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¹é¼­ÀÇ Ä¡¾ÆÀ̵¿ ½Ã ÇÇÁú°ñ õ°øÀÌ Ä¡ÁÖÁ¶Á÷ÀÇ MMP-1, -8, -13 mRNAÀÇ ¹ßÇö¿¡ ¹ÌÄ¡´Â ¿µÇâ

The expression of MMP-1, -8, and -13 mRNA in the periodontal ligament of rats during tooth movement with cortical punching

Korean Journal of Orthodontics 2008³â 38±Ç 3È£ p.187 ~ 201
°ûÃá, ±è¼º½Ä, ¹Ú¼öº´, ¼Õ¿ì¼º, ±è¿ë´ö, ÀüÀº¼÷, ¹Ú¹ÌÈ­,
¼Ò¼Ó »ó¼¼Á¤º¸
°ûÃá ( Gwack Choon ) - ºÎ»ê´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø Ä¡°ú±³Á¤Çб³½Ç
±è¼º½Ä ( Kim Seong-Sik ) - ºÎ»ê´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø Ä¡°ú±³Á¤Çб³½Ç
¹Ú¼öº´ ( Park Soo-Byung ) - ºÎ»ê´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø Ä¡°ú±³Á¤Çб³½Ç
¼Õ¿ì¼º ( Son Woo-Sung ) - ºÎ»ê´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø Ä¡°ú±³Á¤Çб³½Ç
±è¿ë´ö ( Kim Yong-Deok ) - ºÎ»ê´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø ±¸°­¾Ç¾È¸é¿Ü°úÇб³½Ç
ÀüÀº¼÷ ( Jun Eun-Sook ) - ºÎ»ê´ëÇб³º´¿ø ÀÇÇבּ¸¼Ò
¹Ú¹ÌÈ­ ( Park Mi-Hwa ) - ºÎ»ê´ëÇб³º´¿ø ÀÇÇבּ¸¼Ò

Abstract

º» ¿¬±¸´Â ÇÇÁú°ñ õ°øÀ» µ¿¹ÝÇÑ ±³Á¤ÀûÀÎ Ä¡¾ÆÀ̵¿ÀÌ Åë»óÀÇ ±³Á¤ÀûÀÎ Ä¡¾ÆÀ̵¿°ú Á¶Á÷ ÀçÇü¼ºÀÇ Á¤µµ¿¡ Â÷ÀÌ°¡ Á¸ÀçÇÏ´ÂÁö ¾Ë¾Æº¸±â À§ÇÏ¿© ½ÃÇàÇÏ¿´´Ù. ½ÇÇ赿¹°Àº 15ÁÖ·É ±º 300 - 350 gÀÇ ÀÚ¼º ¹é¼­(Sprague-Dawley Rat)¸¦ »ç¿ëÇÏ¿´À¸¸ç ÇÇÁú°ñ õ°øÀ» µ¿¹ÝÇÑ Ä¡¾ÆÀ̵¿ ½ÇÇ豺(TMC group, n = 16)°ú ´Ü¼ø Ä¡¾ÆÀ̵¿ ´ëÁ¶±º(TM group, n = 16)À¸·Î ³ª´©¾ú´Ù. ¸ðµç ½ÇÇ赿¹°¿¡ 20 gm ÀÌÇÏÀÇ ÈûÀ¸·Î ÀüÄ¡ºÎ¸¦ ÀÌ°³½ÃÅ°´Â Ä¡¾Æ À̵¿À» ½ÃÇàÇÏ¿´À¸¸ç, ½ÇÇ豺Àº »ó¾ÇÀüÄ¡ºÎÀÇ Á÷ÈÄ¹æ ±¸°³Ãø¿¡¼­ Ä¡±ÙÀ» ¼Õ»ó½ÃÅ°Áö ¾Êµµ·Ï Á÷°æ 1.0 mmÀÇ microscrew¸¦ »ç¿ëÇÏ¿© ÇÇÁú°ñ õ°øÀ» ÇÏ¿´´Ù. ¸ðµç ½ÇÇ赿¹°Àº 1, 4, 7, 14ÀÏ¿¡ Èñ»ý½ÃÄѼ­ matrix metalloproteinase (MMP)-1, -8, -13 È¿¼ÒÀÇ RT-PCR°ú IÇü ±³¿øÁú(Collagen type I)°ú Tissue inhibitor of metalloproteinase-1 (TIMP-1)ÀÇ ¸é¿ªÁ¶Á÷È­Çп°»ö(immunohistochemistry) À» ½ÃÇàÇÏ¿´´Ù. MMP-1Àº ½ÇÇ豺¿¡¼­ 4ÀÏ°¿¡ °¡Àå È°¹ßÇÑ ¹ßÇöÀ» º¸ÀÌ´Ù°¡ 7ÀÏ°¿Í 14ÀÏ°¿¡ Á¶±Ý¾¿ °¨¼ÒÇÏ´Â °æÇâÀ» º¸ÀÎ ¹Ý¸é¿¡, ´ëÁ¶±º¿¡¼­´Â ½ÇÇè 7ÀÏ°¿¡ °¡Àå ³ôÀº ¹ßÇöÀ» º¸ÀÌ´Ù°¡ 14ÀÏ° µé¾î¼­ °¨¼ÒÇÏ´Â ¾ç»óÀ» º¸¿´´Ù. MMP-8Àº ½ÇÇè 1ÀÏ°ºÎÅÍ ½ÇÇ豺ÀÌ ´ëÁ¶±º¿¡ ºñÇؼ­ ´õ ¸¹Àº ¹ßÇöÀ» º¸¿´À¸¸ç, ƯÈ÷ 4ÀÏ°ÀÇ ½ÇÇ豺¿¡¼­´Â ´ëÁ¶±ºº¸´Ù µÎ ¹è ÀÌ»ó ¹ßÇöµÇ¾ú´Ù. MMP-13Àº ½ÇÇè 1ÀÏ°ÀÇ ½ÇÇ豺¿¡¼­ °¡Àå ³ôÀº ¹ßÇöµµ¸¦ º¸¿´À¸¸ç, ´ëÁ¶±º¿¡¼­´Â ¿ÀÈ÷·Á ¹Ìóġ ´ëÁ¶±º¿¡ ºñÇØ ´õ ³·°Ô ¹ßÇöµÇ¾ú´Ù. IÇü ±³¿øÁúÀÇ ¸é¿ªÁ¶Á÷È­Çп°»ö °á°ú´Â ½ÇÇè 4ÀÏ°ºÎÅÍ ¾Ð¹ÚÃø¿¡¼­´Â ½ÇÇ豺¿¡¼­ ´ëÁ¶±ºº¸´Ù ´õ ¸¹Àº ±³¿øÁúÀÇ ¼Ò½ÇÀ» º¸¿´°í, ÀÎÀåÃø¿¡¼­´Â ´ëÁ¶±ºÀÌ ½ÇÇ豺º¸´Ù ´õ ¸¹Àº ±³¿øÁúÀÇ ¿°»ö ¼Ò°ßÀ» º¸¿´´Ù. TIMP-1Àº ½ÇÇè 4ÀÏ°¿¡´Â ¾Ð¹ÚÃø¿¡¼­ ´ëÁ¶±ºÀÌ ½ÇÇ豺º¸´Ù Ä¡ÁÖÀδë¿Í Ä¡Á¶°ñÀÇ °ñ¼¼Æ÷¿¡¼­ Á» ´õ ±ÕÀÏÇÑ ¿°»ö ¼Ò°ßÀ» º¸¿´´Ù. ÀÌ»óÀÇ ½ÇÇè °á°ú¿¡¼­ ÇÇÁú°ñ õ°øÀº ¹é¼­ÀÇ ½ÇÇèÀû Ä¡¾ÆÀ̵¿¿¡ ÀÖ¾î Ä¡ÁÖÀδë¿Í Ä¡Á¶°ñ °áÇÕ Á¶Á÷ÀÇ ÀçÇü¼º ¼Óµµ¸¦ Áõ°¡½ÃÅ°´Â °ÍÀ¸·Î ÆǴܵȴÙ. (´ëÄ¡±³Á¤Áö 2008;38(3):187-201)

Objective: The aim of this study was to determine whether cortical punching stimulates the expression of matrix metalloproteinase-1, -8, and -13 in orthodontic tooth movement in rats.

Methods: A total of 32 male sprague-dawley rats at 15 weeks old were divided into two groups of 16 rats each, to form the tooth movement with cortical punching (TMC) group and tooth movement only (TM) group. A total of 20 gm of orthodontic force was applied to rat incisors to cause experimental tooth movement. Cortical punching was performed on the palatal side near the central incisor with a 1.0 mm width microscrew in the TMC group. The duration of tooth movement was 1, 4, 7, and 14 days.

Results: Measurements of the mRNA expression were selected as the means to determine the identification of expression of MMP-1, -8, and -13. In the TMC group, the expression of collagen type I was greater than that of the TM group from day 4 to day 14. Expression of TIMP-1 in the TM group was greater than that of the TMC group in the pressure side of PDL and alveolar bone cell at day 4. In the TMC group, TIMP-1 was expressed at the osteoclast, but not at the tooth surface of the TM group at day 14. Maximum induction of the mRNA of MMP-1 was observed on day 4 in the TMC group, but it was observed on day 7 in the TM group. MMP-8 mRNA of the TMC group was twice greater than that of the TM group at 4 days. In the TMC group, maximum induction of MMP-13 mRNA was observed on day 1.

Conclusions: These findings suggested that cortical punching can stimulate remodeling of PDL and alveolar bone connective tissues during experimental orthodontic tooth movement in rats. (Korean J Orthod 2008;38(3):187-201)

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Matrixmetalloproteinase;CollagentypeI;Corticalpunching

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