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Interleukin-1 receptor antagonist gene polymorphism and coronary artery disease.
861 - 866.
Background-Cytokine gene variations are contributory factors in inflammatory pathology. Allele frequencies of interleukin (IL)-1 cluster genes [IL-1A(-889), IL-1B(-511), IL-1B(+3953), IL-1RN Intron 2 VNTR] and tissue necrosis factor (TNF)-alpha gene [TNFA(-308)] were measured in healthy blood donors (healthy control subjects), patients with angiographically normal coronary arteries (patient control subjects), single-vessel coronary disease (SVD), and those with multivessel coronary disease (MVD).Methods and Results-Five hundred fifty-six patients attending for coronary angiography in Sheffield were studied: 130 patient control subjects, 98 SVD, and 328 MVD. Significant associations were tested in an independent population (London) of 350: 57 SVD, 191 MVD, and 102 control subjects. IL-1RN*2 frequency in Sheffield patient control subjects was the same as in 827 healthy control subjects. IL-1RN*2 was significantly overrepresented in Sheffield SVD patients (34% vs 23% in patient control subjects); IL-1RN*2 homozygotes in the SVD population (chi(2) carriage=8.490, 1 df, P=0.0036). This effect was present though not quite significant in the London population (P=0.0603). A summary trend test of the IL-1RN SVD genotype data for Sheffield and London showed a significant association with *2 (P=0.0024). No significant effect of genotype at TL-1RN was observed in the Sheffield or London MVD populations. Genotype distribution analysis comparing the SVD and MVD populations at TL-1RN showed a highly significant trend (P=0.0007) with the use of pooled data. No significant associations were seen for the other polymorphisms.Conclusions-IL-1RN*2 was significantly associated with SVD. A difference in genetic association between SVD and MVD was also apparent.
|Title:||Interleukin-1 receptor antagonist gene polymorphism and coronary artery disease|
|Keywords:||interleukins, genes, coronary artery disease, VASCULAR ENDOTHELIAL-CELLS, HEART-DISEASE, SEVERITY, ASSOCIATION, EXPRESSION, FIBRINOGEN, RISK, MEN|
|UCL classification:||UCL > School of Life and Medical Sciences > Faculty of Population Health Sciences > Institute of Cardiovascular Science|
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