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Infliximab: ºÒÀÀ¼º Å©·Ðº´ Ä¡·á¹ýÀ¸·Î¼­ÀÇ À¯¿ë¼º°ú Top-down °üÇØ À¯µµ ¿ä¹ýÀ¸·Î¼­ÀÇ °¡´É¼º Infliximab: The Benefit for Refractory Crohn Disease and Top-down Induction Therapy in Severe Crohn Disease

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ÀÌÁöÇö ( Lee Jee-Hyun ) 
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ÃÖ¿¬È£ ( Choe Yon-Ho ) 
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ÀÌÇØÁ¤ ( Lee Hae-Jeong ) 
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¹Ú¼ºÀº ( Park Sung-Eun ) 
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Abstract

¸ñ Àû: Á¾¾ç ±«»ç ÀÎÀÚ(TNF-¥á)¿¡ ´ëÇÑ ´Ü Ŭ·Ð Ç×üÀÎ infliximabÀ¸·Î ¼Ò¾ÆÀÇ ³­Ä¡¼º Å©·Ðº´¿¡¼­ÀÇ Ä¡·á¿Í °üÇØ À¯µµ Ä¡·áÁ¦·Î¼­ÀÇ È¿°ú¿¡ ´ëÇÑ Ä¡·á °æÇèÀ» º¸°íÇÏ°íÀÚ ÇÑ´Ù.

¹æ ¹ý: 2001³â 3¿ùºÎÅÍ 2007³â 8¿ù±îÁö »ï¼º¼­¿ïº´¿ø¿¡¼­ Å©·Ðº´À¸·Î Áø´Ü ¹ÞÀº ¼Ò¾Æ û¼Ò³â Áß ±âÁ¸ ¾àÁ¦¿¡ °üÇØ À¯µµµÇÁö ¾Ê´Â ºÒÀÀ¼º Å©·Ðº´(½ºÅ×·ÎÀ̵å ÀÇÁ¸¼º Æ÷ÇÔ)°ú ÁßÁõ È°¼º Å©·Ðº´À» °¡Áø 16¸í¿¡¼­ infliximab (Remicade¨Þ) 5 mg/kg¸¦ °üÇØ À¯µµ(0, 2, 8ÁÖ)ÁÖÀÔÇÏ¿´À¸¸ç ÇÊ¿äÇÑ °æ¿ì 8ÁÖ °£°ÝÀÇ À¯Áö Ä¡·á¸¦ ½ÃÇàÇÏ¿´°í ´©°ø¼º Å©·Ðº´ÀÇ °æ¿ì ´©°øÀÇ »óÅ¿¡ µû¶ó ºñÁ¤±âÀûÀ¸·Î ÁÖÀÔÇÏ¿´´Ù. ´ë»ó ȯÀÚµéÀÇ Æ¯Â¡ ¹× Ä¡·á Àü ÈÄÀÇ Áúº´ È°¼ºµµ, Hct, ESR, CRP, albuminÀ» paired t test¸¦ ÀÌ¿ëÇÏ¿© ºñ±³ÇÏ¿´´Ù.

°á °ú: 16¸íÀÇ ³²³àºñ´Â 13/3ÀÌ°í Áß¾Ó ¿¬·ÉÀº 13¼¼(21°³¿ù¡­15¼¼)¿´´Ù. Åõ¿© ÀûÀÀÁõÀº ºÒÀÀ¼º Å©·Ðº´ 7¸í(½ºÅ×·ÎÀ̵å ÀÇÁ¸¼º 3¸í Æ÷ÇÔ), ÁßÁõ È°¼ºÇü Å©·Ðº´ÀÇ °üÇØ À¯µµ 7¸í, ´©°ø¼º Å©·Ðº´ 2¸íÀ̾ú´Ù. Infliximab Åõ¿© Ƚ¼ö´Â Æò±Õ 5.19¡¾3.41ȸ(3¡­15ȸ)¿´°í Å©·Ðº´ Áø´Ü ÈÄ infliximab Ä¡·á ½ÃÇà±îÁöÀÇ ±â°£ Áß¾Ó°ªÀº 6.5°³¿ù (1°³¿ù¡­54°³¿ù)À̾ú´Ù. ȯÀÚµéÀÇ infliximab Åõ¿© ÀüPCDAI (pediatric crohn disease activity index)´Â Æò±Õ 34.19¡¾14.96À̾úÀ¸¸ç ¸¶Áö¸· Åõ¿© ÈÄ 2¡­4ÁÖ À̳» PCDAI´Â 6.88¡¾10.31·Î Åõ¿© ÈÄ Åë°èÀûÀ¸·Î À¯ÀÇÇÑ È£ÀüÀ» º¸¿´´Ù(p=0.000). ´Ù¸¥ Ç÷¾×ÇÐÀû Ç¥ÁöÀÚ·Î ESR (p=0.000), serum albumin (p=0.016), CRP (p=0.009)°¡ Åõ¿© ÀüÈÄ·Î ÀÇ¹Ì Àִ ȣÀüÀ» º¸¿´À¸¸ç ÀûÇ÷±¸ ¿ëÀû·ü(hematocrit)ÀÇ È£ÀüÀº Åë°èÀûÀ¸·Î À¯ÀÇÇÏÁö ¾Ê¾Ò´Ù (p=0.075). °í½ÄÀûÀÎ Ä¡·á¿¡ °üÇØ À¯µµ µÇÁö ¾Ê¾Ò´ø ³­Ä¡¼º ȯÀÚ 4¸í Áß 2¸í¿¡¼­ °üÇØ À¯µµ°¡ °¡´ÉÇÏ¿´À¸¸ç ½ºÅ×·ÎÀ̵å ÀÇÁ¸¼º ȯÀÚ 3¸í Áß 2¸í¿¡¼­ ½ºÅ×·ÎÀ̵å Áß´Ü 1¸í¿¡¼­ ½ºÅ×·ÎÀÌµå °¨·®ÀÌ °¡´ÉÇÏ¿´´Ù. ´©°øÀÌ µ¿¹ÝµÇ°Å³ª Áߵ ÀÌ»óÀÇ Å©·Ðº´¿¡¼­ ½ºÅ×·ÎÀ̵带 Æ÷ÇÔÇÏ´Â ´Ù¸¥ ¸é¿ª Á¶ÀýÁ¦ »ç¿ë Àü¿¡ top-down ¿ä¹ýÀ» ½ÃÇàÇÑ 7¸í ¸ðµÎ¿¡¼­ 6ÁÖ À̳»¿¡ °üÇØ°¡ µÇ¾ú´Ù. ³­Ä¡¼º ´©°ø Ä¡·á¿¡¼­µµ 10¸í Áß 9¸í¿¡¼­ È£ÀüµÇ¾ú´Ù.

°á ·Ð: InfliximabÀ» »ç¿ëÇÏ¿© ¼Ò¾Æ ºÒÀÀ¼º Å©·Ðº´¿¡¼­ °üÇØ À¯µµ¿Í À¯Áö ¹× ½ºÅ×·ÎÀÌµå °¨·® ¶Ç´Â Áß´ÜÀÌ °¡´ÉÇÏ¿´À¸¸ç Áߵ ÀÌ»óÀÇ Å©·Ðº´¿¡¼­ top-down °üÇØ ¿ä¹ýÀ¸·Îµµ ºñ±³Àû È¿°úÀûÀ̾ú´Ù. ¾ÕÀ¸·Î Àå±â°£ÀÇ ÃßÀû °üÂûÀ» ÅëÇÑ È¿°ú ÆÇÁ¤ ¹× ºÎÀÛ¿ë °üÂûÀ» ¿äÇÑ´Ù.

Purpose: The aim of this study is to report the efficacy of infliximab, a monoclonal antibody directed against tumor necrosis factor alpha which is used for both treatment of refractory pediatric Crohn disease (CD) and induction of remission.

Methods: Among pediatric patients who were diagnosed with CD at Samsung Medical Center between March 2001 and August 2007, a total of 16 patients were given infliximab to treat conventional therapy- resistant refractory CD and severe active CD for induction of remission. Patients needing maintenance therapy were treated with an infliximab infusion every 8 weeks, and fistulizing CD patients occasionally received the infusion upon the condition that a fistula developed. The efficacy of treatment was assessed by comparing the Pediatric Crohn Disease Activity Index (PCDAI), Hct, ESR, CRP, and serum albumin levels using paired t-test.

Results: The male/female ratio was 13£º3, and the median age was 13 years (range, 21 months¡­15 years). The patients included 7 cases of therapy-resistant refractory CD, 7 cases of severe active CD, and 2 cases of fistulizing CD. Mean PCDAI before infliximab therapy was 34.19¡¾14.96, and mean follow-up PCDAI within 2 to 4 weeks after the last infusion was significantly lower, at 6.88¡¾10.31 (p= 0.000). Hematological markers such as ESR (p=0.000), serum albumin (p=0.016), and CRP (p=0.009) also improved significantly after infusion. Remission was achieved in 2 of 4 patients refractory to conventional therapy. Among 3 steroid-dependent patients, 2 were able to discontinue steroid therapy, and dose reduction was possible in 1 patient. Remission after top-down therapy without prior use of other immunomodulators was achieved in 6 weeks in all 7 of the patients who had severe CD. Nine of ten refractory fistulizing CD patients also showed improvement after infliximab therapy.

Conclusion: Infliximab was effective in pediatric refractory CD for induction of remission and maintenance therapy, as well as in severe CD for top-down induction therapy. Furthermore, infliximab has contributed to steroid cessation and dose reduction. Long-term follow-up evaluation is needed to determine safety and efficacy of infliximab in the future. (Korean J Pediatr Gastroenterol Nutr 2008; 11: 28¡­35)

Å°¿öµå

Crohn disease;Infliximab;Children;Top-down treatment

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