The inconsistency of data regarding intrauterine programming of cardiovascular risk factors may be largely caused by genetic predisposition and later lifestyle. We analyzed whether low birth weight and apolipoprotein E (Apo E) polymorphism participate in the onset of hypercholesterolemia in children. Our approach was based on hypothesis that genetically enhanced susceptibility of different individuals might influence the effects of intrauterine programming. Two groups were selected from 2000 children at the beginning of an ongoing study: high-cholesterol group (HCG, n=67) and low-cholesterol group as a control (LCG, n=72). Both groups were divided into tertilles according to birth weight and we compared birth weight and apo E gene polymorphism between and within groups. The birth weight in HCG was 0.3 kg lower than the controls (p<0. 001). The frequency of apoE4 was 31 % in HCG and only 10 % in LCG. The frequency of apoE4+ genotypes was not significantly different between tertilles based on birth weight in HCG. We suppose that intrauterine undernutrition, demonstrated by a lower birth weight, participates in the development of hypercholesterolemia already in childhood. The effects of low birth weight and the candidate gene - apoE, are synergic., P. Szitányi, H. Pistulková, J. A. Hubáček, H. Stuchlíková, R. Poledne., and Obsahuje bibliografii a bibliografické odkazy
Cardiovascular disease is a major cause of morbidity and mortality in young adults with end-stage renal disease (ESRD), but its basis is still not well understood. We therefore evaluated the determinants of atherosclerosis in children with ESRD. A total of 37 children with ESRD (with 31 who had undergone transplantation) were examined and compared to a control group comprising 22 healthy children. The common carotid intimamedia thickness (CIMT) was measured by ultrasound as a marker of preclinical atherosclerosis. The association of CIMT with anthropometrical data, blood pressure, plasma lipid levels, and other biochemical parameters potentially related to cardiovascular disease was evaluated. Children with ESRD had significantly higher CIMT, blood pressure, and levels of lipoprotein (a), urea, creatinine, ferritin, homocysteine, and serum uric acid as well as significantly lower values of apolipoprotein A. The atherogenic index of plasma (log(triglycerides/HDL cholesterol)) was also higher in patients with ESRD; however, this difference reached only borderline significance. In addition, a negative correlation was found between CIMT and serum albumin and bilirubin in the ESRD group, and this correlation was independent of age and body mass index. In the control group, a significant positive correlation was observed between CIMT and ferritin levels. Factors other than traditional cardiovascular properties, such as the antioxidative capacity of circulating blood, may be of importance during the early stages of atherosclerosis in children with endstage renal disease., H. M. Dvořáková ... [et al.]., and Obsahuje seznam literatury
A low birth weight is a new risk factor for the development of premature atherosclerosis. The effect of intrauterine undernutrition on hypercholesterolemia in later life was studied in an experimental model using the Prague Hereditary Hypercholesterolemic (PHHC) rat. Compared to animals in the control group (Wistar rats), animals with an increased sensitivity to high-cholesterol diet (PHHC rats) display hypercholesterolemia. Only in PHHC animals, individuals undernourished in their intrauterine life (hypotrophic group, HG) had a significantly higher total cholesterol, compared with individuals without food restriction in pregnancy (eutrophic group, EG). Restricted food intake in pregnancy led to smaller nests and a decreased number of pups in each litter. We found no significant diferences in birth weight between HG and EG. In spite of similar birth weights in PHHC and Wistar rats, intrauterine undernutrition caused an increase in cholesterolemia in the HG group of the PHHC rats. The effect of intrauterine undernutrition on the development of hypercholesterolemia will most likely play a role in individuals with geneticaly determined increased susceptibility to a high-cholesterol diet. The use of this model of intrauterine undernutrition for the study of hypercholesterolemia has proved to be feasible., P. Szitányi, J. Hanzlová, R. Poledne., and Obsahuje bibliografii
It is believed that atherogenesis is a multifactorial process, which could already start in utero. Development of atherosclerosis progresses over decades and leads to the cardiovascular morbidity and mortality in adulthood. At present, we have no exact explanation for all the risk factors acting in the pathogenesis of atherosclerosis. This review should provide an overview about the possible role of intrauterine undernutrition in the development of risk factors for cardiovascular disease. Intrauterine undernutrition leads to changes in fetal growth and metabolism and programs later development of some of these risk factors. A number of experimental and human studies indicates that hypertension as well as impaired cholesterol and glucose metabolism are affected by intrauterine growth. Intrauterine undernutrition plays an important role and acts synergistically with numerous genetic and environmental factors in the development of atherosclerosis. There is evidence that undernutrition of the fetus has permanent effects on the health status of human individuals., P. Szitányi, J. Janda, R. Poledne., and Obsahuje bibliografii