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THE IMMUNOHISTOCHEMICAL STUDY ON THE EXPRESSION OF TGF-¥â2 IN THE MAXILLOFACIAL DEVELOPMENT OF A RAT EMBRYO

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Abstract

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¹é¼­ ¹èÀÚÀÇ ¾Ç¾È¸é ¿µ¿ª ¹ß»ý¿¡¼­ TGF-¥âÀÇ ºÐÆ÷¿¡ ´ëÇØ ¿¬±¸Çϱâ À§ÇÏ¿© ÀÚ¼º ¹é¼­¸¦
±³¹Ì½ÃŲÈÄ 13ÀÏ, 15ÀÏ, 18ÀÏ° Èñ»ýÇÏ¿© ¹èÀÚ¸¦ ¾ò¾î³»¾ú´Ù. äµæÇÑ ¹èÀÚ¸¦ ½Ã»ó¸é¿¡µû¶ó
¿¬¼ÓÀýÆíÀ¸·Î Á¦ÀÛÇÏ¿© H&E ¿°»ö ¹× TGF-¥â2¸¦ »ç¿ëÇÏ¿© ¸é¿ªÁ¶Á÷È­ÇÐ ¿°»ö ÈÄ ±¤ÇÐ Çö
¹Ì°æÀ¸·Î °üÂûÇÏ¿© ´ÙÀ½°ú °°Àº °á·ÐÀ» ¾ò¾ú´Ù.
1. 15ÀÏ°ú 18ÀÏ ¹èÀÚ¿¡¼­´Â ¹ß»ýÁßÀÎ ÀüÄ¡ºÎ¿¡¼­ Ä¡À¯µÎ°¡ TGF-¥â2¿¡ ÀúµµÀÇ ¾ç¼º¹ÝÀÀÀ»
º¸¿´°í, Meckel ¿¬°ñÀÇ ÁÖº¯ ¹× ¿¬°ñ ¼¼Æ÷¿¡¼­ TGF-¥â2ÀÇ ¾ç¼º¹ÝÀÀÀ» È®ÀÎÇÒ ¼ö ÀÖ¾ú
´Ù. ±¸°³ÀÇ Çü¼ºÁß¿¡µµ TGF-¥â2ÀÇ °íµµÀÇ ¾ç¼º¹ßÇöÀÌ °üÂûµÇ¾ú´Ù
2. 15ÀÏ°ú 18ÀÏ ¹èÀÚ¿¡¼­ Ä¡¾Æ ¹ß»ý½Ã, ±¸°­ »óÇÇ¿¡¼­ À¯·¡µÈ ¹ý¶û¾Æ¼¼Æ÷ ¿ø±â ¹× ½Å°æ´É
¿¡¼­ À¯·¡µÈ ÁÖº¯ÀÇ Ä¡À¯µÎ¿¡¼­ TGF-¥â2°¡ ¹ßÇöµÇ¾ú´Ù.
3. 13ÀÏ, 15ÀÏ, 18ÀÏ ¹èÀÚ °øÈ÷ ¸ðµç »óÇǼ¼Æ÷¿¡ TGF-¥â2°¡ ¶Ñ·ÇÀÌ °üÂûµÇ¾ú´Ù.
4. 13ÀÏ, 15ÀÏ, 18ÀÏ ¹èÀÚÀÇ ºñ°­ »óÇǼ¼Æ÷¿¡¼­ TGF-¥â2ÀÇ ¹ßÇöÀº ´Ü¼øÇÑ »óÇÇÁ¶Á÷ÀÌ ¾Æ
´Ï¶ó °¨°¢±â°üÀÇ ÈÄ°¢»óÇÇ¿Í °ü·ÃÀÌ ÀÖ¾î º¸À̸ç, 15ÀÏ, 18ÀÏ ¹èÀÚÀÇ ´« ¹ß»ý½Ã »óÇÇÁ¶
Á÷¿¡¼­ TGF-¥â2°¡ ¹ßÇöµÇ¾ú´Ù.
ÀÌ»óÀÇ °á°ú·Î ¹Ì·ç¾î ¹é¼­ ¹èÀÚÀÇ ¾Ç¾È¸é ¿µ¿ª ¹ß»ý½ÃTGF-¥â2´Â ½Å°æ´É¿¡¼­ À¯·¡µÈ ¼¼
Æ÷¿Í °¨°¢±â°üÀÇ »óÇǼ¼Æ÷¿¡ ¹ßÇöµÇ¾î »óÇǼ¼Æ÷ÀÇ Áõ½Ä°ú ºÐÈ­¿¡ °ü¿©ÇÏ°í, °£Áú¼¼Æ÷ÀÎ ±¸
°³ Çü¼º¼¼Æ÷ ¹× ¿¬°ñ¼¼Æ÷ÀÇ Áõ½Ä°ú ºÐÈ­¿¡µµ ¿µÇâÀ» ¹ÌÄ¥ °ÍÀ¸·Î »ç·áµÈ´Ù.
#ÃÊ·Ï#
TGF-¥â was identified as a homeodimeric peptide with a molecular mass f 25,000 D,
and is a multifuntional peptide controls proliferation, differentiation, and other functions
in many cell type, Many cells synthesize TGF-¥â and essentially all them have specific
receptors for this peptide. TGF-¥â regulates of many other peptide growth factors and
determines a positive or negative direction of their effects. At present there is relatively
little information about the intrinsic physiologic role of TGF-¥â n vivo. Experimental
study was performed to observe the expreession of TGF-¥â2 in the craniomaxillofacial
devalopment of a rat embryo.
Four male rats each weighting about 250g and twelve female rats each weighing
about 200g were used, and induced to pregnancy. The embryos were serially sacrificed
on the 13. 15. 18day after coitus. The embryos were serially sectioned by 4¥ìm and
stained with H&E and immunohistochemical stain with TGF-¥â2 and the histological
examinations were carried out under the light microscope. After examination and
comparision of specimens, the results of study were as follows :
1. In a 15, 18d emdryos, low grade strain of TGF-¥â2 id found in the detal papillar of
developing incisor, and around the Meckles cartilage and the other cartilage TGF-¥â
2 is positive. In the formation of palate. TGF-¥â is highly positive.
2. Ina devalopment of teeth in 15, 18d embryos, THG-¥â2 is seen in the enameloblast
derived from oral epithelium and the mesenchymal primordium of the plup.
3. In a epithelium of 13, 15, 18d emubryos, TGF-¥â2 Is seen at a high levels.
4. In a 13, 15, 18d embryos, TGF-¥â2 positivity of nasal cavity epithelium is related
to the sensory organ epithelium. In a 15, 18d embryos, the lens of the eye derived
from the surface embryonic ectoderm is TGF-¥â2 positive.
From above results, staining of TGF-¥â is associated wiht tissues derived from neural
crest mesenchyme and tissues of sensory organ derived from ectoderm. masked is also
seen when remodeling of mesenchyme or mesoderm occurs, as during formation of
palate and catilage.

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