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Changes in CGRP-immunoreactive Nerver Fibers during Expansion of Midpalatal Suture of the Rat

Korean Journal of Orthodontics 1999³â 29±Ç 1È£ p.73 ~ 81
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±èº¸°æ/Bo Kyung KIm °æÈñ¹®/±Ç¿À¿ø/¼ºÀçÇö/¹Ú±¹ÇÊ/Hee Moon Kyung/Oh Won Kwon/Jae Hyun Sung/Kuk Pil Park

Abstract

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ÀÏÀ¸Å°¸é¼­ µ¿ÅëÀ» À¯¹ßÇÏ°Ô µÇ°í ±¸°³ºÀÇպΰ¡ È®´ëµÇ°í ±×°ÍÀÌ À¯ÁöµÇ´Â µ¿¾È¿¡ ±â°èÀû
Àڱؿ¡ ÀÇÇÑ ±¸°³ºÎ½Å°æ¼¶À¯ÀÇ ¹ÝÀÀ¼º¿¡ º¯È­¸¦ ÀÏÀ¸Å³ °ÍÀ¸·Î »ý°¢µÈ´Ù.
º» ¿¬±¸¿¡¼­´Â ¹é¼­ Á¤Áß±¸°³ºÀÇÕºÎÀÇ CGRP ¸é¿ª¹ÝÀÀ ½Å°æ¼¶À¯ÀÇ ±³Á¤·Â Àû¿ë½Ã°£¿¡ µû
¸¥ ÇüÅÂÇÐÀûÀÎ ¹ÝÀÀ¼º, ¹Ðµµ, ºÐÆ÷º¯È­ µîÀ» °üÂûÇÏ°í ±×¿Í ¿¬°üµÈ CGRPÀÇ ±â´ÉÀ» ¾Ë¾Æº¸
°íÀÚ 250gm³»¿ÜÀÇ Sprague-Dawley ¿õ¼º¹é¼­ »ó¾Ç ÀüÄ¡¿¡ 200gmÀÇ Ä¡¾ÆÀÌ°³·ÂÀÌ °¡ÇØÁö
µµ·Ï È°¼ºÈ­½ÃŲ helical springÀ» »ðÀÔÇÏ¿© Á¤»ó´ëÁ¶±º°ú ÀåÄ¡ ÀåÂø ÈÄ °æ°ú½Ã°£¿¡ µû¶ó 1
ÀÏ, 4ÀÏ, 7ÀÏ, 14ÀÏ °æ°ú±ºÀ¸·Î ³ª´©¾î Á¤Áß±¸°³ºÀÇպθ¦ È®´ëÈÄ Èñ»ý½ÃÄÑ ¸é¿ªÁ¶Á÷È­ÇйýÀ¸
·Î ¿°»öÇÏ¿© °üÂûÇÏ¿´´Ù.
´ëÁ¶±º¿¡¼­ Á¤Áß±¸°³ ºÀÇպΠ°áÇÕÁ¶Á÷ÀÇ CGRP ¸é¿ª¾ç¼º ½Å°æ¼¶À¯´Â °ÅÀÇ °üÂûµÇÁö ¾Ê¾Ò´Ù.
1ÀÏ ´ëÁ¶±º¿¡¼­´Â ´ëÁ¶±º¿¡ ºñÇØ CGRP ¸é¿ª¹ÝÀÀ ½Å°æ¼¶À¯°¡ ÇöÀúÇÑ Áõ°¡¸¦ º¸¿´À¸¸ç ÁÖ·Î
Ç÷°üÁÖÀ§¿¡ ¿°ÁÖ¾Ë ¸ð¾çÀÇ °¡´Â ½Å°æ¼¶À¯°¡ °üÂûµÇ¾ú´Ù.
4Àϱº¿¡¼­´Â CGRP ¸é¿ª¹ÝÀÀ ½Å°æ¼¶À¯°¡ ´ëÁ¶±º¿¡ ºñÇؼ­´Â ÇöÀúÇÑ Áõ°¡¸¦ º¸¿´À¸³ª 1ÀÏ
±º¿¡ ºñÇؼ­´Â Å©°Ô Áõ°¡ÇÏÁö ¾Ê¾ÒÀ¸¸ç Ç÷°üÀÇ Å©±â°¡ ÈξÀ È®ÀåµÇ¾î °üÂûµÇ¾ú´Ù.
7Àϱº¿¡¼­´Â Ư¡ÀûÀ¸·Î Á¶°ñ¾ç¼¼Æ÷°¡ »õ·ÎÀÌ Çü¼ºµÈ °ñº¯¿¬À» µû¶ó ÁÙÁö¾î ¹è¿­µÇ´Â µ¶Æ¯
ÇÑ ¾ç»óÀÌ °üÂûµÇ¾ú°í, ½Å°æ¼¶À¯ÀÇ ¼ö´Â 4Àϱº¿¡ ºñÇÏ¿© °¨¼ÒÇÏ°í Ç÷°üÀÇ Á÷°æµµ °¨¼ÒµÇ¾ú
´Ù.
14Àϱº¿¡¼­´Â CGRP ¸é¿ª¹ÝÀÀ ½Å°æ¼¶À¯°¡ 7Àϱº°ú À¯»çÇÑ ºÐÆ÷¸¦ º¸¿´À¸¸ç È®´ë¿¡ ÀÇÇÑ °ñ
º¯¿¬ÀÇ ºÒ±ÔÄ¢¼ºµµ ´ëü·Î °¨¼ÒµÇ¾ú´Ù.
CGRP ¸é¿ª¹ÝÀÀ ½Å°æ¼¶À¯´Â Á¤Áß±¸°³ºÀÇÕÀÇ È®´ë½Ã Ãʱ⿡ ÀϾ´Â ½Å°æ¿ø¼º ¿°Áõ¹ÝÀÀ¿¡
ÁÖ·Î °ü·ÃµÇ¾î Áõ½ÄµÇ´Â °ÍÀ¸·Î »ý°¢µÈ´Ù.
#ÃÊ·Ï#
Midpalatal suture expansion if often used for patients having narrow maxillary arch,
cleft palate, respiratory handicap with narrow nasal cavity. CGRP has been known as a
modulator of pain transmission in central nervous system and a local effector to
peripheral tissue causing vasodilation, increase of blood flow, modulation of
immunesystem, regulation of macrophagic function and stimulation of bone formation.
To investigate changes of CGRP-immunoreactive nerve fibers in midpalatal suture
during the expansion, immunohistochemical study was performed by using rats.
Experimental rats (10 weeks, 250 gm) were divided into five groups (control, 1, 4, 7, 14
days group (each n=4) and applied orthodontic force (approximately 200gm) to upper
anterior incisors. Frozen sections of midpalatal suture area were immunostained by using
rabbit antisera.
The results were as follows:
The CGRP-immunoreactive nerve fibers were hardly observed in control group.
In 1 day group, the CGRP-immunoreactive nerve fibers were more increased around the
vessels than control group.
In 4 days group, the CGRP-immunoreactive nerve fibers were more increased than
control group, but nor more increased than 1 day group. Vascular diameter was more
enlarged.
In 7 days group, especially, hematoxilin affinity of cells was remarkable and cells were
arranged along the bone margin. The CGRP-immunoreactive nerve fibers were more
reduced than 4 days group and vascular diameter was also reduced.
In 14 days group. the CGRP-immunoreactive nerve fibers were similar to those of 7
days group and the irregularity of bone margin was almost recoverd.
In Conclusion, the CGRP-immunoreactive nerve fibers may be related to intial
neurogenic inflammatory reaction in expanding mid-palatal suture.

Å°¿öµå

Á¤Áß±¸°³ºÀÇÕ; È®´ë; CGRP ¸é¿ª¹ÝÀÀ ½Å°æ¼¶À¯; ¿°Áõ¹ÝÀÀ; midpalatal suture; expansion; CGRP-immunoreative nerve fibers; inflammatory;

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