Abstract:
:1. Elevated plasma lipoprotein (a) (Lp(a)) concentrations have been correlated with an increased risk of premature cardiovascular disease. The plasma Lp(a) concentration is quantitatively heritable and the apolipoprotein (Apo) A gene is known as a major locus-determining Lp(a) concentration. 2. The aim of the present study was to evaluate the genetic effect of polymorphisms in the 5'-untranslated region (UTR) of the ApoA gene on plasma concentrations of Lp(a). 3. We analysed two sequence variations in the 5'-UTR, a pentanucleotide repeat (PNR) polymorphism and haplotypes composed of three single base substitutions, in 325 Japanese subjects. The ApoA size polymorphism was also analysed by western blotting. 4. The plasma Lp(a) concentration was inversely correlated with the size of the ApoA molecule. Both PNR and the haplotype polymorphisms had significant effects on serum Lp(a) concentrations (P = 0.001 and 0.004, respectively) when the effects were evaluated by ANCOVA using the ApoA size polymorphism as a covariate. 5. When a stratified subpopulation with a larger ApoA size was analysed, both variations influenced or tended to influence the serum Lp(a) concentration, confirming the results of the ANCOVA. 6. Pentanucleotide repeat showed a tight linkage disequilibrium with the haplotypes. This disequilibrium may account for the apparent effects of PNR on Lp(a) concentrations.
journal_name
Clin Exp Pharmacol Physioljournal_title
Clinical and experimental pharmacology & physiologyauthors
Park HY,Nabika T,Notsu Y,Kobayashi S,Masuda Jdoi
10.1046/j.1440-1681.1999.03033.xkeywords:
subject
Has Abstractpub_date
1999-04-01 00:00:00pages
304-8issue
4eissn
0305-1870issn
1440-1681journal_volume
26pub_type
杂志文章abstract::Subendocardial viability ratio (SEVR) is a reliable index of myocardial supply-workload balance. This study sought to investigate whether overweight/obese children and adolescents have altered SEVR and to identify which are the associated factors. This cross-sectional study involved 789 individuals. Central haemodynam...
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