ACE insertion/deletion polymorphism and its relationships to the components of metabolic syndrome in elderly Slovaks.

The purpose of this study was to assess clustering of Metabolic Syndrome components in aged Slovaks, and to investigate whether insertion/deletion (I/D) polymorphism of the human angiotensin-converting enzyme (ACE) gene is associated with this syndrome. Data were available from 374 Slovak participants (200 females and 174 males) ranging in age between 60 and 90 years. ACE I/D polymorphism was determined by PCR amplification of the ACE gene sequence. Metabolic Syndrome was diagnosed according to criteria in the NCEP ATP-III. Elderly males and females differ significantly in the prevalence of Metabolic Syndrome (females 45.1%, males 24.8%). The males and females including subjects with and without metabolic syndrome, respectively, did not differ significantly in the three genotype distributions (p = 0.603 and p = 0.247). The allele frequencies (D = 0.5483, I = 0.4517) in the entire sample fell within the Hardy-Weinberg equilibrium. There was no confirmed association between ACE genotype and phenotypic variation in the recognized risk components for Metabolic Syndrome in elderly Slovaks. Among other factors which may induce a difference in Metabolic Syndrome, significant effect was detected for sex, BMI, HDL, TG, glucose and the ApoB/ApoA1 ratio.

Relationships between blood pressure, polymorphism of angiotensin-converting enzyme (ACE), body composition and biochemical characteristics in elderly Slovaks.

Epidemiological studies have demonstrated that several specific environmental factors and candidate genes influence the human variation in blood pressure. The aim of this study was to investigate variables associated with blood pressure; with a particular emphasis on the differences in insertion/deletion (I/D) polymorphism of the human angiotensin-converting enzyme (ACE), the body composition and the recognized risk factors for atherosclerosis among elderly males and females. A total of 374 participants (174 males and 200 females) aged from 60 to 90 years were recruited from different parts of Slovakia. The elderly were not bed-ridden, nor mentally impaired, they were able to manage their daily activities by themselves. The ACE I/D polymorphism was determined by PCR amplification of the ACE gene sequence. Body composition variables were obtained by bioelectrical impedance analysis, using the BIA 101 soft tissue-body impedance analyzer (Akern, S.r.l.). The subjects were determined to be hypertensive (blood pressure > or = 140/90 mm Hg) or normotensive (blood pressure < or = 140/90 mm Hg ). These two subgroups of males and females did not differ significantly in their mean ages. As expected, the hypertensive subjects of both sexes showed significantly higher mean values in systolic (SBP) and diastolic blood pressure (DBP), in body mass index (BMI), and in the mean values of their plasma glucose and extracellular water (ECW). The genotype distribution and allele frequencies in the whole sample (D = 0.5474, I = 0.4526) fell within the Hardy-Weinberg equilibrium. The frequency of the deleterious D allele in the normotensive (0.5532) and hypertensive (0.5516) subjects was not significantly different. The ACE I/D genotypes did not associate either with the systolic (p = 0.836) or diastolic BP (p = 0.629). From the other variables that may induce differences in blood pressure, a statistical effect was detected for glucose, Na/K, and Apo A1/ApoB ratios and physical activity on SBP, and for ApoA1, physical activity, BMI and total cholesterol on DBP.

Dietary patterns and lifestyle in a sample of a Slovak Romany community.

The aim of this paper is to evaluate dietary habits and behavioural factors related to atherosclerosis in Slovak Romany, the large minority, characterized by high cardiovascular morbidity. The study involved 150 Romany volunteers (68 males, mean age 42.1 +/- 13.9 y and 82 females, mean age 40.9 +/- 13.7 y). Dietary data were obtained by a validated food-requency questionnaire and a single 24-hour dietary recall. The nutrient intake and health behaviour of the Romany population is not consistent with current guidelines for atherosclerosis prevention. The mean intake of fat is higher than the recommended dietary allowance (RDA), especially in males (155.3 % of RDA). In females the intake of alpha-linolenic acid is low, in males the cholesterol content of the food exceeds the acceptable value. The mean intake of protein is higher than the recommendation (males 153% of RDA, females 122.2%), with a high proportion of animal protein. In both sexes the mean intake of vitamins is below the RDA. In comparison to the general population the diet of the Romany males contains significantly more animal protein (p < 0.05), less plant protein (p < 0.05) and folate (p < 0.01). In the diet of the Romany females a significantly lower intake of plant protein (p < 0.05) and vitamin E (p < 0.05) was observed, as well as a lower intake of linoleic acid and iron in both sexes. The cumulation of ten selected cardiovascular risk factors showed that particularly the Romany males could be considered as having more atherogenic profile.

Familial defective apolipoprotein B-100 in Slovakia: are differences in prevalence of familial defective apolipoprotein B-100 explained by ethnicity?

The objective of this study was to examine frequency of familial defective apo-B-100 (FDB, R3500Q mutation) in probands with the phenotype of familial hypercholesterolemia (FH) and in the general population of 40-year-old subjects in Slovakia and to characterize their lipid and clinical criteria and to compare the frequency of FDB with other populations. We identified 35 patients with FDB among 362 probands with clinical diagnosis of FH and two cases of FDB in the 40-year-old cohort of 2323 subjects from general Slovak population. Probands with FDB differed from those with FH only in plasma triglyceride concentrations (1.84+/-1.4 mmol/l versus 1.45+/-0.98 mmol/l, respectively, p<0.01). Evaluation of personal history of premature atherosclerosis did not show any differences (11.4% in FDB versus 20% in FH, p<0.16). The FDB patients had similar manifestation of xanthomatosis as the FH patients (17.1% versus 8.25%, p<0.25). The frequency of FDB of 9.7% found in the FH patients is among the highest of those reported to date. The frequency of R3500Q mutation of 0.09% found in Slovak 40-year-old subjects did not differ significantly from published population molecular data. Our comparison of estimated FDB frequencies with those which were found by DNA analysis demonstrated that estimated frequencies were not only wider in range, but also significantly higher than those which were assessed by the analysis. The definitive answer to the prevalence of FDB and its biochemical and clinical characteristics requires screening of unbiased samples of the general population from different ethnic groups based on molecular genetic methods.

Apolipoprotein E polymorphism in relation to plasma lipid levels and other risk factors of atherosclerosis in two ethnic groups from Slovakia.

The influence of apolipoprotein E (ApoE) genotypes on plasma lipid levels and interaction with other environmental factors was determined in two Slovakian population samples; 146 Romany and 351 Slovak individuals. The two samples differ significantly in the distribution of E3/3 genotypes (p<0.014) and E3/2 (p<0.035). Analysis of variance did not reveal any significant effect of the ApoE genotypes on any of the plasma lipid levels in the Romany individuals. In the Slovak sample the variation in plasma low-density lipoprotein cholesterol (LDL-C) levels was significantly associated with the ApoE genotypes (p=0.012). We detected decreased LDL-C concentrations in males with E2 genotype when compared with E3 and E4 carriers (p=0.008). Further, the E2 genotype was found to be associated with high triglycerides levels (p=0.009). The ethnic samples differ significantly in the prevalence of metabolic syndrome and in the case of males of diabetes. Both the Romany and the Slovak males can be considered as having a more atherogenic profile compared with the females.