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ÀÔ·Â 2007.03.02 10:18

ÀÓ½ÅÁß Èí¿¬ÀÌ Æ¯ÀÌ À¯ÀüÀÚ º¯À̸¦ °¡Áø ¾ÆÀ̵鿡¼­ õ½ÄÀ» ÀÏÀ¸Å³ À§Ç輺ÀÌ Å« °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ÀÎÅÍ·çŲ-1 ¼ö¿ëü ±æÇ×Á¦(interleukin-1 receptor antagonist)´Â °­ÇÑ Ç׿°Áõ ÀÛ¿ëÀ» °¡Áö´Â »çÀÌÅäÄ«ÀÎÀÌ´Ù.

IL1RN  À¯ÀüÀÚÀÇ º¯ÀÌ°¡ »ý°åÀ» °æ¿ì ´Ü¹éÁúÀÇ È¿À²¼ºÀÌ °¨¼ÒµÅ ±âµµ ¿°ÁõÀ» ÀÏÀ¸Å³ ¼ö ÀÖ´Ù´Â ¿¬±¸°á°ú°¡ ³ª¿Ô´Ù. ¹Ì½Ã°Ç ÁÖ¸³´ëÇÐ ÀÌ¿öÆ® ¹Ú»çÆÀÀº IL1RN  À¯ÀüÀÚÀÇ º¯ÀÌ¿Í Ãµ½Ä, ±âµµ°ú¹Î¼º¿¡ ´ëÇÑ °ü·Ã¼º¿¡ ´ëÇØ Á¶»çÇß´Ù.

ÀÌ ¿¬±¸´Â Àü¿¡ õ½ÄÀ» ¾Î°í ÀÖ¾ú°Å³ª ºñ½ÁÇÑ Áõ»óÀ» °¡Áø 1, 2, 4, 10¼¼ ¿¬·ÉÀÇ ¾ÆÀ̵éÀ» ÅëÇØ ÀÌ·ïÁ³´Ù. ¿¬±¸ °á°ú ´ÜÀÏ À¯ÀüÀÚ º¯À̸¸À¸·Î´Â õ½ÄÀ» À¯¹ßÇÏÁö ¾Ê¾ÒÁö¸¸ ÀÌ À¯ÀüÀÚ º¯ÀÌ°¡ ÀÖÀ» ¶§ ÀӽŠÁß ¾ö¸¶ÀÇ Èí¿¬¿¡ ÀÇÇØ Ãµ½ÄÀÌ À¯¹ßµÉ È®·üÀÌ ³ôÀº °ÍÀ¸·Î ³ªÅ¸³µ´Ù.

¿¬±¸ÆÀÀº IL1RN ÀÇ ´ÜÀÏÀ¯ÀüÀÚº¯ÀÌ¿Í ¸ðüÀÇ ÀӽŠÁß Èí¿¬ÀÌ ¾ÆÀÌ°¡ ù 10³â Áß Ãµ½ÄÀ» À¯¹ßÇÒ ¼ö ÀÖ´Ù´Â °á°ú¸¦ ¹ßÇ¥Çß´Ù.

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Interleukin-1 receptor antagonist is a potent anti-inflammatory cytokine. We tested for the association of human IL1RN gene polymorphisms with asthma, bronchial hyperresponsiveness (BHR) and forced expiratory volume in 1 second/forced vital capacity (FEV1/FVC) ratio. To investigate a gene-smoking interaction, we stratified by environmental tobacco smoke exposure (ETS).

We completely genotyped three IL1RN single nucleotide polymorphisms (SNPs) in an unselected subset (n=921) of the Isle of Wight birth cohort, which has previously been evaluated for asthma and related manifestations at ages 1, 2, 4 and 10 years. We used logistic regression and repeated measurement models for tests of association using a representative SNP rs2234678, as all the SNPs we tested were in strong linkage disequilibrium.

In the overall analysis, the SNP rs2234678 was not associated with asthma. However, in the stratum with maternal smoking during pregnancy the rs2234678 GG genotype significantly increased the relative risk of asthma in children, both in analyses of repeated asthma occurrences (OR 4.43, CI 1.62-12.1, p=0.0037) and persistent asthma (OR 4.53, CI 1.69-12.1, p=0.0025).

In conclusion, our results show that in the first decade of life, the gene-environment interaction of the IL1RN SNP rs2234678 and maternal smoking during pregnancy increased the risk for childhood asthma.

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