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HEALING PROCESS OF THE CALVARIAL DEFECT FILLED WITH HYDROXYLAPATITE AND TGF-¥â IN RAT

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±ÇÇõµµ (  ) - ¿ø±¤´ëÇб³ Ä¡°ú´ëÇÐ ±¸°­¾Ç¾È¸é¿Ü°úÇб³½Ç
±èÀºÃ¶ (  ) - ¿ø±¤´ëÇб³ Ä¡°ú´ëÇÐ ±¸°­º´¸®Çб³½Ç
¿À½Âȯ (  ) - ¿ø±¤´ëÇб³ Ä¡°ú´ëÇÐ ±¸°­¾Ç¾È¸é¿Ü°úÇб³½Ç

Abstract

°á·Ð
±¸°­¾Ç¾È¸é ¿µ¿ª¿¡¼­ ¼Õ»ó ¾Ç°ñÀ» ¼º°øÀûÀ¸·Î Ä¡À¯½ÃÅ°°í ¼Õ»ó ºÎÀ§ ÀÇ ½Å»ý°ñ À¯µµ¸¦ ÃË
Áø ½Ãų¼ö ÀÖ´Â ¹æ¹ýÀ» ¿¬±¸ÇÏ°íÀÚ ¹é¼­ µÎ°³°ñ¿¡ °á¼ÕÀ» ¸¸µé¾î ºñÈí¼ö¼º
hydroxylapatite(HA)¸¦ À̽İú µ¿½Ã¿¡ TGF-¥â¸¦ Åõ¿©ÇÏ¿© TGF-¥â°¡ °ñ ´ë»ç¿¡ ¾î¶°ÇÑ ¿ª
ÇÒÀ» ÇÏ´ÂÁö¸¦ ¾Ë¾Æº¸°íÀÚ Á¶Á÷ ¹× ¸é¿ªÁ¶Á÷È­ÇÐÀû °Ë»ç¸¦ ÅëÇÏ¿© ´ÙÀ½°ú °°Àº °á·ÐÀ» ¾ò¾ú
´Ù.
1. ´ëÁ¶±º 1ÁÖ¿Í 2ÁÖ¿¡ À°¾ÆÁ¶Á÷ Çü¼ºÀÌ ´Ù¸¥ ½ÇÇ豺¿¡ ºñÇÏ¿© ¸¹¾ÒÀ¸¸ç, ½ÇÇè 8ÁÖ ¹× 12
ÁÖ¿¡¼­µµ °ñ °á¼ÕºÎ°¡ ¼¶À¯Á¶Á÷À¸·Î ä¿öÁ® °ñÀ¯µµ´Â ¸ðµç ½ÇÇ豺ÀÇ À̽ĺο¡¼­ °üÂûµÇÁö
¾Ê¾Ò´Ù.
2. ¿°Áõ¼¼Æ÷ ħÀ±Àº ´ëÁ¶±º ½ÇÇè 1, 2ÁÖ¿¡ Á¦ÀÏ ¸¹¾Ò°í, ÆÄ°ñ¼¼Æ÷ È°¼ºÀº HA ´Üµ¶ À̽ıº
1ÁÖ¿Í 2ÁÖ¿¡ °¡Àå ¸¹ÀÌ ³ªÅ¸³µÀ¸³ª 4ÁÖ ÀÌÈÄ¿¡´Â ±º°£¿¡ Â÷ÀÌ°¡ ¾ø¾ú´Ù.
3. TGF-¥âÅõ¿©±º ½ÇÇè1, 2ÁÖ¿¡´Â ¿°Áõ¼¼Æ÷ ħÀ±ÀÌ Á¦ÀÏ Àû¾úÀ¸¸ç À̽Äü ÁÖÀ§ÀÇ ¼¶À¯¼º
°áüÁ¶Á÷ÀÇ ¼º¼÷ÀÌ Á¶±â¿¡ ¸¹ÀÌ °üÂûµÇ¾ú´Ù.
4. °ñÀüµµ´Â TGF-¥âÅõ¿©±º 2ÁÖ¿Í4ÁÖ¿¡ °¡Àå ¸¹¾ÒÀ¸³ª 6ÁÖÀÌÈÄ¿¡´Â ±º°£ Â÷ÀÌ°¡ ¾ø¾ú´Ù.
5. Osteonectin ¹ßÇö¿¡¼­ À̽ĺΠÀÚü´Â TGF-¥âÅõ¿©±ºÀÇ 1ÁÖ¿¡¼­ 6ÁÖ¿¡¼­¸¸ °æ¹ÌÇÏ°Ô Áõ
°¡µÇ¾úÀ¸¸ç, ÀÎÁ¢ ¼÷ÁÖ°ñ¿¡¼­´Â ÀÌ½Ä 4ÁÖ±îÁö HA ´Üµ¶ À̽ıºÀÌ ³ª ´ëÁ¶±º¿¡ ºñÇÏ¿© Áõ°¡
µÇ¾ú´Ù.
6. Osteodacin ¹ßÇöÀº À̽ĺο¡¼­ TGF-¥âÅõ¿© 4ÁÖ¿¡¼­¸¸ ´Ù¸¥ ½ÇÇ豺¿¡ ºñÇÏ¿© Áõ°¡µÇ¾ú
À¸³ª ¼÷ÁÖ°ñ¿¡¼­´Â ½ÇÇ豺°£¿¡ Â÷ÀÌ°¡ ¾ø¾ú´Ù.
ÀÌ»ó°ú °°Àº ¼Ò°ßÀ¸·Î ¾Ç¾È¸é ¿µ¿ªÀÇ °ñ ¼Õ»ó½Ã ºñÈí¼ö¼º hydroxylapatite À̽İú µ¿½Ã¿¡
TGF-¥âÀÇ Åõ¿©´Â ¿°Áõ¹ÝÀÀ °¨¼Ò ¹× °£¿±¼¼Æ÷ Áõ½ÄÀ» °¡Á®¿Í ÃÊ±â ¹× Á߱⠰ñÀüµµ¿¡ È¿°ú
°¡ ÀÖ¾î ÀΰøÄ¡¾Æ ¸Å½ÄÀ̳ª °ñ °á¼ÕºÎ ȸº¹½Ã ÀÓ»óÀû Àû¿ëÀÌ °¡´ÉÇÏ´Ù°í »ý°¢µÈ´Ù.

The purpose of this study was to evaluate the healing process of the calvarial defect
filled with hydroxylapatite(HA) and TGF-¥â in Rat. 72 Sprague-Dawly rats were
divided into 3 groups, control and two experimental groups. Bony defect were artificially
prepared in the calvaria of all 72 rats and followed by implantation of HA (experimental
group of 24 rats) and HA + TGF-¥â (another experimental group of 24 rats) into the
defects. Sequential sacrifice was performed at 1, 2, 4, 6, 8, 12 weeks of experiment.
Obtained specimen was stained with Hematoxylin and Eosin, Masson's Trichrome and
Immunohistochemistry.
The results were as follows;
1. Granulation tissue was prominent on control group in 1 and 2 weeks. Bony defects
were filled with dense fibrous tissue through the whole experimental period and
osteoinduction could not be observed in all groups.
2. Inflammatory cell infiltration was prominent on control group in 1 and 2 weeks and
osteoclastic activity was high in HA implanted experimental group at 1 and 2 weeks.
3. Inflammatory cell infiltration was less and maturation of fibrous tissue could be
found on HA + TGF-¥â implanted experimental group at 1 and 2 weeks.
4. Osteoconduction activity was high in HA + TGF-¥â implanted experimental group
at 2 and 4 weeks but there was no difference after 6 weeks among 3 group.
5. In grafted site of HA + TGF-¥â implanted group, osteonectin expression was
slightly increased from 1 week to 6 weeks. In the host site, it was increased from 1 to
4 weeks.
6. In grafted site of HA + TGF-¥â implanted group, osteocalcin expression was high
at 4 weeks. In the host site, we could find the difference among 3 group.
From above results, the HA with mixture of TGF-¥â has the potentiality of
potentiality of promoting bone formation in the bony defect area in the rat.

Å°¿öµå

Animal Model; Hydroxylapatite; growth factor; Osteoconduction; Osteocalcin; Osteonetin;

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