C polymorphism in the AT1R gene have been associated with left ventricular remodelling and prognosis after acute myocardial infarction (AMI). We investigated whether these genetic variants associate with impaired left ventricular ejection fraction (LVEF) and increased risk for in-hospital mortality after AMI. Consecutive AMI patients were recruited on admission and were genotyped for the above-mentioned polymorphisms. The frequency of the studied genotypes did not differ significantly between deceased patients and those who survived. The LVEF did not differ among patients with or without the DD genotype (45 +/- 10 vs. 45 +/- 10%, p = 0.892) or the CC genotype (45 +/- 10 vs. 46 +/- 10%, p = 0.859). These data question the role of the studied genotypes in the pathogenesis of AMI and do not support the previously supported hypothesis that these genotypes influence prognosis after AMI., (Copyright 2005 S. Karger AG, Basel.)

We examined the impact of a G-->A mutation at position -75 of the apolipoprotein AI gene promoter in subjects with hypertriglyceridaemia from two racial groups, Caucasians (n = 52) and Japanese (n = 19) compared to their controls (n = 56 and n = 21 respectively). The mutation was genotyped by the polymerase chain reaction and subsequent digestion using HpaII, and BstNI. We found no significant differences in allele frequency in either control-control or case-control comparisons in European and Japanese populations. Linkage disequilibrium was observed between the mutation and the common alleles of two restriction fragment length polymorphisms, MspI and SstI located in the APOA1 and APOC3 genes, respectively, in the Japanese population. On the basis of these results, the G-75-->A mutation is unlikely to be aetiological in predisposing to hypertriglyceridaemia.