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SCANDINAVIAN JOURNAL OF IMMUNOLOGY
卷 57, 期 5, 页码 480-484出版社
BLACKWELL PUBLISHING LTD
DOI: 10.1046/j.1365-3083.2003.01253.x
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Recent studies have indicated that the interleukin-12/interferon-gamma (IFN-gamma) axis is important in mycobacterial infection susceptibility. Using an intronic (CA) (n) polymorphic microsatellite marker within the IFN-gamma receptor-1 (IFNGR1 ) gene, we have compared the allelic frequencies of this marker in hospitalized tuberculosis patients (n = 120) with that of controls (n = 87) from Rijeka, Croatia. We identified 13 (CA) (n) alleles in the tuberculosis patients, whereas only 10 were found in the controls. A significant difference between one allelic marker and the control group was observed (P = 0.02, 95% confidence interval 0.14-0.94), suggesting a possible protective association. In contrast, several other allelic markers showed a trend towards association with the disease. We also found a trend towards an increased frequency in homozygosity of one allelic marker in patients (11.7%) as compared with controls (4.6%). We conclude that there is no evidence for disease association of the IFNGR1 gene marker in Mendelian-type (single-allele) inheritance. However, our results also suggest that unidentified allelic variations in the IFNGR1 gene might elevate or decrease the risk in this ethnic population, as a part of the multigenic predisposition to tuberculosis.
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