Abstract
Several lines of evidence indicate that inflammatory processes play pivotal role in the development of intracranial aneurysm (IA). Recently, polymorphisms in the interleukin-12 (IL-12) gene were shown to be associated with immune-mediated inflammatory disease. The aim of this study was to investigate the interactions of IL-12A and IL-12B polymorphisms on the risk of IA in a Chinese population. A total of 422 individuals (including 164 patients with IA and 258 controls) were involved in the study. The polymorphisms (i.e., rs2243115 and rs568408 in IL-12A and rs3212227 in IL-12B) were genotyped by polymerase chain reaction–restriction fragment length polymorphism assay and DNA sequencing. We found an association of the AC/CC genotypes and C allele of IL-12B rs3212227 with an increased risk of IA, compared with the AA genotype and A allele (AC/CC vs. AA: OR = 2.09, 95 % CI: 1.29–3.38; C vs. A: OR = 1.45, 95 % CI: 1.10–1.91). Moreover, a significant gene interaction of IL-12A and IL-12B was evident on the risk of IA, and subjects carrying variant genotypes of IL-12B rs3212227 had an increased risk of IA. In the stratified analysis by gender, the IL-12B rs3212227 AC/CC genotypes had an increased risk of IA compared with the AA genotype in male patients (AC/CC vs. AA: OR = 4.63, 95 % CI: 1.92–11.16). These findings suggest that the IL-12A and IL-12B independently and jointly be involved in the susceptibility to IA.
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Acknowledgments
This work was supported by the National Natural Science Foundation of China (No. 30801317, 30901720), and Science & Technology Pillar Program of Sichuan Province (No. 2010SZ0122).
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None of the authors has any potential financial conflict of interest related to this manuscript.
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Li-Juan Li and **n-Min Pan contributed equally to this work.
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Li, LJ., Pan, XM., Sima, X. et al. Interactions of interleukin-12A and interleukin-12B polymorphisms on the risk of intracranial aneurysm. Mol Biol Rep 39, 11217–11223 (2012). https://doi.org/10.1007/s11033-012-2031-z
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DOI: https://doi.org/10.1007/s11033-012-2031-z