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Abstract

¸ñ Àû: ·ÎŸ¹ÙÀÌ·¯½º °¨¿°¿ªÇÐÀÇ º¯È­¸¦ ¿¬±¸Çϱâ À§ÇØ A±º ·ÎŸ¹ÙÀÌ·¯½ºÀÇ VP6 À¯ÀüÀÚ¸¦ ´ëÀå±Õ¿¡ ¹ßÇö½ÃÄÑ È®º¸ÇÑ rVP6 ´Ü¹éÁúÀÌ Ç׿ø¼ºÀÌ ÀÖ´ÂÁö¸¦ È®ÀÎÇÏ°í ÀÌ°ÍÀ» Ç׿øÀ¸·Î ÇÑ È¿¼Ò¸é¿ªÃøÁ¤¹ýÀÌ ·ÎŸ¹ÙÀÌ·¯½º IgG, IgA¿Í IgM Ç×ü¸¦ Á¤·®ÀûÀ¸·Î Æò°¡ÇÒ ¼ö ÀÖ´ÂÁö È®ÀÎÇÏ°íÀÚ ÇÏ¿´´Ù.

¹æ ¹ý: °æ»ó´ëÇб³º´¿ø¿¡¼­ ·ÎŸ¹ÙÀÌ·¯½º °¨¿°À» Áø´Ü ¹ÞÀº ¼Ò¾Æµé Áß Áø´Ü ¹Þ±â Àü, Áø´Ü ´ç½Ã, ȸº¹±â ÀÌÈÄÀÇ ¿¬¼ÓÀûÀÎ Ç÷ûÀ» È®º¸ÇÒ ¼ö ÀÖ¾ú´ø 22¸í¿¡°Ô¼­ 100°³ÀÇ Ç÷ûÀ» °æ»ó´ëÇб³º´¿ø ÀÎüÀÚ¿øÀºÇàÀ¸·ÎºÎÅÍ Á¦°ø¹Þ¾Æ ·ÎŸ¹ÙÀÌ·¯½º VP6 À¯ÀüÀÚ¸¦ Ŭ·Î´× ÇÏ¿© ´ëÀå±Õ¿¡ ¹ßÇö½ÃÄÑ Á¦Á¶ÇÑ rVP6 Ç׿øÀ¸·Î ÇÑ È¿¼Ò¸é¿ªÃøÁ¤¹ýÀ¸·Î IgG, IgA¿Í IgM Ç×ü ¿ª°¡¸¦ ÃøÁ¤ÇÏ¿´´Ù. ÀÌ Áß °Ç°­ÇÑ ½Å»ý¾Æ 4¸í¿¡¼­´Â ¸é¿ª ºí·ÎÆÃÀ» °°ÀÌ ½ÃÇàÇÏ¿´´Ù.

°á °ú: °Ç°­ÇÑ ½Å»ý¾Æ¿Í ¿µÀ¯¾Æ 17¸í¿¡¼­ °¨¿° ÈÄ È®º¸µÈ Ç÷û¿¡¼­ IgG, IgA, IgM Ç×ü Áß ÃÖ¼ÒÇÑ ÇÑ Á¾·ùÀÇ Ç×ü ¿ª°¡ Áõ°¡°¡ µ¿¹ÝµÇ¾î ÀÖ¾ú´Ù. ¸é¿ªÀÌ ÀúÇÏµÈ ¼Ò¾Æ 5¸í Áß 4¸í¿¡¼­´Â IgG Ç×ü ¿ª°¡´Â Áõ°¡µÇ¾úÀ¸³ª IgA Ç×ü ¿ª°¡´Â 2¸í¿¡¼­¸¸ Áõ°¡ÇÏ¿´°í, IgM Ç×ü ¿ª°¡´Â 5¸í ¸ðµÎ Áõ°¡ÇÏÁö ¾Ê¾Ò´Ù. ½Å»ý¾Æ 4¸í¿¡¼­ ½ÃÇàµÈ ¸é¿ª ºí·ÎÆà °Ë»ç¿¡¼­´Â IgM Ç×üÀÎ °æ¿ì´Â È¿¼Ò¸é
¿ªÃøÁ¤¹ýº¸´Ù ¿¹¹ÎÇÏ°Ô Áø´Ü ÃʱâºÎÅÍ 4¸í ¸ðµÎ ¾ç¼ºÀ¸·Î ÆÇÁ¤µÇ¾ú´Ù.

°á ·Ð: A±º ·ÎŸ¹ÙÀÌ·¯½ºÀÇ VP6 À¯ÀüÀÚ¸¦ ´ëÀå±Õ¿¡ ¹ßÇö½ÃÄÑ È®º¸ÇÑ rVP6 ´Ü¹éÁúÀº Ç׿ø¼ºÀÌ ÀÖÀ¸¸ç ÀÌ°ÍÀ» Ç׿øÀ¸·Î ÇÑ È¿¼Ò¸é¿ªÃøÁ¤¹ýÀº ·ÎŸ¹ÙÀÌ·¯½º °¨¿° ÈÄ IgG, IgA, IgM Ç×ü ¿ª°¡ Áõ°¡¸¦ Á¤·®ÀûÀ¸·Î Æò°¡ÇÒ ¼ö ÀÖ¾î Áö¿ª»çȸ¿¡¼­ ¹ß»ýÇÑ ·ÎŸ¹ÙÀÌ·¯½º °¨¿°¿ªÇÐÀÇ º¯È­¸¦ ¿¬±¸Çϴµ¥ À¯¿ëÇÒ °ÍÀ¸·Î ÆǴܵȴÙ.

Purpose:The serologic diagnosis of rotaviral infections is not commonly used in clinical practice, but is used in seroepidemiologic studies. In this study, the usefulness of Escherichia coli-expressed recombinant VP6 proteins of group A rotavirus in the serodiagnosis of rotavirus infections by ELISA was evaluated.

Methods: The recombinant VP6 proteins of group A rotavirus expressed in E. coli Rosetta II strain were purified and identified. One hundred sera from 22 children (4 healthy neonates, 13 healthy children, and 5 immunocompromised children) who had serial sera samples prior to and after rotavirus infections were provided by the Gyeongsang National University Hospital, a member of the National Biobank of Korea. IgG, IgA, and IgM antibodies against rVP6 were analyzed by ELISA in all of the patients and Western blot analysis in 4 neonates.

Results: ELISA tests using rVP6 proteins of group A rotavirus as antigen revealed that IgG, IgA, and IgM antibodies increased after rotaviral infections in most neonates and healthy children. IgG antibodies also increased after rotaviral infections in most immunocompromised children without an adequate increase in IgM or IgA antibodies. Western blot analysis in four neonates revealed very early IgM antibody responses, even in the sera with low optical densities in ELISA tests.

Conclusion: Our study showed that ELISA using rVP6 as an antigen is a valid diagnostic tool for seroepidemiologic studies of rotavirus infections and Western blot analysis is a sensitive test in detecting IgG, IgA, and and IgM antibodies in patients with rotavirus infections.

Å°¿öµå

Rotavirus; VP6; ELISA

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