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LOCALIZATION OF BONE MATRIX GENE mRNA IN REGENERATING BONE TISSUE DURING THE GUIDED BONE REGENERATION

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Abstract

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À§ÀûÀ¸·Î °ñ°á¼ÕºÎ¸¦ Çü¼ºÇÏ°í, ºñÈí¼ö¼º ºñ°øÀ¯¼º Â÷Æó¸·À» ÀÌ¿ëÇÏ¿© °ñ¼ºÈ¸º¹ ½Ã ÁÖÀ§ ¿¬
Á¶Á÷ÀÇ À¯ÀÔÀ» Â÷´ÜÇÑ ´ÙÀ½ °ñ¼ö°­ ¹× °ñ¸éÀ¸·ÎºÎÅÍ À¯·¡µÇ´Â ¼¼Æ÷µé¿¡ ÀÇÇÑ °ñ¼ºÈ¸º¹ ¾ç»ó
°ú À̶§ ÀÌµé ¼¼Æ÷ÀÇ Á¶°ñ¼¼Æ÷·ÎÀÇ ºÐÈ­Á¤µµ¸¦ ÆÇÁ¤Çϱâ À§ÇÏ¿© ºñ±³¿ø¼º °ñ±âÁú ´Ü¹éÁúÀÎ
OSN, OPN ±×¸®°í OSC, mRNAÀÇ ¹ßÇö ¾ç»óÀ» ºñ±³¡¤°ËÅäÇÏ¿© ´ÙÀ½°ú °°Àº °á°ú¸¦ ¾ò¾ú
´Ù. ½ÇÇè Àü±â°£¿¡ °ÉÃÄ °ñÀç»ýÀ¯µµ¼úÀ» ½ÃÇàÇÑ ±º¿¡¼­ º¸´Ù ½Å¼ÓÇÏ°í ¾çÈ£ÇÑ °ñ¼ºÈ¸º¹À»
º¸¿´´Ù. Â÷Æó¸·À» ó¸®ÇÑ ½ÇÇ豺¿¡¼­´Â ÀÎÁ¢°ñÀÇ ÁÖº¯ºÎ·ÎºÎÅÍ ½Å»ý°ñÀÌ Çü¼ºµÇ¾î Á¶°ñ¼¼Æ÷
ÀÇ ºÐÈ­°¡ Á¶±â¿¡ °ñ°á¼ÕºÎ¿¡ ±¹ÇѵǾî À¯µµµÈ ¹Ý¸é, ´ëÁ¶±º¿¡¼­´Â ÁÖº¯¿¬Á¶Á÷ÀÇ °³ÀÔÀ¸·Î
ÀÎÇÏ¿© ½ÇÇ豺 º¸´Ù´Â ¾à 1ÁÖÁ¤µµ ½Å»ý°ñÀÇ Çü¼ºÀÌ Áö¿¬µÇ¾úÀ¸¸ç, µû¶ó¼­ °ñ¼ö°­ ³»ÀÇ ±âÁú
¼¼Æ÷ÀÇ Á¶°ñ¼¼Æ÷·ÎÀÇ ºÐÈ­ ¿ª½Ã Áö¿¬µÇ¾ú´Ù. ÀÌ»óÀÇ »ç½Ç¿¡¼­ °ñâ»óºÎ¿¡¼­ Â÷Æó¸·¿¡ ÀÇÇØ
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»ýµÈ °ñÁÖµéÀÇ ºü¸¥ °ñ °³Á¶¸¦ Á¶ÀåÇÏ¿´À½À» ½Ã»çÇÑ´Ù.

To investigate the expression pattern of noncollagenous bone matrix proteins such as
osteonectin(OSN), osteopontin(OPN) and osteocalcin(OSC) mRNA during bony healing
procedure induced by guided bone regeneration method, we made artificial defects on
bilateral femur of rats. Then induced bony healing by application of a nonabsorbable
PTFE membrane in experimental sites and without its application in control sites for 3
weeks. The mRNA expression pattern at specimens obtained at 1, 2 and 3 weeks after
operation was detected by in situ hybridization method using its antisense mRNA
probes.
The experimental sites revealed more rapid and favorable bony healing than control
sites and new bone formation was limited within defected area by inhibitory activity of
bone marrow cells. In experimental sites, the OSN and OSC mRNA were expressed
strongly on osteoblasts of regenerating cortical bone at 1st week and on osteoblasts
lining the trabecular bone in marrow space at 3rd week, whereas ,in control sites, their
expression were noted on osteoblasts lining the reactively formed sponge bones at 2nd
and 3rd week. In addition, the OPN mRNA was expressed on osteoblasts and
osteoclasts at sites of remodeling and osteocytes of remained trabecular bone of defected
area in experimental sites and on macrophages at 1st week and osteoclasts at sites of
remolding at 2nd and 3rd week in control sites.
The above findings suggest that the more rapid and favorable bony healing might be
induced by blocking of invading fibrous connective tissue into bony defects. And the
earlier expression of OSN and OSC mRNA on osteoblasts of experimental sites suggest
that the formation and resorption of regenerating bone was more rapidly progressed in
confined spaces made by applicate membranes.

Å°¿öµå

In situ hybridization; Osteocalcin; Osteopontin; Osteonectin; Guided tissue regeneration(GTR);

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