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ÁãÀÇ Å¸¾×¼± ¹æ»ç¼± Á¶»ç ÈÄ ¸¸¼º¹ÝÀÀ¿¡ Pentoxifylline°ú DiltiazemÀÌ ¹ÌÄ¡´Â ¿µÇâ Modification of Late Radiation Response of Rat Salivary Glands by Pentoxifylline and Diltiazem

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Abstract

¸ñ Àû : µÎ°æºÎ¾Ï ȯÀÚµéÀº ¹æ»ç¼±Á¶»ç ÈÄ ºÎÀÛ¿ëÀ¸·Î Ÿ¾×¼±ÀÇ ±â´ÉºÎÀüÀÎ ±¸°­°ÇÁ¶ÁõÀÌ
ÈçÈ÷ À¯¹ßµÇ¾î Ä¡·á ÈÄ È¸º¹ÀÌ ´Ê¾îÁö°í »îÀÇ ÁúÀÌ ÀúÇϵȴÙ. ¹æ»ç¼±Á¶»ç¿Í ÇÔ²² Ç÷·ù°³¼±
Á¦·Î ¾Ë·ÁÁ® ÀÖ´Â pentoxifylline (PTX)°ú Ä®½· Åë·ÎÂ÷´ÜÁ¦·Î ¾Ë·ÁÁ® ÀÖ´Â diltiazem (DTZ)
À» ´Üµ¶ ¶Ç´Â º´ÇÕÀ¸·Î Åõ¿©ÇÑ ÈÄ Å¸¾×¼±ÀÇ ¸¸¼ºº¯È­¸¦ ºÐ¼®ÇÏ¿© ÀÌ ¾àÁ¦µéÀÇ ¹æ»ç¼±¼Õ»ó
¾ïÁ¦ °¡´É¼ºÀ» ºÐ¼®ÇØ º¸°íÀÚ ÇÏ¿´´Ù.
´ë»ó ¹× ¹æ¹ý : Sprague-Dawley Áã 16¸¶¸®¸¦ ³× ±º Áï, 1) ¹æ»ç¼±Á¶»ç ´Üµ¶±º, 2) ¹æ»ç¼±
Á¶»ç¿Í PTX Åõ¿©±º, 3) ¹æ»ç¼±Á¶»ç¿Í DTZ Åõ¿©±º, 4) ¹æ»ç¼±Á¶»ç¿Í PTX, DTZÀÇ º´ÇÕÅõ
¿©±ºÀ¸·Î ºÐ·ùÇÏ¿´´Ù. 4 MV ¼±Çü°¡¼Ó±â¸¦ ÀÌ¿ëÇÏ¿© 16§í ÀÏȸ·Î Ÿ¾×¼± ºÎÀ§¿¡ ¹æ»ç¼±Á¶»ç
¸¦ ½ÃÇàÇÏ¿´´Ù. PTXÀº ¹æ»ç¼±Á¶»ç 20ºÐÀü¿¡ §¸´ç 50 §·À», DTZÀº ¹æ»ç¼±Á¶»ç 30ºÐÀü¿¡ §¸
´ç 20 §·À» º¹°­³»·Î °¢°¢ Åõ¿©ÇÏ¿´´Ù. ¹æ»ç¼±Á¶»ç ÈÄ 10ÁÖ¿Í 16ÁÖ ÈÄ¿¡ Ÿ¾×¼±À» ÀýÁ¦ÇÏ¿©
H&E¿°»öÀ» ÇÏ¿© º´¸®ÇÐÀû ¼Ò°ßÀ» °üÂûÇÏ¿´°í ¸¸¼ºº¯È­ÀÇ °´°üÀû ÁöÇ¥ÀÎ ¼¼Æ÷Áú ³» °øÆ÷
Çü¼ºÀÇ Á¤µµ¸¦ ¹éºÐÀ²·Î ÃøÁ¤ÇÏ¿© °¢ ±º°£ÀÇ Æò±Õ°ªÀ» ºñ±³ÇÏ¿© Åë°èÀûÀÎ À¯ÀǼºÀ»
X2-°Ë»ç¿¡ ÀÇÇØ È®ÀÎÇÏ¿´´Ù.
°á °ú : ¹æ»ç¼±Á¶»ç 10ÁÖ ÈÄ Å¸¾×¼±ÀÇ ¼±¹æ¼¼Æ÷Áú ³»¿¡¼­ ´Ù¼öÀÇ °øÆ÷Çü¼ºÀÌ °üÂûµÇ¾úÀ¸
¸ç ¹æ»ç¼±Á¶»ç¿Í PTX Åõ¿©±º, ¶Ç´Â PTX°ú DTZ º´ÇÕÅõ¿©±º¿¡¼­´Â ÀÌµé ¼¼Æ÷Áú ³» °øÆ÷Çü
¼ºÀÌ Åë°èÀûÀ¸·Î ÀǹÌÀÖ°Ô °¨¼ÒÇÏ¿´´Ù(p value, 0.001). ±×·¯³ª DTZ Åõ¿©±º¿¡¼­´Â ¼¼Æ÷Áú
³» °øÆ÷Çü¼º Á¤µµ°¡ ¹æ»ç¼±Á¶»ç ´Üµ¶±º¿¡ ºñÇØ Åë°èÀûÀ¸·Î ÀǹÌÀÖ°Ô °¨¼ÒµÇÁö ¾Ê¾Ò´Ù(p
value, >0.05). ¹æ»ç¼±Á¶»ç ÈÄ 16ÁÖ¿¡ °üÂûÇÑ ½ÇÇ豺µé¿¡¼­µµ ¼±¹æ¼¼Æ÷Áú ³» °øÆ÷Çü¼ºÀÇ Â÷
ÀÌ°¡ 10ÁÖ±ºµé°ú °¢±â À¯»çÇÑ ¼Ò°ßÀ» º¸¿´À¸¸ç 10ÁÖ¿Í ´Ù¸¥ Á¡Àº ¼±¹æ¼¼Æ÷ÀÇ Àüü ¼ö°¡ °¨
¼ÒµÈ °Í°ú °£Áú ³» ¼¶À¯È­ÀÇ Áõ°¡¿´´Ù.
°á ·Ð : ¹æ»ç¼±Á¶»ç¸¦ ¹ÞÀº ÁãÀÇ Å¸¾×¼±¿¡¼­ PTX Åõ¿©, ȤÀº PTX°ú DTZ º´ÇÕ Åõ¿© °á
°ú ¸¸¼º ¼Õ»óÀÌ °¨¼ÒµÇ¾úÀ½À» °üÂûÇÏ¿´°í ÀÌ·Î ¹Ì·ç¾î º¸¾Æ PTXÀÌ ¹æ»ç¼±Á¶»ç ÈÄ ¹ß»ýÇÏ
´Â ±¸°­°ÇÁ¶ÁõÀ» ¿¹¹æÇÏ´Â È¿°úÀûÀÎ ¾àÁ¦°¡ µÉ ¼ö ÀÖÀ¸¸®¶ó »ý°¢ÇÑ´Ù.

Purpose : To elucidate the effects of pentoxifylline and diltiazem on the late response
of the salivary glands of the rat after irradiation.
Materials and Methods : Sixteen Sprague-Dawley rats were divided into 4 groups :
(a) irradiation alone (b) irradiation with pentixifylline (PTX) (c) irradiation with diltiazem
(DTZ) (d) irradiation with both PTX and DTZ. Irradiation was given in a single fraction
of 16 §í using 4 MV photon energy through an anterior port encompassing the left side
of the salivary gland leaving the right side of salivary gland as a control. PTX, 20 §·/
§¸ and/or DTZ, 50 §·/§¸ were infused intraperitoneally before irradiation. Two rats from
each group were sacrificed on the l0th week and the rest was sacrificed on the 16th
week after irradiation. Histopathologic examinations were undertaken for each section
and the proportion of vacuolated cells out of the total number of cells under light
microscopic fields was calculated. The statistical significance in the difference of the
proportion of the vacuolated cells among the experimental groups was evaluated by a
x2-test.
Results : Irradiated salivary glands of the l0th week group revealed markedly
increased number of vacuolated cells compared to those of unirradiated control. The
proportion of vacuolated cells was significantly reduced in both the PTX group (p
value=0.001) and the combined PTX and DTZ group compared to those of irradiation
alone group. The DTZ alone group did not reveal the significant reduction of vacuolated
cells compared to those of irradiation alone group (p value, >0.05). The 16th week
groups revealed similar findings to those of the l0th week group, but the degree of
chronic inflammatory cell infiltrates and interstitial fibrosis was increased and the
number of acinar cells was reduced compared to those of the l0th week group.
Conclusion : PTX significantly reduced the late radiation response of salivary glands,
but DTZ did not reduce the same degree as PTX did. Taking the positive results of
this study into consideration, it seems reasonable to apply PTX into the clinical trial for
the head and neck irradiation to reduce the late radiation sequelae of salivary glands in
the near future. At the same time the further experiment to clarify the subcellular
mechanisms involved in PTX should be preceded.

Å°¿öµå

Ÿ¾×¼±; Pentoxifylline; Diltiazem; ¹æ»ç¼±Á¶»ç; ¸¸¼º¹ÝÀÀ; Salivary Glands; Pentoxifylline; Diltiazem; Irradiation; Late radiation response;

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