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IMMUNOHISTOCHEMICAL STUDY FOR THE DETECTION OF THE TUMOROUS CHANGES OF REMAIND ENAMEL EPITHELIUM IN THE IMPACTED HUMAN TOOTH FOLLICLE

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Abstract

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1. ¸Åº¹Ä¡¾Æ Ä¡¹è³¶¿¡ ÀÖ´Â ÀÜÁ¸ ¹ý¶û»óÇÇ´Â PCNA¿Í Ki - 67ÀÇ Ç×ü¿¡ ´ëÇÏ¿© °­ÇÑ ¾ç
¼º ¹ÝÀÀÀ» º¸¿´´Ù.
2. ¸Åº¹Ä¡¾ÆÀÇ Ä¡¹è³¶¿¡ ÀÖ´Â ÀÜÁ¸ ¹ý¶û»óÇÇ¿¡¼­ ¼¼Æ÷ ºÐÈ­¿¡ °ü·ÃµÇ´Â TGase-C, K, E¿¡
´ëÇÑ ¸é¿ª¹ÝÀÀÀÌ ¾àÇÏ°Ô °üÂûµÇ¾ú´Ù.
3. ¸Åº¹Ä¡¾ÆÀÇ Ä¡¹è³¶¿¡ ÀÖ´Â ÀÜÁ¸ ¹ý¶û»óÇÇ¿¡¼­ apoptosis·Î ¼Ò¸êµÇ´Â Çö»óÀº °ÅÀÇ ¹ß°ß
µÇÁö ¾Ê¾Ò°í, ¿ÀÈ÷·Á apoptosis¸¦ ¾ïÁ¦ÇÏ´Â bcl-2ÀÇ ¸é¿ª¹ÝÀÀÀÌ ºÎºÐÀûÀ¸·Î °üÂûµÇ¾úÀ¸¸ç,
Á¾¾ç ¾ïÁ¦ÀÎÀÚÀÎ p53ÀÇ ¹ßÇöÀÌ ¾àÇÏ°Ô Áõ°¡µÇ¾ú´Ù.
4. Á¶Á÷È­ÇÐÀû ¿°»ö¹ý (toluidine blue, PAS, Van Gieson, Masson trichrome)À» ÅëÇؼ­ ¸Å
º¹Ä¡¾Æ Ä¡¹è³¶¿¡´Â ºñ±³Àû dzºÎÇÑ Á¡¾×¼ºÀÇ Ä¡¼º Á߹迱¼º Á¶Á÷ÀÌ ÀÜÁ¸µÇ¾î ÀÖÀ½À» È®ÀÎÇÏ
¿´´Âµ¥, Àü¹ÝÀûÀ¸·Î ¹ý¶û»óÇÇ ÀÜ»çÀÇ ºÐÆ÷¸¦ µû¶ó Á¡¾×¼ºÀÇ Ä¡¼ºÁ߹迱¼º Á¶Á÷ÀÌ Ç³ºÎÇÏ°Ô
°üÂûµÇ¾ú´Ù.
ÀÌ»óÀÇ °á°ú¿¡¼­ ÀÜÁ¸ ¹ý¶û»óÇÇ ¼¼Æ÷µéÀº Àû´çÇÑ Àڱؿ¡ ÀÇÇÏ¿© ÀçÁõ½ÄÀ» Çϰųª Á¾¾ç¼¼
Æ÷·Î ¹ßÀüµÉ ¼ö ÀÖ´Â °¡´É¼ºÀÌ ³ôÀº ¼¼Æ÷ Áý´ÜÀ¸·Î ¿©°ÜÁö¹Ç·Î °¡´ÉÇÑ ÇÑ ¸Åº¹Ä¡¾Æ¸¦ ÀÏÂï
¹ß°ßÇÏ¿© Ä¡¹è³¶À» Æ÷ÇÔÇÏ´Â ÀÎÁ¢Á¶Á÷À» ¿ÏÀüÈ÷ Á¦°ÅÇÏ´Â °ÍÀÌ ÇÊ¿äÇÏ´Ù°í »ç·áµÇ´Â ¹ÙÀÌ
´Ù.

In order to investigate the potential cellular activity of remaind enamel epithelium of
impacted tooth follicle, we have examined 75 tooth follicular tissues from impacted teeth
by immunohistochemical methods. Particular focus on the proliferation, differentiation and
apoptosis-antiapoptosis of remained enamel epithelium was made. Follicular tissues were
removed from impacted teeth, fixed in neutral formalin and prepared for 4§­ thick 20
serial sections. Hematoxylin & eosin staining was done routinely, and the
mucopolycharide materials of myxoid odontogenic mesenchyme was detected by
histochmical reactions of toluidin blue, PAS, Van Gieson, Masson's trichrome Various
antibodies, i.e., PCNA(proliferating cell nuclear antigen) and Ki-67 for proliferative
activity, transglutaminase-C, transglutaminase-K, transglutaminase-E, TGF-¥â
1, bcl-2, and p53 were used. Apop-tag staining was also done to detect
the phenomenon of apoptosis. Both of the reduced enamel epithelium in the luminal side
of tooth follicle and the enamel epithelial rests scattered in the wall of tooth follicle
showed frequent positive reaction for the PCNA and Ki-67, and these cells were also
positive for the transglutaminase-C, K, E. On the other hand the enamel epithelium was
not stained by Apop-tag staining but weakly positive for bcl-2 and p53. Relatively high
amount of myxoid odontogenic mesenchyme was also diffusely observed in the tooth
folliclular tissue, and the distribution of the myxoid odontogenic mesenchyme was
closely related with the distribution of enamel epithelial rest infiltration. Taken together,
these data may suggest that the remaind enamel epithelial cells are biologically acitive
rather than the dormant state after the completion of tooth formation, and that the
remaind enamel epithelium may has interaction with odontogenic mesenchyme and will
not be degraded easily but may have a potential for the odontogenic tumors.

Å°¿öµå

Remained enamel epithelium; Tooth follicle; Cellular activity; Tumorous changes;

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