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VINCROSTINE EFFECTS ON DENTINOGENESIS IN RAT

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Abstract

îÊíº´Â ±¤¹üÀ§ ÇÏ°Ô ××éĵǴ ù÷÷Ôð¥ÀÇ ÇϳªÀÎ vincristineÀ» ãùúÐîÜÀ¸·Î ÛÜà©¿¡´Ù ÷áæ¨ÇÏ
°í ±× ç¯úÂÀÌ ï·öÍßÚä³ÐñòõÀÇ û¡à÷¿¡ ¹ÌÄ¡´Â ¹Ù¸¦ κóÌÇÑ ¹Ù°¡ ÀÖ¾ú´Ù.
ãùúÐÓßßÚÀÎ Spraque DawleyͧÀÇ ÛÜà©(60¸¶¸®)¿¡´Ù vincristine(Lilly)ÀÇ ÷áæ¨Û°ÛöÀº
vincristine 0.1, 0.3, 0.5 ¹× 0.7mg/kg.B.W.¸¦1ìí, 1üÞ, ææ 3üÞ Ú­ð¡Øæ¿¡´Ù ÷áæ¨ÇÏ°í ÊÀÐù ìé
ñÎ, ì£ñÎ ¹× ß²ñÎÊàÀÌ ÌèΦµÈ ý­ ether¸¶ÃëÇÏ¿¡ ýúßå½ÃÅ°°í, ±× ù»äÉ ï·öÍÝ»¸¦ ï·ö¢ÇÏ¿©10%
ñéàõ formalin¿¡ ͳïÒÇÏ°í 5% taichloracetic acidéÁäû¿¡¼­ ÷­üéÇÑ ý­ hematoxylineosinÀ» êÓ
ÇÑ æøßäÀ» ÇÏ¿© κóÌÇѹ٠´ÙÀ½°ú °°Àº Ì¿Íý¸¦ ¾ò¾ú´Ù.
1. Vincristine÷áæ¨ý­ ìéñÎÌèΦÏØ¿¡¼­´Â ßÚä³ä´á¬øàÀÇ â¦îÜÀÎ Êõá´¿Í û¡÷¾îÜÀΠܨûù°¡ κóÌ
µÇ³ª ÷áæ¨åÖÀÌ ñòÊ¥µÊ¿¡ µû¶ó Ðñòõû¡à÷¿¡µµ î¡äô°¡ å©Ñõǰí ÀÖÀ½ÀÌ ËþÌðµÇ¾ú´Ù.
2. vincristine ÷áæ¨ý­ ì£ñÎÌèΦÏØ¿¡ À־´Â ßÚä³ä´á¬øà¿¡¼­ÀÇ û¡÷¾îÜ Ü¨û¡°ú ÛÕæêÝÕïá ¹×
â¦îÜÀÎ Êõá´¿Í Ðñòõû¡à÷ÝÕîïÀÌ ÷áæ¨åÖÀÇ ñòÊ¥¿Í ´õºÒ¾î úéîÊÇÏ¿© á¶êÝ dentin niche¿Í ÍéåÆ
ßÚä³òõÀ» Û¡úÞ½ÃÅ°°í ÀÖ¾ú´Ù.
3. Vincristine ÷áæ¨ ý­ ß²ñÎÌèΦÏØ¿¡ À־´Â ÝïÎòîÜ ïáßÈîÜÀÎ á¬øàµéÀÇ õóúÞÀ¸·Î
vincristineÀÇ ç¯úÂÀ¸·ÎºÎÅÍ Á¡Â÷ áóÜֵǾîÁö´Â ÌËú¾À» ³ªÅ¸³»°í ÀÖ¾ú´Ù.
#ÃÊ·Ï#
Vincristine in dose of 0.1, 0.3, 0.5 and 0.7 mg/kg was administered to 60
Sprague-Dawley rats weighing from 140 gm to 160 gm by intravenous injection via tail
vein. And then animals were sacrificed one, two, and three weeks after experiments.
The effects of vincristine on the development on dentinogenesis were studied
histologically in the mandibular incisor teeth of rats.
After examination and comparison of all specimens, the results of this study were
obtained as follows;
1. After one week;
Alterations of odontoblasts in shapes and numbers were principal findings of low dose
administration. With increased dose, dentin matrix formation disturbances were observed.
2. After two weeks;
Dysplasia of odontoblasts and disturbances of dentin matrix formation were more
prominent in 2nd week than in 1st week, resulting in osteodentin, dentin niches.
3. After three weeks;
At the near of osteodentin, advent of relatively normal odontoblasts revealed the
tendency of recovery from vincristine effects.

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