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Áٱ⼼Æ÷ (Stem Cell)´Â ºÐÈ­´É·Â (Differentiation), ÀÚ°¡Àç»ý´É·Â (Self-renewal) µîÀÇ °íÀ¯ÇÑ Æ¯¼ºÀ» Áö´Ï°í ¡®¹ÌºÐÈ­ ¼¼Æ÷¡¯·Î ÀÎü¸¦ ±¸¼ºÇÏ´Â ´Ù¾çÇÑ Á¶Á÷À¸·Î ºÐÈ­ÇÒ ¼ö ÀÖ´Â ¼¼Æ÷ÀÌ´Ù. Áٱ⼼Æ÷´Â Áúº´ÀÇ º¸Á¸Àû Ä¡·á¿¡¼­ ±Ùº»Àû Ä¡·á¸¦ °¡´ÉÇÏ°Ô ÇÏ´Â Àç»ýÀÇ·á (regenerative medicine) ºÐ¾ß¿¡¼­ °¡Àå Áß¿äÇÑ ¿¬±¸ ºÐ¾ß·Î ÁÖ¸ñ ¹Þ°í ÀÖ´Ù. Áٱ⼼Æ÷´Â ºÐÈ­ °¡´É¼ºÀ» ±âÁØÀ¸·Î ÀÎü¸¦ ±¸¼ºÇÏ´Â »ï¹è¿±ÀÇ ¸ðµç ¼¼Æ÷·Î ºÐÈ­°¡ °¡´ÉÇÑ ÀüºÐÈ­´É Áٱ⼼Æ÷ (Pluripotent stem cell)°ú ƯÁ¤ °èÅë ¹üÀ§ ¾ÈÀÇ ¼¼Æ÷·Î ºÐÈ­ °¡´ÉÇÑ ´ÙºÐÈ­´É Áٱ⼼Æ÷ (Multipotent stem cell)·Î ±¸ºÐµÈ´Ù. ÀÌ Áß ´Ù¾çÇÑ ¼ºÃ¼ Á¶Á÷¿¡¼­ ȹµæÀÌ °¡´ÉÇÑ Áß°£ ¹è¿± Áٱ⼼Æ÷ (Mesenchymal stem cell; MSC)´Â ±Ù ¼¼Æ÷, °ñ Çü¼º ¼¼Æ÷, Áö¹æ ¼¼Æ÷ µî Á߹迱ÀÇ ´Ù¾çÇÑ ¼¼Æ÷·Î ºÐÈ­ÇÒ ¼ö ÀÖ´Â ´ÙºÐÈ­´É Áٱ⼼Æ÷ÀÌ´Ù. MSC Áٱ⼼Æ÷´Â ÀüºÐÈ­´É Áٱ⼼Æ÷°¡ °¡Áö°í ÀÖ´Â ¾Ï À¯¹ß¼º °¡´É¼ºÀÌ ³·À¸¸ç, ´Ù¸¥ ¼ºÃ¼ Áٱ⼼Æ÷¿Í ºñ±³ÇÏ¿© Áõ½Ä´ÉÀÌ ¿ì¼öÇÏ¸ç ´Ù¾çÇÑ ¼¼Æ÷·ÎÀÇ ´ÙºÐÈ­´ÉÀ» °¡Áö°í ÀÖ°í, ¼ºÃ¼ Á¶Á÷ÀÇ ´Ù¼ö¿¡¼­ äÃë°¡ °¡´ÉÇÏ´Ù. MSC Áٱ⼼Æ÷´Â »ýü À̽ÄÀ» ÅëÇÏ¿© ¼Õ»ó ¼¼Æ÷¸¦ Àç»ýÇÏ°í, ¿°Áõ ¹ÝÀÀ °¨¼Ò, Á¶Á÷ ¼¶À¯È­ (tissue fibrosis) ¿¹¹æ, Ç÷°ü »ý¼º°ú ³»À缺 Áٱ⼼Æ÷ (Endogenous progenitor cell)À» È°¼ºÈ­ÇÏ´Â µî ´Ù¾çÇÑ Ä¡·á ´É·ÂÀ» °¡Áö°í ÀÖÀ¸¸ç, À¯ÀüÀÚ¿Í ¾à¹° Àü´Þ¿¡µµ ÀûÇÕÇÏ´Ù.[1-3] Àü¼¼°è Áٱ⼼Æ÷¸¦ ÀÌ¿ëÇÑ ¼¼Æ÷Ä¡·áÀÇ ´ëºÎºÐÀÌ À̵é MSC ¼¼Æ÷°¡ È°¿ëµÇ°í ÀÖÀ¸¸ç, ±¹³»ÀÇ °æ¿ì ÀÓ»ó ½ÃÇèÀ» °ÅÃÄ ½ÃÆÇ Çã°¡¸¦ ¹ÞÀº 4Á¾ÀÇ ¼¼Æ÷Ä¡·áÁ¦ ¸ðµÎ°¡ °¢ Á¶Á÷ ƯÀÌÀû MSC Áٱ⼼Æ÷ÀÌ´Ù. Áٱ⼼Æ÷ÀÇ Ä¡·á È¿´ÉÀÌ ´Ù¾çÇÑ ¼¼Æ÷·Î ºÐÈ­ÇÒ ¼ö ÀÖ´Â ´É·Â ÀÌ¿Ü¿¡ ÃÖ±Ù¿¡´Â ÀÌ½ÄµÈ Áٱ⼼Æ÷¿¡¼­ ºÐºñµÈ »çÀÌÅäÄ«ÀÎ (Cytokine)°ú ¼ºÀåÀÎÀÚ (Growth factor)µéÀÇ ÆĶóÅ©¶óÀÎ È¿°ú (Paracrine effect) ¶ÇÇÑ Áß¿äÇÑ À¯È¿Àû Ä¡·á ±âÀü (Mode of action)À¸·Î ¿¬±¸µÇ°í ÀÖÀ¸¸ç, ½ÇÁ¦ À̽ÄÇÑ MSC Áٱ⼼Æ÷´Â ¿°Áõ°ú ÇãÇ÷ µîÀÇ ¼Õ»óÀ¸·Î È°¼ºÈ­µÈ ½Åȣü°è¸¦ µû¶ó ¼Õ»ó ºÎÀ§·Î À̵¿ÇÏ¿© ±¹¼Ò, Àü½ÅÀÇ ¿°Áõ ¹ÝÀÀÀ» Á¶ÀýÇÏ°í ¼Õ»ó ºÎÀ§ Á¶Á÷À» Àç»ýÇÏ´Â ¼ºÀåÀÎÀÚ¸¦ ºÐºñÇÑ´Ù.[4]
Áٱ⼼Æ÷¸¦ ÀÌ¿ëÇÑ Ä¡·á´Â °ñ¼öÀ̽Ä, ÀÚ°¡¸é¿ªÁúȯ, ô¼ö¼Õ»ó, ½ÉÇ÷°ü°è Áúȯ µî ÀÓ»ó¿¡¼­ È°¹ßÇÏ°Ô ¿¬±¸µÇ°í ÀÖÁö¸¸[5], °ú¹Î¼º ¹æ±¤, ÀúÈ°µ¿¼º ¹æ±¤ µîÀÇ ¹æ±¤ Áúȯ¿¡¼­ Áٱ⼼Æ÷¿¡ ´ëÇÑ ¿¬±¸´Â ½ÇÁ¦ ÀÓ»ó ȯÀÚº¸´Ù´Â ´Ù¾çÇÑ ÀüÀÓ»ó µ¿¹° ¸ðµ¨¿¡ ±â¹ÝÇÏ°í ÀÖ´Ù.[6] ¹æ±¤ÁúȯÀº ¸¸¼ºÀûÀÌ°í ÅðÇ༺ÀÌ¸ç ½Å°æÇÐÀûÀÎ ¿øÀÎÀÌ ÀÛ¿ëÇÏ´Â ¸¸Å­ Áٱ⼼Æ÷ Ä¡·á ¿¬±¸¿¡ ÀûÇÕÇÑ ÁúȯÀÌ´Ù. º» ±â°í¹®Àº ¹æ±¤Áúȯ¿¡¼­ Áٱ⼼Æ÷ Ä¡·á¿¡ ´ëÇØ Àü¹ÝÀûÀ¸·Î »ìÆ캸°íÀÚ ÇÑ´Ù.

¿ä½Ç±Ý

¿ä½Ç±Ý (Urinary incontinence; UI)Àº ¹«ÀǽÄÀûÀ¸·Î ¿ä´©ÃâÀÌ ÀϾ´Â Áõ»óÀ¸·Î ¿ä´©ÃâÀÌ ¹ß»ýÇϴ»óȲ¿¡ µû¶ó ±× Á¾·ù°¡ ´Ù¾çÇѵ¥, °¡Àå ÈçÇÑ °ÍÀº ±âħ, Àçä±â, ¿îµ¿ µî º¹¾Ð »ó½ÂÀ¸·Î ¹ß»ýÇÏ´Â º¹¾Ð¼º ¿ä½Ç±Ý°ú ¿äÀý¹Ú°ú ¿¬°üµÈ Àý¹Ú¼º ¿ä½Ç±Ý, µÎ °¡Áö°¡ È¥ÀçµÈ È¥ÇÕ¼º ¿ä½Ç±ÝÀÌ´Ù. º¹¾Ð¼º ¿ä½Ç±ÝÀº ¿©¼º¿¡¼­ ÈçÇϸç À¯º´·üÀº ³ªÀÌ¿Í ¿¬°üÀÌ ÀÖ°í 29¿¡¼­ 75%·Î ÃßÁ¤µÈ´Ù.[7]
1998³â Lin µîÀÌ ¾ÏÄÆ ÁãÀÇ ÁúºÐ¸¸À» ÀÌ¿ëÇÑ Ã¹ µ¿¹° ¿ä½Ç±Ý ¸ðµ¨À» ¸¸µé¾ú°í ÀÌÈÄ ½Å°æ ¼Õ»ó, ¿äµµÀÇ Á÷Á¢ ¼Õ»ó, °ñ¹Ý ÀÎ´ë ¼Õ»ó µî ´Ù¾çÇÑ ¹æ¹ýÀÌ °³¹ßµÇ¾ú´Ù. Å©°Ô À½ºÎ½Å°æ ¼Õ»ó, ¿äµµ¸¦ ÁöÁöÇÏ´Â ÇغÎÇÐÀû ±¸Á¶¹° (¿¹: Àδë) µîÀ» ¼Õ»ó½ÃÅ°°Å³ª ¿äµµ¸¦ Á÷Á¢ ¼Õ»ó½ÃÅ°°Å³ª ´Ù¾çÇÑ ±âÀüÀ» È¥ÇÕÇÑ ¹æ¹ýÀÌ »ç¿ëµÈ´Ù.[8] ÀüÀÓ»ó µ¿¹°¸ðµ¨¿¡¼­ ÀÚ°¡À¯·¡ °ñ°Ý±Ù Àü±¸¼¼Æ÷ ÁÖÀÔ ½Ã Áٱ⼼Æ÷°¡ ±ÙÀ° ¼¼Æ÷ °è¿­·Î ºÐÈ­Çϸ鼭 ¿äµµ °ý¾à±ÙÀÇ ±â´ÉÀÌ Çâ»óµÇ°Å³ª ¼Õ»óÀ» ȸº¹½ÃÅ°´Â ¹°ÁúÀ» ÃËÁøÇÏ´Â ÆĶóÅ©¶óÀÎ È¿°ú·Î ¿ä½Ç±Ý È£Àü¿¡ µµ¿òÀÌ µÇ´Â °ÍÀ¸·Î È®ÀεǾú´Ù. Áٱ⼼Æ÷´Â ±¹¼ÒÁÖÀÔÀÌ Á¤¸Æ ÁÖÀÔº¸´Ù´Â ±× È¿°ú°¡ ´õ ÁÁ¾Ò´Ù.[9]
ÀÓ»ó½ÃÇèÀ¸·Î´Â 2008³â Carr µîÀÌ ÃÖÃÊ·Î º¹¾Ð¼º ¿ä½Ç±ÝÀÌ ÀÖ´Â 8¸íÀÇ ¿©¼º ȯÀÚ¿¡¼­ ¿äµµ°ý¾à±Ù ³» ÀÚ°¡ ±ÙÀ°¼¼Æ÷ À¯·¡ Áٱ⼼Æ÷¸¦ ÁÖÀÔ ÈÄ, 5¸í ȯÀÚ¿¡¼­ Áõ»óÀÇ È£Àü, 1¸íÀÇ È¯ÀÚ´Â ¿ÏÀüÈ÷ ¿ä½Ç±Ý Áõ»óÀÌ ¼Ò½ÇµÊÀ» È®ÀÎÇÏ¿´À¸¸ç[10], ÀÌÈÄ 38¸íÀÇ È¯ÀÚ¸¦ ´ë»óÀ¸·Î ½ÃÇèÀ» È®ÀåÇÏ¿© ¾à 90% ȯÀÚ¿¡¼­ ù Áٱ⼼Æ÷ ÁÖÀÔ 3°³¿ù ÈÄ Ãß°¡·Î Áٱ⼼Æ÷¸¦ ÁÖÀÔÇÑ °æ¿ì 50% ÀÌ»ó ¿ä½Ç±ÝÀÌ È£ÀüµÊÀ» È®ÀÎÇÏ¿´´Ù.[11] 2014³â Gotoh µîÀº ±ÙÄ¡Àû Àü¸³¼± ÀýÁ¦¼ú, Ȧ¹Å ·¹ÀÌÀú¸¦ ÀÌ¿ëÇÑ Àü¸³¼± ¼ö¼ú ÈÄ ¿ä½Ç±ÝÀÌ ¹ß»ýÇÑ ³²¼º ȯÀÚ 11¸íÀÇ ¿äµµ °ý¾à±Ù¿¡ ÀÚ°¡ Áö¹æÀ¯·¡ Áٱ⼼Æ÷¸¦ ÁÖÀÔ ÈÄ, 1³â ÃßÀû°üÂû¿¡¼­ 59.8%¿¡¼­ ¿ä½Ç±Ý ¾çÀÌ °¨¼ÒÇÔÀ» È®ÀÎÇÏ¿´´Ù.[12]

°ú¹Î¼º ¹æ±¤

°ú¹Î¼º ¹æ±¤ (Overactive bladder) Àº Àý¹Ú´¢°¡ ÀÖ°í ºó´¢, ¾ß°£´¢, Àý¹Ú¼º ¿ä½Ç±ÝÀÌ ÈçÇÏ°Ô µ¿¹ÝµÇ´Â ¸¸¼º ÁúȯÀÌ´Ù. À¯º´·üÀº ¾à 20%·Î °í·ÉÀϼö·Ï ³ôÀ¸¸ç Çൿġ·áºÎÅÍ ¾à¹°Ä¡·á, ¼ö¼úÀû Ä¡·á°¡ Àִµ¥ °¡Àå ÈçÇÏ°Ô »ç¿ëµÇ´Â ¾à¹°Ä¡·áÀÇ °æ¿ì ±× È¿°ú°¡ ºÎÁ·Çϰųª È¿°ú°¡ ÀÖ´õ¶óµµ Áö¼ÓÀûÀ¸·Î ¾à¹° º¹¿ëÀÌ ÇÊ¿äÇϰųª ÀÔ¸¶¸§°ú ¾È±¸ °ÇÁ¶°¨, º¯ºñµîÀÇ ¾àÁ¦ ºÎÀÛ¿ëÀ¸·Î ÀÎÇØ º¹¿ë Áö¼Ó·üÀÌ ³·´Ù.[14] °ú¹Î¼º ¹æ±¤ÀÇ ¿øÀÎÀº ´Ù¾çÇѵ¥, ÀϺΠȯÀÚ±º¿¡¼­ ¹æ±¤ Ãⱸ Æó»ö(Bladder outlet obstruction; BOO)À» µ¿¹ÝÇÏ´Â °æ¿ì°¡ ÀÖ´Ù. [14]
µ¿¹°¿¡¼­ °ú¹Î¼º ¹æ±¤À» À¯¹ßÇÏ´Â ¹æ¹ý¿¡´Â ¸¸¼º ÇãÇ÷ (Ç÷°ü °áÂû ȤÀº °íÁöÇ÷Áõ), ô¼ö ¼Õ»ó, ¹æ±¤ÃⱸÆó»ö, Ãʱ⠴索 µîÀÌ Àִµ¥ ¹æ±¤ Ãⱸ Æó»ö ¸ðµ¨À» ÀÌ¿ëÇÑ ¿¬±¸°¡ Á¦ÀÏ ¸¹´Ù.(6) Woo µîÀº ¸¶¿ì½º¿¡¼­ ¹æ±¤ ÃⱸÆó»ö À¯¹ß 3ÀÏ ÈÄ Àΰ£ Á¦´ëÇ÷ °ñ¼ö À¯·¡ Áٱ⼼Æ÷¸¦ Á¤¸Æ ÁÖ»çÇÏ°í 4ÁÖ µÚ Ä¡·á È¿´ÉÀ» Æò°¡ÇÑ °á°ú, ¹æ±¤ Ãⱸ Æó»ö¸ðµ¨Àº ´ëÁ¶±º¿¡ ºñÇØ ¹æ±¤±ÙÀ°ÀÇ ºñ´ë, Äݶó°Õ ÃàÀûµÇ¾î ÀÖ¾ú°í Áٱ⼼Æ÷ ÁÖÀÔ±ºÀº ´ëÁ¶±º°ú ºñ½ÁÇÑ Á¤µµ·Î ÆòÈ°±Ù ºñ´ë¿Í ¼¶À¯È­°¡ ´ú Çß´Ù. ÁÖÀÔÇÑ Áٱ⼼Æ÷´Â ¹æ±¤¿¡¼­¸¸ ¹ß°ßµÇ°í ÇǺÎ, Æó, ½ÅÀå¿¡¼­´Â °üÂûµÇÁö ¾Ê¾Ò´Ù.[15]
º» ¿¬±¸ÆÀÀº 6ÁÖ·É ¾ÏÄÆ ¹é¼­¿¡¼­ ¹æ±¤ÃⱸÆó»öÀ» À¯¹ß, 4ÁÖ µÚ GFP Çü±¤´Ü¹éÁú·Î Ç¥½ÄÇÑ Áö¹æ À¯·¡ Àΰ£ Áß°£¹è¿±Áٱ⼼Æ÷¸¦ ¹æ±¤¿¡ ÇÑ Â÷·Ê ÁÖÀÔÇϰųª Á¤¸Æ ÁÖ»ç·Î ÇöÀç ¾à¹°Ä¡·á·Î »ç¿ëµÇ´Â Ç×Äݸ°Á¦Á¦ÀÎ solifenacinÀ» ¸ÅÀÏ 2ÁÖ°£ ÁÖÀÔÇÏ¿´°í 2ÁÖ, 4ÁÖ µÚ ¹æ±¤ ±â´É°ú Á¶Á÷À» Æò°¡ÇÏ¿´´Ù. ºÐÀÚÇÐÀû ±âÀüÀ» °üÂûÇÑ °á°ú, Áٱ⼼Æ÷ ÁÖÀÔ±º¿¡¼­ ¹æ±¤ ½Å°æ¼¼Æ÷°¡ 10.34¹è Àç»ýµÅ ½Å°æü°è ¼Õ»óÀ» ȸº¹½ÃÄ×À¸¸ç, ¹è´¢±Ù ºñ´ë¸¦ ¿ÏÈ­½ÃÄÑ °ú¹Î¼º ¹æ±¤ Áõ»óÀ» È¿°úÀûÀ¸·Î È£Àü½ÃÄ×´Ù. Áٱ⼼Æ÷ ÁÖÀÔ±ºÀº solifenacin ÁÖÀÔ±ºº¸´Ù ´õ ¹æ±¤ ±â´ÉÀÌ È£ÀüµÇ¾úÀ¸³ª Áٱ⼼Æ÷ »ýÂøÀº È®ÀεÇÁö ¾Ê¾Ò´Ù. À¯È¿Àû Ä¡·á ±âÀüÀ» ºÐ¼®ÇÑ °á°ú, Áٱ⼼Æ÷°¡ Á÷Á¢ ¹æ±¤ ¼¼Æ÷·Î ºÐÈ­ÇÏÁö ¾Ê°í, ¹æ±¤ ÁÖº¯ÀÇ ´Ù¸¥ ¼¼Æ÷µé¿¡ ¿µÇâÀ» ¹ÌÄ¡´Â ÆĶóÅ©¶óÀÎ È¿°ú·Î Áٱ⼼Æ÷¼º (stemness)°ú Áٱ⼼Æ÷ »ýÂø/À̵¿ (engraftment/mobilization) °ü·Ã À¯ÀüÀÚµéÀÇ ¹ßÇöÀÌ À¯ÀÇÀûÀ¸·Î Áõ°¡ÇÏ¿´À¸¸ç, ÀÌ·Î ÀÎÇÏ¿© Áٱ⼼Æ÷¼º (SOX2¿Í OCT4) ÀÎÀÚ¸¦ ¹ßÇöÇÏ´Â ³»Àç»ý Áٱ⼼Æ÷ È°¼ºÈ­¿Í ¼Õ»óµÈ ¹æ±¤ Á¶Á÷ ³»·Î À̵¿°ú »ýÂøÀÌ ÁÖ¿ä ±âÀüÀÓÀ» È®ÀÎÇÏ¿´´Ù.[16]
¶ÇÇÑ Lee µîÀº ¹é¼­ BOO ¸ðµ¨¿¡¼­ Àΰ£ Áß°£¹è¿±À¯·¡ Áٱ⼼Æ÷°¡ Äݶó°Õ ÃàÀûÀ» ¾ïÁ¦ÇÒ ¼ö ÀÖ´ÂÁö »ìÆ캸¾Ò´Âµ¥ Áٱ⼼Æ÷ ÁÖÀÔ±º¿¡¼­ TGF-¥â ¹ßÇöÀÌ ÁÙ¾îµå´Â °ÍÀ» È®ÀÎÇÏ¿´À¸¸ç, Áٱ⼼Æ÷°¡ ¹æ±¤ÀÇ ¼¶À¯È­¸¦ ¾ïÁ¦ÇÏ¿© ¹æ±¤ ±â´ÉÀ» ȸº¹½ÃÄ×´Ù°í °á·Ð Áö¾ú´Ù[17]. ¹é¼­¿Í ¸¶¿ì½º¸¦ »ç¿ëÇÑ BOO ¸ðµ¨¿¡¼­ Áٱ⼼Æ÷¸¦ Á÷Á¢ ¹æ±¤¿¡ ÁÖÀÔÇϰųª Á¤ÁÖ·Î ÁÖÀÔÇÑ ¿¬±¸¿¡¼­ Ç×»ó °ú¹Î¼º ¹æ±¤ÀÌ À¯¹ßµÇ´Â °ÍÀº ¾Æ´Ï´Ù. Nishijima µîÀº GFP Çü±¤ ´Ü¹éÁúÀ» Ç¥½ÄÇÑ °ñ¼ö À¯·¡ Áٱ⼼Æ÷¸¦ ¹æ±¤¿¡ Á÷Á¢ ÁÖÀÔ, 4ÁÖ ÈÄ ´ëÁ¶±º°ú ¹æ±¤ÀÇ ¼öÃà·ÂÀ» ºñ±³ÇÏ¿´°í Áٱ⼼Æ÷ ÁÖÀÔ±º¿¡¼­ ¼öÃà·ÂÀÌ °³¼±µÇ°í Áٱ⼼Æ÷°¡ ÆòÈ°±Ù°ú À¯»çÇÑ ¼¼Æ÷·Î ºÐÈ­ÇßÀ½À» È®ÀÎÇß´Ù.[18] BOO µ¿¹° ¸ðµ¨¿¡¼­ Áٱ⼼Æ÷Ä¡·á È¿°ú°¡ È®ÀεǾúÁö¸¸ Æó»öÀÇ Ãʱ⠴ܰ迡 Áٱ⼼Æ÷¸¦ ÁÖÀÔÇÏ¿© Ä¡·áÈ¿°ú¸¦ È®ÀÎÇßÀ½À» °¨¾ÈÇÒ ¶§ ¹æ±¤ Ãⱸ Æó»ö¿¡¼­ Áٱ⼼Æ÷Ä¡·á¸¦ ÀÓ»ó¿¡ Àû¿ëÇϱâ À§Çؼ­´Â ¾ðÁ¦ Ä¡·á¸¦ ÇÒÁö, ÁÖÀÔÇÑ Áٱ⼼Æ÷°¡ ÀÌ¹Ì º¯¼ºµÈ ¹æ±¤À» ȸº¹½Ãų ¼ö ÀÖ´ÂÁö °í·ÁÇØ¾ß ÇÑ´Ù.

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ÀúÈ°µ¿¼º ¹æ±¤ (Detrusor underactivity)Àº ¹æ±¤ÀÇ ¼öÃà·Â °¨¼Ò·Î ¹æ±¤À» ºñ¿ö³»´Â µ¥ ½Ã°£ÀÌ ¿À·¡ °É¸®°Å³ª Á¤»ó ½Ã°£ ¾È¿¡ ¹æ±¤À» ¿ÏÀüÈ÷ ºñ¿ì´Â °ÍÀ» ÇÏÁö ¸øÇÏ´Â °ÍÀ¸·Î[19] ³ëÈ­, ½Å°æÇÐÀû °á¼Õ, ´ç´¢, Áö¼ÓÀûÀÎ ¹æ±¤ Ãⱸ Æó»ö µîÀÌ À§ÇèÀÎÀÚÀÌ´Ù. À¯º´·üÀº 50¼¼ ¹Ì¸¸ÀÇ ÀþÀº ³²¼º¿¡¼­ 9-28%, 70¼¼ ÀÌ»óÀÇ ³²¼º¿¡¼­ ¾à 48%, ¿©¼º¿¡¼­ 12-45%·Î ÃßÁ¤µÈ´Ù.[20] Á¤È®ÇÑ º´¸®ÇÐÀû ±âÀüÀÌ ¾Ë·ÁÁ® ÀÖÁö¾ÊÁö¸¸. ±¸½É¼º ȤÀº ¿ø½É¼º ½Å°æ Á¶Àý¿¡ º¯È­°¡ »ý±ä ½Å°æÇÐÀû ¿øÀΠȤÀº ¹æ±¤ ÆòÈ°±ÙÀÇ º¯¼º, ÀÌ¿Â ÀúÀå/±³È¯ Àå¾ÖÀÇ ±Ù¿ø¼º ±âÀü (Myogenic mechanism)ÀÌ Á¦½ÃµÈ´Ù.[21] ¹æ±¤ Ãⱸ ÀúÇ×À» °¨¼Ò ½ÃÅ°°Å³ª ¹æ±¤ ¼öÃà·ÂÀ» Áõ´ëÇÏ´Â ¾à¹°À» Åõ¾àÇϰųª À¯Ä¡ µµ´¢, ¹æ±¤ ÀýÁ¦ ¹× ¿ä·Î Àüȯ µîÀÌ ½ÃµµµÇ³ª ¿ÏÄ¡ÇÏ´Â Ä¡·á¹æ¹ýÀº ¾ø´Ù. ÀúÈ°µ¿¼º ¹æ±¤ ¸ðµ¨Àº streptozotocin ÁÖÀÔÀ» ÅëÇÑ ´ç´¢ ¸ðµ¨, °í·ÉÀÇ ¼³Ä¡·ù¸¦ »ç¿ëÇÑ ³ëÈ­¸ðµ¨, ¹æ±¤ Ãⱸ Æó»ö ¸ðµ¨, °ñ¹Ý ½Å°æÀÇ ³Ãµ¿ ȤÀº ¼Õ»ó¸ðµ¨, Á×»ó°æÈ­ÁõÀ¸·Î ÀÎÇÑ ÇãÇ÷ ¸ðµ¨ µîÀÌ ÀÖ´Ù.[22]
Zhang µîÀº 8ÁÖ·É ¾ÏÄÆ ¹é¼­¿¡¼­ °íÁö¹æ ½ÄÀÌ¿Í streptozotocin¿¡ ÀÇÇØ À¯µµµÈ Á¦ 2Çü ´ç´¢ ¸ðµ¨¿¡ Áö¹æ Á¶Á÷ À¯·¡ Áٱ⼼Æ÷¸¦ ²¿¸® Á¤¸Æ ÁÖ»çÇÏ°í 4ÁÖ µÚ Ä¡·á È¿´ÉÀ» Æò°¡ÇÑ °á°ú, ´ç´¢ ¸ðµ¨Àº ´ëÁ¶±º¿¡ ºñÇØ Áõ°¡µÈ ¹è´¢°£°Ý°ú ¹æ±¤¾Ð·Â, ¼¼Æ÷»ç¸êÀ» º¸¿´°í Áٱ⼼Æ÷ ÁÖÀÔ±ºÀº ´ëÁ¶±º°ú ºñ½ÁÇÑ Á¤µµ·Î ¹è´¢±â´ÉÀÌ È¸º¹µÇ¾ú´Ù. Áö¹æ Á¶Á÷ À¯·¡ Áٱ⼼Æ÷ÀÇ À̽ÄÀº ´ç´¢ ¸ðµ¨ÀÇ ¹è´¢Àå¾Ö ±â´ÉÀ» ¿ÏÈ­½ÃÅ°°í ¼¼Æ÷»ç¸ê ¾ïÁ¦ ¹× Ç÷°ü ¿ÏÀü¼ºÀÇ ÃËÁøÀº Áٱ⼼Æ÷ Ä¡·á ÈÄ °¡Àå Áß¿äÇÑ ±â´ÉÀû º¯È­ÀÏ ¼ö ÀÖ´Ù.[23]
¶ÇÇÑ Jin µîÀº 4ÁÖ·É ¾ÏÄÆ ¹é¼­¿¡ streptozotocinÀ» º¹°­ ³» ÁÖ»çÇÏ¿© ´ç´¢ ¸ðµ¨À» ¸¸µé¾î 4ÁÖ ÈÄ Àú¿¡³ÊÁö Ãæ°ÝÆÄ Ä¡·á¸¦ ½ÃÇàÇÏ¿´´Ù. Àú¿¡³ÊÁö Ãæ°ÝÆÄ Ä¡·á´Â ´ç´¢º´À¸·Î ÀÎÇØ ¼Õ»óµÈ ¹æ±¤±â´ÉÀ» ȸº¹ÇÏ°í, Ç÷°ü ½Å»ý ¹× ÆòÈ°±Ù Àç»ýÀ» Çâ»ó½ÃŲ´Ù. º» ¿¬±¸¿¡¼­ Á¦½ÃÇÑ °á°ú´Â Àú¿¡³ÊÁö Ãæ°ÝÆÄ¿¡ ÀÇÇØ À¯¹ßµÈ Àç»ý °úÁ¤¿¡¼­ ³»Àμº Áٱ⼼Æ÷ÀÇ È°¼ºÈ­°¡ Áß¿äÇÑ ¿ªÇÒÀ» ÇÑ´Ù´Â °ÍÀÌ°í, ÀÌ·¯ÇÑ È¿°ú´Â ³»Àμº Áٱ⼼Æ÷¿¡¼­ Ç÷°ü ³»ÇÇ ¼ºÀåÀÎÀÚ¸¦ ´õ ¸¹ÀÌ ºÐºñÇÏ¸ç ¸Å°³ ¸é¿ª ÀÛ¿ëÀ» ³ªÅ¸³»¸ç ¹æ±¤ ±â´É°ú Ç÷°ü ½Å»ýÀÌ °³¼±µÊÀ» È®ÀÎÇÏ¿´´Ù.[24]

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º» ¿¬±¸ÆÀÀº °£Áú¼º¹æ±¤¿°ÀÇ ÁÖ¿ä º´ÀÎ Áß ÇϳªÀÎ ¹æ±¤ ³»º®ÀÇ Åõ°ú¼º ¼Õ»óÀ» ±¸ÇöÇϱâ À§ÇØ HCL ÁÖÀÔ À¯µµ °£Áú¼º¹æ±¤¿° Áúȯ ¸ðµ¨ (HCL-IC)-À» È°¿ëÇÏ¿© Àΰ£ Á¦´ëÇ÷ Áٱ⼼Æ÷ (UCB-MSC)¸¦ ¹æ±¤ ³»¿¡ ´Üȸ Åõ¿©ÇÏ°í 1ÁÖ ÀÏ µÚ ¹æ±¤ ±â´É°ú Á¶Á÷ÇÐÀû °Ë»ç ¹× ¹æ±¤ Á¶Á÷ÀÇ À¯ÀüÀÚ ¹ßÇöÀ» Æò°¡ÇÏ¿´´Ù. HCL À¯µµ °£Áú¼º¹æ±¤¿° Ÿ°Ù Àΰ£ Á¦´ëÇ÷ Áٱ⼼Æ÷ Ä¡·á¹ýÀÇ ±âÀüÀ» ±Ô¸íÇϱâ À§ÇÏ¿©, ¿ä·Î»óÇǼ¼Æ÷ Àç»ý¿¡ °ü¿©ÇÏ´Â sonic hedgehog (SHH)¿Í WNT À¯ÀüÀÚµé°ú °ü·Ã growth factors ¼ºÀåÀÎÀÚÀÇ ¹ßÇöÀ» Æò°¡ÇÑ °á°ú, SHH-WNT-EGF, IGF, FGF ½ÅÈ£Àü´Þü°èµéÀÌ HCL-IC ¹æ±¤ Á¶Á÷¿¡¼­ °¨¼ÒµÇ¾î ÀÖÀ¸¸ç, Áٱ⼼Æ÷¸¦ À̽ÄÇÑ ¹æ±¤¿¡¼­ ¹ßÇöÀÌ Áõ°¡µÊÀ» È®ÀÎÇÏ¿´´Ù. µû¶ó¼­ WNT signalingÀÇ È°¼ºÈ­¿¡ ÀÇÇÑ ¿ä·Î»óÇǼ¼Æ÷ Àç»ýÀÌ °£Áú¼º¹æ±¤¿° Ÿ°Ù Áٱ⼼Æ÷ Ä¡·á¹ýÀÇ ÁÖ¿ä À¯È¿Àû Ä¡·á ±âÀüÀÓÀ» È®ÀÎÇÏ¿´´Ù.[26]
ÇÏÁö¸¸ UCB-MSC´Â ¹æ±¤ ³» Áٱ⼼Æ÷ÀÇ »ýÂø·ü°ú Á÷Á¢ºÐÈ­°¡ ÀúÁ¶ÇÏ¿´´Ù. À̸¦ ±Øº¹Çϱâ À§ÇØ Àΰ£ ¹è¾ÆÁٱ⼼Æ÷ À¯·¡ ´ÙºÐÈ­¼º Áٱ⼼Æ÷ (hESC-MSC; MMSC)¸¦ HCL-IC µ¿¹° ¸ðµ¨ÀÇ ¹æ±¤¿¡ ´Üȸ Åõ¿©ÇÏ°í 1ÁÖÀÏ µÚ ¹æ±¤±â´ÉÀ» Æò°¡ÇÏ¿´´Ù. MMSC´Â °ñ¼ö À¯·¡ Áٱ⼼Æ÷¿¡ ºñÇØ Ä¡·á È¿´ÉÀÌ 10¹è ÀÌ»ó ³ô¾Ò°í Ä¡·á È¿°ú°¡ 2ÁÖ, 4ÁÖ±îÁö Àå±â°£ Áö¼ÓµÇ¾ú´Ù. ÀÌÀü ¿¬±¸¿¡¼­ È®ÀÎÇÑ WNT signalingÀÌ È°¼ºÈ­ µÇ¾ú°í Áٱ⼼Æ÷°¡ Á÷Á¢ ¿ä·Î»óÇǼ¼Æ÷³ª Ç÷°ü³»ÇǼ¼Æ÷ ÁÖº¯ÀÇ ÁÖÇÇ ¼¼Æ÷ (Pericyte)·Î ºÐÈ­, ¹æ±¤ ³» »ýÂøÀÌ 6°³¿ù ÀÌ»ó °üÂûµÇ¾ú´Ù. Áï, MMSC´Â ¼Õ»óµÈ ¿ä·Î»óÇǼ¼Æ÷¸¦ Àç»ýÇÏ°í ¼ºÀåÀÎÀÚ¸¦ ºÐºñÇÏ´Â ±âÁú ¼¼Æ÷¿Í ÁÖÇÇ ¼¼Æ÷·Î ºÐÈ­ÇÏ¿© Ç÷°ü Àç»ý ÃËÁøÀ» ÅëÇÑ Ä¡·á È¿´ÉÀ» º¸¿´´Ù. ¶ÇÇÑ MMSC ÁÖÀÔ 12°³¿ù±îÁö ¿µ»óÃßÀû °Ë»ç ¹× ºÎ°ËÀ» ÅëÇØ Áٱ⼼Æ÷°¡ ¹æ±¤ ¿Ü ´Ù¸¥ Àå±â·Î À̵¿Çϰųª Á¾¾çÀ» À¯¹ßÇÏÁö ¾ÊÀ½À» È®ÀÎÇÏ¿´´Ù. [27]
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    University of Louisville, ¹Ú»çÈÄ ¿¬±¸¿ø

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