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¹é¼­ÀÇ ÇϾǰñ Àü¹æ ÀçÀ§Ä¡ ½Ã ÇϾǰúµÎ Á¶Á÷¿¡¼­ÀÇ nitric oxide synthases ¹ßÇö ¾ç»ó

Expression of nitric oxide synthases in the mandibular condyle of anterior repositioned rat mandibles

Korean Journal of Orthodontics 2010³â 40±Ç 4È£ p.239 ~ 249
±èÇö¼÷, ±èÈ£¿µ, Ç㼺¼ö, °­°æÈ­, ±è»óö,
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±èÇö¼÷ ( Kim Hyun-Sook ) - ¿ø±¤´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°ú±³Á¤Çб³½Ç
±èÈ£¿µ ( Kim Ho-Young ) - ¿ø±¤´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°ú±³Á¤Çб³½Ç
Ç㼺¼ö ( Heo Sung-Su ) - ¿ø±¤´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°ú±³Á¤Çб³½Ç
°­°æÈ­ ( Kang Kyung-Hwa ) - ¿ø±¤´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°ú±³Á¤Çб³½Ç
±è»óö ( Kim Sang-Cheol ) - ¿ø±¤´ëÇб³ Ä¡°ú´ëÇÐ Ä¡°ú±³Á¤Çб³½Ç

Abstract

¼ºÀå±â ¾Æµ¿ÀÇ ÇϾǰúµÎ Á¶Á÷¿¡¼­ÀÇ °ñ°³Á¶ °úÁ¤Àº ¿¬°ñ¼¼Æ÷, Á¶°ñ¼¼Æ÷, ÆÄ°ñ¼¼Æ÷°¡ ¿¬°üµÇ¸ç nitric oxide synthase (NOS)°¡ Áß¿äÇÑ ¸Å°³ÀÚÀÇ Çϳª·Î ÀÛ¿ëÇÒ °ÍÀ¸·Î »ý°¢µÇ³ª ±â´É¼º ¾ÇÁ¤Çü¼úÀ» ÀÌ¿ëÇØ ÇϾǰñÀ» Àü¹æÀ¯µµ½ÃÄ×À» ¶§ ÇϾǰúµÎ¿¡¼­ÀÇ °ñ°³Á¶¿Í NOSÀÇ ¹ßÇö¿¡ ´ëÇؼ­´Â ¾ÆÁ÷ ÀÚ¼¼È÷ ¿¬±¸µÇ¾î ÀÖÁö ¾Ê´Ù. º» ¿¬±¸´Â ÇϾǰñÀ» ±â´ÉÀûÀ¸·Î Àü¹æÀ§Ä¡½ÃÄ×À» ¶§ ÇϾǰúµÎ Á¶Á÷ÀÇ Á¶Á÷ÇÐÀû º¯È­¾ç»ó¿¡ ´ëÇØ »ìÆ캸°í NOSÀÇ ¹ßÇö Á¤µµ¸¦ Á¶»çÇÏ¿© »ó°ü°ü°è¸¦ ¾Ë¾Æº¸°íÀÚ ÇÏ¿´´Ù. 35ÀÏ·ÉÀÇ 24¸¶¸®ÀÇ Sprague-Dawley ¹é¼­¸¦ 3±ºÀ¸·Î ³ª´©¾ú°í °¢ ±º¿¡ À־ 5¸¶¸®´Â ½ÇÇ豺À¸·Î, 3¸¶¸®´Â ´ëÁ¶±ºÀ¸·Î ³ª´©¾ú´Ù. ½ÇÇ豺Àº ÇϾǰñ Àü¹æÀ¯µµÀåÄ¡¸¦ 24½Ã°£ ÀåÂøÇÑ ÈÄ 3, 14, 30ÀÏ¿¡ Èñ»ýÇÏ¿´À¸¸ç Á¶Á÷ÀýÆíÀº ½Ã»ó¸é¿¡ ÆòÇàÇÏ°Ô Àý´ÜÇÏ¿´°í NOS2¿Í NOS3ÀÇ Á¶Á÷¸é¿ª¿°»öÀ» ÅëÇØ ´ÙÀ½°ú °°Àº °á°ú¸¦ ¾ò¾ú´Ù. ´ëÁ¶±º °£¿¡´Â Á¶Á÷ÇÐÀûÀÎ º¯È­¿Í NOSÀÇ ¹ßÇö º¯È­°¡ ¶Ñ·ÇÀÌ °üÂûµÇÁö´Â ¾Ê¾ÒÀ¸¸ç ½ÇÇè±â°£¿¡ µû¸¥ Á¶Á÷ÇÐÀû º¯È­´Â ½ÇÇè 14Àϱº¿¡¼­ °¡Àå ¸¹Àº ½Å»ý°ñ Çü¼º°ú Á¶°ñ¼¼Æ÷ È°¼ºÀ» º¸¿´À¸¸ç, ½ÇÇè 30Àϱº¿¡¼­´Â °¨¼ÒÇÏ´Â ¾ç»óÀ¸·Î ³ªÅ¸³µ´Ù. ¶ÇÇÑ ¸ðµç ½ÇÇ豺¿¡¼­ ´ëÁ¶±º¿¡ ºñÇØ NOS2¿Í NOS3ÀÇ ¹ßÇöÀÌ ¸¹ÀÌ ³ªÅ¸³µÀ¸¸ç ½ÇÇè±â°£¿¡ µû¸¥ ºñ±³ ½Ã NOS2¿Í NOS3ÀÇ ¹ßÇöÀº ½ÇÇè 14Àϱº¿¡¼­ °¡Àå ¸¹ÀÌ ³ªÅ¸³µÀ¸¸ç ½ÇÇè 30Àϱº¿¡¼­´Â °¨¼ÒÇÏ´Â ¾ç»óÀ¸·Î ³ªÅ¸³µ´Ù. Àüü ½ÇÇ豺°ú ´ëÁ¶±º¿¡¼­ NOS2ÀÇ ¹ßÇöÀº NOS3ÀÇ ¹ßÇöº¸´Ù ¸¹ÀÌ ³ªÅ¸³µ°í NOS2´Â ½ÇÇ豺 °úµÎÀÇ ºñ´ë¿¬°ñ, ¿¬°ñÇÏ°ñ¿¡¼­ ÁÖ·Î ¹ßÇöµÇ¾ú´Ù. NOS3´Â ½ÇÇ豺 °úµÎÀÇ °ñ¼ö¿Í ¸ð¼¼Ç÷°ü¿¡¼­ ÁÖ·Î ¹ßÇöµÇ¾ú´Ù. µû¶ó¼­ ÇϾǰúµÎ ³»ÀÇ NOS2¿Í NOS3ÀÇ ¹ßÇöÁ¶ÀýÀÌ ÇϾǰúµÎ Á¶Á÷ÀÇ °ñ°³Á¶¿¡ °ü¿©ÇÔÀ» ½Ã»çÇÑ´Ù.

Objective: The aim of this study was to identify the expression of nitric oxide synthases (NOS) in the mandibular condyle during mandible advancement by functional appliance and to correlate it with the histologic changes and bone remodeling.

Methods: Twenty-four female, 35-day-old Sprague-Dawley rats were randomly divided into 3 experimental groups. In all experimental groups, the mandibles of the rats were kept in a continuous forward position with a fixed bite jumping appliance. The rats were sacrificed on the 3rd, 14th, and 30th days of experiment. More than 2 rats in each group were used for staining.

Results: There were no remarkable histologic changes and NOS expression differences in the control group. The most prominent histologic changes occurred in the 14th day experimental group. NOS decreased in the 30th day experimental group. There was increased expression of NOS2 and NOS3 in all experimental groups, comparative to the control group. In all the experimental groups and control group, the expression of NOS2 was greater than that of NOS3.

Conclusions: It is postulated that NOS2 and NOS3 in the mandibular condyle might play an important role in bone remodelling of the mandibular condyle.

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ÇϾǰúµÎ Á¶Á÷; °ñ°³Á¶; ±â´É¼º ¾ÇÁ¤Çü¼ú; Á¶Á÷ÇÐ
Functional orthopedic treatment;Mandibular condyle;Histology;Bone biology

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