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A Study Of The Radiation Effects On The Basal Cell Of The Rat Tongue Epithelium According To The Exposure Liming

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Abstract

ÀúÀÚ´Â ¹é¼­ 51¸¶¸®¸¦ ´ëÁ¶±º, 5±ºÀÇ ½ÇÇ豺À¸·Î °¢°¢ ³ª´©¾î ¼¼½·-137ÀÌ ¼±¿øÀÎ MK
Cell irradiator¸¦ »ç¿ëÇÏ¿© ¾à 396cGyÀÇ ¹æ»ç¼±À» Á¶»çÇÑ ÈÄ »ýÈÄ 2ÁÖ, 4ÁÖ, 6ÁÖ° ¹é¼­¸¦
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1. ¹æ»ç¼±Á¶»ç ÈÄ Á¦ÀÏ ¸ÕÀú »ý±â´Â º¯È­´Â ¼¼Æ÷Áú³»¿¡¼­ÀÇ °øÆ÷ÀÇ Çü¼ºÀ̸ç ÀÌ·¯ÇÑ º¯È­
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È®ÀåÀÌ µÚÀÌ¾î °üÂûµÇ¾ú´Ù.
2. ¸ðµç ½ÇÇ豺¿¡¼­ »óÇÇÀÇ ±âÀú¼¼Æ÷°¡ °¡Àå ½ÉÇÑ º¯¼ºÀ» º¸¿´À¸¸ç ¼¼Æ÷¹è¿­ÀÇ ÀÌ»ó, °øÆ÷
Çü¼º, ¼¼Æ÷°£±ØÀÇ È®Àå ¹× »ç¸³Ã¼¿Í °ú¸³³»ÇüÁú¼¼¸ÁÀÇ È®Àå, ÇÙ³» ¿°»öÁú ÀÀÃàÀÌ °üÂûµÇ¾ú
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3. ¸ðµç ½ÇÇ豺¿¡¼­ »ýÈÄ 4ÁÖ¿¡ °¡Àå ½ÉÇÑ ¼¼Æ÷º¯¼ºÀÌ º¸¿´À¸¸ç »ýÈÄ 6ÁÖ ¼Ò°ß¿¡¼­´Â ±â
Àú¼¼Æ÷ÃþÀÇ °úÇü¼ºÀÌ °üÂûµÇ¾ú´Ù.
4. »ýÈÄ 3ÀÏ°ú 8ÀÏ¿¡ ¹æ»ç¼±À» Á¶»çÇÑ 3±Ù°ú 4±ºÀÌ ÀӽŠÁß¿¡ ¹æ»ç¼±À» Á¶»çÇÑ 1±º°ú 2±º,
¼³ÀÇ ¹ßÀ°ÀÌ ¿Ï·áµÈ ÈÄ ¹æ»ç¼±À» Á¶»çÇÑ 5±º¿¡ ºñÇØ ½ÉÇÑ ±âÀúÃþÀÇ º¯¼ºÀ» º¸¿´°í ÀÌ º¯¼º
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#ÃÊ·Ï#
The purpose of this study was to investigate chronic radiation effects on the basal
ceil of the rat tongue epithelium according lo different irradiation timing.
Forty-two female rats were decided into 5 experimental groups according to different
irradiation timing and were irradiated single dose of 396cGy by MK cell irradiator using
Cs-137. Experimental rats were sacrificed at the 2nd week, 4th week and 6th week after
birth. The specimens were examined with light microscope and transmission electron
microscope.
The following results were obtained.
1. The first changes after irradiation were vacuoles. The vacuoles were chiefly
observed in the cytoplasm, perinuclei area, and nuclei.
2. The most severe degenerative changes in the basal cell layer were observed in all
experimental groups. ; cellular disarragement, vacuole formation, widening of intercellular
space, enlarged mitochondria & rER, and chromatin clumping were seen.
3. The cellular degenerative changes were most severe at the 4th week after birth in
all experimental group, and the basal Gell hyperplasia was seen at the 6th week in the
most of experimental groups.
4. The experimental groups 3 and 4 show more severe and more prolonged cellular
degeneration than experimental groups 1 and 2, which were irradiated in pregnancy, and
experimental group 5, which was irradiated after tongue maturation.

Å°¿öµå

irradiation; tongue; radiation injury; basal cell hyperplasia;

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