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Disease Markers
Volume 24, Issue 2, Pages 81-88

Protective Effect of R Allele of PON1 Gene on the Coronary Artery Disease in the Presence of Specific Genetic Background

Anna Balcerzyk,1 Iwona Zak,1 and Jolanta Krauze2

1Department of Biochemistry and Medical Genetics, Medical University of Silesia, Medykow Str 18, 40-752 Katowice, Poland
2The First Department of Cardiology, Medical University of Silesia, Ziolowa Str 45/47, 40-635 Katowice, Poland

Received 7 January 2008; Accepted 7 January 2008

Copyright © 2008 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Background: Genetic susceptibility to CAD may be determined by polymorphic variants of genes encoding isoforms involved in the processes important in the pathogenesis of atherosclerosis, including lipids disorders. Participation of single polymorphic variants is relatively small, however its significance may increase in the presence of specific genetic or environmental background.

Aim: The aim of the study was an evaluation a possible association between single polymorphic variants of PON1, APOE, ABCA1 and PPARA genes and CAD and looking for specific multigene genotype patterns which differentiate study groups.

Materials and methods: We studied 358 subjects:178 patients with angiographically confirmed CAD and 180 blood donors without history of CAD. Polymorphisms were genotyped using PCR-RFLP method.

Results: We observed statistically significant differences in the frequencies of R allele and R allele carriers of PON1 gene between CAD and controls. The distribution of genotypes and alleles of other analyzed genes did not differentiate the study groups, however the presence of specific genotypes (APOE– ɛ3ɛ3, ɛ3ɛ2, ABCA1 – AG, PPARA – GG) increased the protective effect of R allele.

Conclusion: The present study revealed an independent protective association between carrier-state of PON1 R allele and CAD. This protective effect was especially strong in the presence of specific genotype arrangements of other analyzed genes.