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AN EXPERIMENTAL STUDY OF THE IRRADIATION EFFECTS ON RAT PAROTID GLAND

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À̱ÔÂù(×ÝÐ¥ó¾)/Kyu Chan Lee ÀÌ»ó·¡(ì°ßÔÕÎ)/Sang Rae Lee

Abstract

ÀúÀÚ´Â ÛÜà©ÀÇ ÔéÌòÝ»¿¡ Û¯ÞÒàÊÀ» ðÎÞÒÇÏ¿©, ÀÌ·Î ÀÎÇÑ ì¼ù»àÍÁ¶Á÷¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» ±Ô¸í
Çϱâ À§ÇÏ¿©, ÀÏÁ¤Á¶°ÇÇÏ¿¡¼­ »çÀ°ÇÑ ÛÜà© 24µÎ¸¦ Cobalt-60 ½ÉºÎÄ¡·á ÀåÄ¡¸¦ »ç¿ëÇÏ¿©
Field Size°¡ 12¡¿5§¯, SSD°¡ 50§¯, Depth°¡ 1§¯ÀÎ Á¶°Ç¿¡¼­ l0GyÀÇ Û¯ÞÒàÊÀ» ´ÜȸÁ¶»çÇÏ¿´
´Ù. 20µÎ¸¦ ½ÇÇ豺À¸·Î ÇÏ°í, Û¯ÞÒàÊÀ» Á¶»çÇÏÁö ¾ÊÀº 4µÎ¸¦ ´ëÁ¶±ºÀ¸·Î ÇÏ¿© À̵éÀ» Á¶»çÈÄ
2ÀÏ, 1ÁÖ, 2ÁÖ, 3ÁÖ, 4ÁÖ ÈÄ¿¡ °¢°¢ 4µÎ¾¿ Èñ»ý½ÃÄÑ Åë¹ý¿¡ ÀÇÇØ ÀϺΠÁ¶Á÷ÆíÀº H-E Áß¿°»ö
°ú H´Ü¿°»öÀ» ½ÃÇàÇÏ¿© ±¤ÇÐÇö¹Ì°æÀ¸·Î ºñ±³ °üÂûÇÏ¿´°í ³ª¸ÓÁö Á¶Á÷ÆíÀº PA-ACH·Î ó
¸®ÇÑ ÈÄ, Çü±¤Çö¹Ì°æÀ¸·Î B-Odichroic mirror¿Í Y455 barrier filter¸¦ »ç¿ëÇÏ¿© °üÂûÇÑ °á°ú,
´ÙÀ½°ú °°Àº °á·ÐÀ» ¾ò¾ú´Ù.
1. ì¼ù»àÍàÍøà´Â ú·Àº ½ÉÇÏ°Ô º¯¼ºµÇ¾ú°í ¼¶À¯È­µÇ¾úÀ¸¸ç, àÍøà³» ÝÂÝôΨأÀº Àú·ùµÇ¾ú´Ù.
àÍøà°£ÀÇ °£°ÝÀº ³Ð¾îÁ³À¸¸ç, àÊøàÀÇ Å©±â¿Í ÇüÅ°¡ ¸Å¿ì ºÒ±ÔÄ¢ÇÏ°Ô À§ÃຯȭµÇ¾ú´Ù.
2. àÍøàá¬øàÀÇ ú·Àº ½ÉÇÏ°Ô ³óÃàµÇ¾ú°í ÀüÀ§µÇ¾úÀ¸¸ç ¸Å¿ì ºÒ±ÔÄ¢ÇÏ°Ô ÀÀÁýµÇ¾ú´Ù.
3.ì¼ù»àÍàÍøàÁ¶Á÷ÀÇ º¯È­´Â ½ÇÇè 2ÀÏÈĺÎÅÍ ³ªÅ¸³ª±â ½ÃÀÛÇÏ¿© ½ÇÇè 2ÁÖÈÄ¿¡ °¡Àå ½ÉÇÏ°Ô
³ªÅ¸³µÀ¸³ª, ½ÇÇè 4ÁÖÈÄ¿¡´Â °ÅÀÇ Á¤»óÀ¸·Î ȸº¹µÇ¾ú´Ù.
4. ì¼ù»àÍÀÇ àÍÓôηÀº ½ÇÇè 1ÁÖÈÄ¿¡ ½ÉÇÏ°Ô À§ÃàµÇ°í ¿¬¼Ó¼ºÀÌ Æı«µÇ¾úÀ¸³ª ½ÇÇè 3ÁÖÈÄ
¿¡´Â Àç»ýµÇ±â ½ÃÀÛÇÏ¿´´Ù.
#ÃÊ·Ï#
This study was designed to investigate the irradiation effects on the rat parotid gland,
applied to the head and neck region. For this experiment, twenty-four rats, feeded under
the even condition, were used as experimental animals. Twenty rats were used for
experimental group and the rest were assigned to the control group. The experimental
group was singly irradiated with 10 Gray through Cobalt-60 radiotherapy device, Picker
model 4M 60 (Field size; 12¡¿5 §¯, SSD; 50 §¯, Depth; 1 §¯).
The experimental animals of both group were sacrificed each four animals in 2 days,
1 week, 2 weeks, 3 weeks and 4 weeks after irradiation. The specimens were examined
through the light microscope using the H-I stain and H stain by routin procedure. The
other specimens were observed under the fluorescence microscope using the B-0
dichroic mirror and Y 455 barrier filter after PA-ACH stain.
The results of this study were obtained as follows,
1. The parotid acini were severely degenerated and the intraacinar spaces were
widened. Within the acini, retained secretory granules and increased fibrosis were
observed. Also the shape and the size of the acini showed very irregular atrophic
degenerations.
2. The nuclei showed severe pyknosis, displacement and irregular aggregated
appearance.
3. The tissue changes of the parotid acini were initiated after 2 days of irradiation
and most severely appeared at the second week of irradiation, but almost returned to
normal.
4. The salivary ducts of the parotid gland were severely atrophied, discontinued but
initiated to regenerated after 3 weeks of irradiation.

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