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ÈòÁãÀÇ À§Á¡¸·¿¡ Paclitaxel (Taxol)°ú ¹æ»ç¼±Á¶»çÀÇ È¿°ú Effect of the Paclitaxel and Radiation on the Gastric Mucosa of the Rat

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1ÀÌ°æÀÚ/1Kyung ja Lee 2±¸Çý¼ö/2 Hea soo Koo

Abstract

¸ñÀû : Paclitaxel (Taxol)Àº ¹Ì¼Ò°üÀÇ ÁýÇÕÀ» ÃËÁø½ÃÅ°°í ºÐÇظ¦ ¹æÁöÇÏ´Â ¹Ì¼Ò°ü ¾ïÁ¦Á¦·Î¼­ ÀÌ
ÀÛ¿ëÀº ¼¼Æ÷ÁÖ±âÁß ¹æ»ç¼±¿¡ ¿¹¹ÎÇÑ G2/M ½Ã±â¿¡ ÀϾ±â ¶§¹®¿¡ ¹æ»ç¼±Á¶»ç¿Í º´¿ëÇÒ °æ¿ì ¹æ
»ç¼±°¨ÀÛÁ¦ °¡´É¼ºÀÌ ÀÖ´Ù. Paclitaxel°ú ¹æ»ç¼±Á¶»ç¸¦ º´¿ëÇÏ¿© ÈòÁãÀÇ À§ Á¡¸·¿¡¼­ paclitaxelÀÌ
¹æ»ç¼±ÀÇ È¿°ú¿¡ ¹ÌÄ¡´Â ¿µÇâÀº ÆľÇÇϱâ À§ÇÏ¿© º» ¿¬±¸¸¦ ½ÃÇàÇÏ¿´´Ù.
´ë»ó ¹× ¹æ¹ý : ½ÇÇ豺Àº paclitaxel ´Üµ¶±º, ¹æ»ç¼±Á¶»ç ´Üµ¶±º ¹× paclitaxel°ú ¹æ»ç¼±Á¶»ç º´¿ë
±ºÀÇ ¼¼ ±ºÀ¸·Î ºÐ·ùÇÏ¿© paclitaxel ´Üµ¶±ºÀº paclitaxel (10 §·/§¸)À» º¹°­³» 1ȸ ÁÖÀÔÇÏ¿´°í, ¹æ
»çÁ¶»ç ´Üµ¶±ºÀº 8 Gy¸¦ Àü º¹ºÎ¿¡ ´ÜÀÏ Á¶»çÇÏ¿´À¸¸ç, paclitaxel°ú ¹æ»ç¼±Á¶»ç º´¿ë±ºÀº
paclitaxel (10 §·/§¸)À» º¹°­³» ÁÖÀÔ ÈÄ 24½Ã°£¿¡ ¹æ»ç¼±Á¶»ç ´Üµ¶±º°ú µ¿ÀÏÇÑ ¹æ¹ýÀ¸·Î ¹æ»ç¼±
Á¶»çÇÏ¿´´Ù. ½ÇÇè ¿Ï·á ÈÄ À§ Á¡¸· ³» À¯»çºÐ¿­ ¼ö, apoptosis¿Í ±âŸ Á¡¸·ÀÇ º¯È­¸¦ ½Ã°£º°·Î(6,
24½Ã°£, 3ÀÏ ¹× 5ÀÏ) ºñ±³ °üÂûÇÏ¿´´Ù.
°á°ú : paclitaxel ÁÖÀÔ ÈÄ À§ Á¡¸· ³» À¯»çºÐ¿­Àº Áõ°¡ÇÏÁö ¾Ê¾Ò°í apoptosis´Â 6½Ã°£¿¡ 5.75£¥¿´
°í 3ÀϱîÁö ºñ½ÁÇÏ°Ô Áö¼ÓµÇ¾ú´Ù. paclitaxel ÁÖÀÔ ÈÄ °æ¹ÌÇÑ À§¼±ÀÇ È®ÀåÀÌ 24½Ã°£¿¡ °üÂûµÇ¾ú°í,
¼¼Æ÷ÀÇ ºñÁ¤ÇüÀÌ 24½Ã°£°ú 3ÀÏ¿¡ º¸¿´À¸³ª 5ÀÏ¿¡´Â Á¤»óÀ¸·Î ȸº¹µÇ¾ú´Ù. ¹æ»ç¼±Á¶»ç ´Üµ¶±º¿¡¼­
apoptosis´Â 6½Ã°£¿¡ 6.0£¥·Î °¡Àå ¸¹¾ÒÀ¸¸ç 24½Ã°£¿¡ 1.23£¥·Î °¨¼ÒµÇ¾ú°í 5ÀϱîÁö Áö¼ÓµÇ¾ú´Ù.
À§¼±ÀÇ È®Àå°ú ¼¼Æ÷ÀÇ ºñÁ¤ÇüÀº ¹æ»ç¼±Á¶»ç ÈÄ 6½Ã°£ºÎÅÍ 5ÀϱîÁö °è¼ÓÇؼ­ °æ¹ÌÇÏ°Ô º¸¿´´Ù.
paclitaxel°ú ¹æ»ç¼±Á¶»ç º´¿ë±ºÀº apoptosis°¡ 6, 24½Ã°£, 3ÀÏ ¹× 5ÀÏ¿¡ °¢°¢ 5.5, 4.5, 4.0, 4.0£¥·Î
¹æ»ç¼±Á¶»ç ´Üµ¶±º¿¡ ºñÇÏ¿© 24½Ã°£ºÎÅÍ ¸¹¾ÆÁ³°í 3ÀÏ¿¡´Â Åë°èÇÐÀûÀ¸·Î À¯ÀÇÇÑ Â÷ÀÌ°¡ ÀÖ¾ú´Ù.
À§¼±ÀÇ È®Àå°ú ¼¼Æ÷ÀÇ ºñÁ¤ÇüÀº paclitaxel°ú ¹æ»ç¼±Á¶»ç º´¿ë±º¿¡¼­ ¹æ»ç¼±Á¶»ç ´Üµ¶±º¿¡ ºñÇÏ¿©
Áõ°¡µÇÁö ¾Ê¾Ò´Ù.
°á·Ð : ÈòÁãÀÇ À§ Á¡¸·Àº paclitaxel ÁÖÀÔ ÈÄ 24½Ã°£¿¡ ¹æ»ç¼±Á¶»ç¸¦ ½ÃÇàÇÑ °á°ú apoptosis¸¦ Á¾
¸»Á¡À¸·Î º¼ ¶§ paclitaxelÀÇ Ã·°¡È¿°ú¸¸À» º¸¿© ÁÖ¾ú´Ù.

Purpose : Paclitaxel is a chemotherapeutic agent with potent microtubule stabilizing activity
that arrests cells in G2-m phase. Because G2 and M are the most
radiosensitive phase of the cell cycle, paclitaxel has potential role as a cell-cycle specific
radiosensitizer. This study was performed to see the effects of paclitaxel on the
radiation-induced damage of gastric mucosa of the rat.
Materials and Methods : The rats were divided into the three groups i.e., paclitaxel alone
group, radiation alone group and, a combination of paclitaxel and radiation in combined group.
A single intraperitoneal infusion of paclitaxel (10§·/§¸) was done in paclitaxel alone group. In
radiation alone group, a single fraction of irradiation (8 Gy, x-ray) to the whole abdomen and,
a combination of a single fraction of irradiation (8 Gy, x-ray) to the whole abdomen was
given 24 hrs after paclitaxel infusion in combined group of paclitaxel and radiation. The
incidence of mitosis and apoptosis as sell as histologic changes of the gastric mucosa were
evaluated at 6 hrs, 24 hrs, 3 days and 5 days after treatment.
Results : The number of the mitosis was not increased by paclitaxel infusion. The incidence
of the spoptosis was similar from 6 hrs to 3 days after paclitaxel infusion and was decreased
at 5 days. Paclitaxel induced minimal glandular dilatation and cellular atypia of gastric mucosa
at 24 hrs and 3 days. In irradiation group, the incidence of apoptosis was 6.0£¥ in 6 hrs and
1.25£¥ in 24 hrs after irradiation and minimal glandular dilatation and cellular atypia were
noted throughout the experimental period. The incidence of apoptosis in the combined group
of paclitaxel and irradiation (4.5£¥) was significantly higher than irradiation alone group (1.25
£¥) at 3 days (p£¼0.05).
Conclusion : Paclitaxel had no effect on mitotic arrest in gastric mucosa of the rat. Increased
number of apoptosis in combined paclitaxel and irradiation group suggested the additive
effects of paclitaxel on irradiation.

Å°¿öµå

paclitaxel; ¹æ»ç¼±Á¶»ç; À§ Á¡¸·; Apoptosis; Paclitaxel; Irradiation; Mitotic arrest; Apoptosis; Stomach;

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