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The Effects Of TGF-¥â1 On e Bone Regeneration In Guinea Pig Mandible

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Abstract

ÃÖ±Ù Ä¡°úÀÓ»ó¿¡¼­´Â ¹ßÄ¡³ª ¿Ü»ó¿¡ ÀÇÇÑ °ñ¼Õ»ó ÀÌ¿Ü¿¡µµ ¾Ç¾È¸é¼ºÇüÀ̳ª ÀΰøÄ¡¾Æ¸Å½Ä
À» ½ÃÇàÇϱâ À§ÇÑ ÀÎÀ§ÀûÀÎ °ñ¼Õ»óÀÌ Á¡Â÷ Áõ°¡µÊ¿¡ µû¶ó, ¼Õ»ó°ñÀ» ¼º¼÷µÈ ±¸Á¶·Î ºü¸£°Ô
Àç»ý½ÃÅ°´Â °ÍÀÌ Ä¡°úÀÇ»çµéÀÇ Ä¿´Ù¶õ °ü½É»ç°¡ µÇ°í ÀÖ´Ù
ÀÌ¿¡ ÀúÀÚ´Â °ñ¸ð¼¼Æ÷ÀÇ ºÐÈ­¿Í Áõ½ÄÀ» ÃËÁø½ÃÄÑ °ñÇü¼º¿¡ Áß¿äÇÑ ¿ªÇÒÀ» ÇÏ´Â ÇüÁúº¯Çü
¼ºÀåÀÎÀÚ¸¦ »ç¿ëÇÏ¿© Çü¼ºµÇ´Â °ñ¼ÒÁÖÀÇ Àç»ý°úÁ¤À» °üÂûÇÏ°íÀÚ, guinea PigÀÇ ÇϾǰñü¿¡
Á÷°æ 3 §®ÀÇ ¼Õ»óÀ» °¡ÇÑ ÈÄ, BiogranÀ» ¸Å½ÄÀç·Î »ç¿ëÇÏ¿© ½ÇÇèÇÏ¿´´ø ¹Ù, ´ÙÀ½°ú °°Àº °á
°ú¸¦ ¾ò¾ú´Ù.
1. À°¾ÆÁ¶Á÷³»ÀÇ ÃâÇ÷»óÀº ¾ç±º °øÈ÷ ½ÇÇè 1ÁÖÈÄ¿¡ ¼Ò½ÇµÇ¾úÀ¸¸ç, À°¾ÆÁ¶Á÷ÀÇ ¼º¼÷Àº ½ÇÇè
±º¿¡¼­ ´õ¿í È°¹ßÇÏ°Ô ÀÌ·ç¾îÁ³°í, ¸¹Àº ¼¼Æ÷¼ººÐÀ» ÇÔÀ¯ÇÏ°í ÀÖ¾ú´Ù
2. °ñ¸Å½ÄÀç¿Í ¼Õ»ó°ñ º¯¿¬ÀÇ °ñ¸ð¼¼Æ÷ÀÇ ºÐÈ­´Â ¾ç±º °øÈ÷ ½ÇÇè 1ÁÖÈÄ¿¡ ½ÃÀ۵ǾúÀ¸¸ç,
Çü¼ºµÈ °ñµµ ½ÇÇè 1ÁÖÈÄ¿¡ ¹ßÀ°°ú ¼º¼÷µµ°¡ ³·Àº ÇüÅ·Π°üÂûµÇ±â ½ÃÀÛÇÏ¿´À¸³ª ½ÇÇ豺¿¡¼­
º¸´Ù dzºÎÇÏ°Ô °üÂûµÇ¾ú´Ù. ¶ÇÇÑ ÆÄ°ñ¼¼Æ÷´Â ¾ç±º °øÈ÷ ½ÇÇè 3ÁÖ±îÁö °üÂûµÇ¾úÀ¸³ª, ÀÌÀÇ ¼ö
´Â ½ÇÇè±â°£ÀÇ °æ°ú¿¡ µû¶ó Á¡Â÷ °¨¼ÒµÇ¾ú´Ù.
3. Æí±¤Çö¹Ì°æ»ó¿¡¼­, Çü¼ºµÈ °ñ±âÁúÀº ½ÇÇè 1ÁÖÈÄ¿¡ ¹Ì¾àÇÏ¿´À¸³ª ½ÇÇè±âÀÏÀÌ °æ°úµÊ¿¡
µû¶ó Ä¡¹ÐÇÏ¿©Á³°í, ÀÌÀÇ Á¤µµ´Â ½ÇÇ豺¿¡¼­ ´õ¿í ÇöÀúÇÏ¿´´Ù.
4. ¹Ì¼¼¹æ»ç¼±»çÁø¿¡¼­, °ñ¼ÒÁÖÇüÅÂÀÇ ½Å»ý°ñÀÇ Çü¼ºÀº ½ÇÇè 2ÁÖÈÄ¿¡ °üÂûµÇ±â ½ÃÀÛÇÏ¿´À¸
¸ç, ´ëÁ¶±º¿¡ ºñÇÏ¿© Á¶±â¿¡ °üÂûµÇ¾ú°í, ½ÇÇè±âÀÏÀÌ °æ°úµÊ¿¡ µû¶ó Á¡Â÷ Áõ°¡µÇ¾î ½ÇÇè 4ÁÖ
ÈÄ¿¡´Â ¼Õ»óºÎÀ§°¡ ÇöÀúÇÏ°Ô °¨¼ÒµÇ¾ú´Ù.
#ÃÊ·Ï#
The purpose of this study was to observe the effect of TGF-¥â1, which promotes
differentiation and proliferation of osteoblasts, on bone regeneration. Experimental bone
defects that measured 3 mm in diameter were created on the mandibles of guinea pig
by removal of bone with the use of trephine burs. lift one side of mandibular body, the
experimental groups, bone defects were grafted with Biogran(Orthovita Co., U.S.A) and
TGF-¥â1 (R&D System Co., U.S.A.). life the remaining side of the mandiblar body, the
control groups, bone defects were grafted with only Biogran, Guinea pigs in the control
and experimental groups were serially terminated by fours on the 3 days, the 1 week,
the 2 weeks, the 3 weeks, and the 4 weeks after experiment, and both sides of the
mandibular bodies were removed and fixed with 10% neutral formalin. They were
decalcified and embedded in paraffin as using the usual method. The specimen sectioned
and stained with hematoxylin and rosin. Also, they were radiographed with a soft X-ray
apparatus.
The obtained results were as follows;
1. Hemorrhagic condition, observed in the granulation tissues, disappeared on the 1
week after experiment in both groups, and more prominent in the experimental group.
The granulation tissues of the experimental group had larger number of cells than those
of the control group.
2. Osteoblastic differentiation in the margin of grafted material and adjacent bone was
observed on the 1 week after experiment in both groups. Also, bone formation was
observed in immature form on the 1 week after experiment, and more and more
prominent in the experimental group.
3. In the polarizing microscopic examination, bone matrix was very loose old the 1
week after experiment, but increase in density with time, and more prominent In the
experimental group.
4. In the microradiographic examination, newly formed bone was observed in the
experimental group on the 2 weeks after experiment, and this was observed earlier than
in the control group. Newly formed bone was increased with time and defected area
was markedly decreased on the 4 weeks after experiment.

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