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EVALUAT10N OF ECTOPIC BONE FORMATION EFFECT BY DECALCIFIED DEGREE OF ALLOGRAFTS

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Abstract

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µ¿Á¾ À̽İñ ³»ÀÇ Å»È¸ Á¤µµ¿¡ µû¸¥ ÀÜÁ¸ Ä®½·Ä¡°¡ À̼Ҽº °ñÇü¼º´É¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» ÆÄ
¾ÇÇÏ°íÀÚ Sprague-dowley°è ¹é¼­¿¡¼­ äÃëÇÑ °æ°ñ ¹× ´ëÅð°ñÀÇ °ñ°£ºÎ¸¦ 0.5cm Å©±â·Î Àý
´ÜÇÏ¿© ºÎÂø ¿¬Á¶Á÷Àº Á¦°ÅÇÑ ´ÙÀ½, ÃÊÀ½ÆÄ ¼¼Ã´ÀåÄ¡¸¦ ÀÌ¿ëÇÏ¿© 60¡É 0.6N HCI¿ë¾×À¸·Î 5
ºÐ, 10ºÐ, 15ºÐ, 20ºÐ, 25ºÐ, 30ºÐ, 35ºÐ, 40ºÐ°£ °¢°¢ ó¸®ÇÏ¿© Żȸ µ¿Á¾ À̽İñÀ» ÁغñÇÏ¿´
´Ù À̶§ Żȸ½Ã°£¿¡ µû¸¥ ½ÃÆíÀÇ ¹«°Ô¸¦ ÃøÁ¤ÇÏ¿´°í, °¢ Żȸ¿ë¾×À¸·ÎºÎÅÍ 1cc¸¦ ÃëÇÑ ´ÙÀ½
Sigma»çÀÇ Áø´Ü¿ë Ä®½·Ä¡ ÃøÁ¤kit¸¦ ÀÌ¿ëÇÏ¿© spectophotometer·Î 600nm ÆÄÀåÇÏ¿¡¼­ Ä®½·
Ä¡¸¦ ÃøÁ¤ÇÏ¿´´Ù ±×¸®°í Żȸ Á¤µµ¿¡ µû¸¥ À̽İñÆíÀÇ °ñÇü¼º À¯µµ´ÉÀ» È®ÀÎÇϱâ À§ÇÏ¿© 24
¸¶¸®ÀÇ Sprague-dowley°è ¹é¼­¸¦ Żȸ½Ã°£º°·Î 8±ºÀ¸·Î ³ª´©¾î ¹èºÎ¿¡ 0.5cm Å©±â·Î 4±º
µ¥ÀÇ ÇÇÇϳ¶À» Çü¼ºÇÑÈÄ °¢°¢ÀÇ Ã³¸®µÈ Żȸ À̽İñÆíÀ» À̽ÄÇÏ¿´´Ù. ¸Å½ÄµÈ µ¿Á¾ À̽İñÆí
µéÀ» ¼úÈÄ 1, 2, 3ÁÖ° äÃëÇÏ¿© Åë¹ý¿¡ µû¶ó H&E¿°»ö Ç¥º»À» Á¦ÀÛÇÏ¿© ±¤ÇÐÇö¹Ì°æÀ¸·Î °ü
ÂûÇÏ¿´´Ù. ÀÌ»óÀÇ ½ÇÇè¿¡¼­ ´ÙÀ½°ú °°Àº °á°ú¸¦ ¾ò¾ú´Ù.
1. Żȸ 30ºÐ±îÁöÀÇ ¿ëÃâµÇ´Â Ä®½· ³óµµ º¯È­´Â Æò±Õ 15.91mg/m1·Î, Żȸ 20ºÐ ÀÌÈÄ¿¡ Æò±Õ
99.65%ÀÇ Å»È¸Á¤µµ¸¦ º¸¿´´Ù.
2. µ¿Á¾°ñ ¹«°Ô º¯È­·®Àº Żȸ½ÃÀÛ 25ºÐ±îÁö ¶Ñ·ÇÇÑ ¹«°Ôº¯È­¸¦ º¸¿´À¸³ª, ±× ÀÌÈÄ¿¡´Â º¯È­
ÀÇ Á¤µµ°¡ ¹Ì¾àÇÏ¿´´Ù.
3. ŻȸµÈ ÀÌ½Ä µ¿Á¾°ñ¿¡ ÀÇÇÑ À̼Ҽº °ñÇü¼º À¯µµ´É ºñ±³¿¡¼­ 20ºÐ¿¡¼­ 30ºÐ°£ ŻȸµÈ ±º
¿¡¼­ °¡Àå ¾çÈ£ÇÏ¿´°í ±× ¿ÜÀÇ ±º¿¡¼­´Â ±× Á¤µµ°¡ ¿­µîÇÏ¿´´Ù
ÀÌ»óÀÇ °á°ú´Â ŻȸµÈ µ¿Á¾°ñ¿¡ ÀÖ¾î °ñÇü¼º À¯µµ´ÉÀ» ±Ø´ëÈ­Çϱâ À§Çؼ­´Â °ñ±âÁú³» ¹«
±â¼ººÐÀÇ ¿ÏÀüÇÑ Å»È¸°¡ ¼±ÇàµÇ¾î¾ß Çϸç, Żȸ°ñ ±âÁúÀÇ º¯¼ºÀÌ ÃÖ¼ÒÈ­µÇ¾î¾ß ÇÔÀ» ½Ã»çÇÑ
´Ù.
#ÃÊ·Ï#
This study has been performed to evaluate the relationship between the remained
mineral components in a decalcified bone matrix and an ectopic bone formation
efficiency. The freezed rat diaphyseal cortical bones measuring 0.5cm in length were
demineralized in heated 0.6N HC1 at 60¡É for 5,10,15,20,25,30,35,40, minutes, respectively,
using a controlled heat ultrasonic cleaner. Each 1cc of decalcifying soultion taken during
decalcification procedure was used to calculate calcium content using calcium dignostics
kit under 600nm of spectrophotomer. After decalcification, each specimen was also
weighed. Then each prepared specimen was implanted into the dorsal pouch of 24
Sprague-Dawley rats divided into 8 groups by time course. The implants were
harvested at 1,2, and 3 weeks and prepared for routine H-E stain specimens to evaluate
osteogenic activity. The results are as follows:
1. Tgere was statistical significant difference in change of calcium concentrtion up to
demineralization of 30 minutes and each allogenic bones decalcifed up to 20 minutes
revealed 99.65% of decalcification in average.
2. There was statistical significant difference in change of weight in demineralized
allogenic bone up to 20 minutes treatment but, no significant change was noted after
that time.
3. the histologic analysis revealed active ecotopic bone formation in the implanted
allografts demineralized for 20, 25, 30, minutes, respectively. However, the other groups
of allografts showed relatively poor osteoinductive activity.
These findings suggest that complete decalcification with a minimized degeneration of
collegen matrix is nesessary to induce maximal osteogenesis by decalcified bone
allograft.

Å°¿öµå

Ectopic bone formation; Decalcification; Osteoinductive activity;

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