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  • Title: Multilocus approach to cardiovascular risk.
    Author: Pallaud C, Maurice M, Cheng S, Grow M, Aguillon D, Sass C, Siest G, Visvikis S.
    Journal: Scand J Clin Lab Invest Suppl; 1999; 230():168-76. PubMed ID: 10389215.
    Abstract:
    Until now, our familial studies have showed that shared genetic and environmental factors are involved on lipid parameters variability. More precisely, being working on 119 families we have showed that: a) The apolipoprotein E (apo E) common polymorphism is involved in the total cholesterol, low density lipoprotein cholesterol (LDL-Chol), apo E, apo B levels variability, b) the apolipoprotein A-IV gene had no effect on lipid metabolism parameters variability, apo A-IV levels included, c) the apolipoprotein B gene was associated with total cholesterol, high density lipoprotein cholesterol, LDL-Chol, triglycerides and apo B levels genetic variability, d) the lipoproteine lipase (LPL) gene was responsible for 6.5% of the triglycerides variability, e) the apo E and LPL 447 polymorphisms influence in conjunction lipid parameters. These preliminary results on effects and combination effects of polymorphic genes show the interest of a multilocus approach. We have used in a subgroup of 416 individuals of a familial cohort (Stanislas Cohort) a prototype assay that genotypes a panel of 35 polymorphic sites on 15 candidate genes of Cardiovascular diseases. Each sample is amplified by two multiplex polymerase chain reactions, then hybridized to an array of immobilized, oligonucleotide probes. The frequencies of the rare alleles were in agreement with those reported by others in caucasian populations. The realisation of this multiplex assay in the 1,006 families of the Stanislas Cohort, which is underway, will allow us a better understanding of the inter-individual variability of lipids and will contribute to the determination of the genetic susceptibility of one's individual to cardiovascular risk.
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