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  • Title: The Gln/Arg polymorphism of human paraoxonase (PON 192) is not related to myocardial infarction in the ECTIM Study.
    Author: Herrmann SM, Blanc H, Poirier O, Arveiler D, Luc G, Evans A, Marques-Vidal P, Bard JM, Cambien F.
    Journal: Atherosclerosis; 1996 Oct 25; 126(2):299-303. PubMed ID: 8902155.
    Abstract:
    Paraoxonase is a high-density-lipoprotein associated enzyme capable of hydrolyzing lipid peroxides, which has been suggested to contribute to atherosclerosis and coronary heart disease (CHD). We studied the Gln/Arg polymorphism affecting codon 192 of human paraoxonase (PON 192) to determine whether this polymorphism, which is associated with serum paraoxonase (PON) activity, represents a risk factor for myocardial infarction (MI). The PON 192 polymorphism was analysed in 642 male patients with myocardial infarction and 701 age-matched controls participating in the ECTIM Study (Etude Cas-Témoins de l'Infarctus du Myocarde). The frequency of the Gln allele was 0.69 in cases and 0.70 in controls (ns). The frequency of the PON 192/Arg allele in 405 MI patients who underwent coronary angiography was 0.295, 0.323 and 0.331, respectively in those with 1, 2 or 3 stenosed arteries (stenosis > 50%) (ns). The mean levels of several plasma lipids, lipoproteins and apolipoproteins were compared between the 3 PON genotypes and no difference was observed. The PON 192 polymorphism was unrelated to MI, the severity of coronary atherosclerosis and to plasma levels of several lipid variables.
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