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ÈòÁã ħ»ùÀÇ ¹æ»ç¼±Á¶»ç½Ã Apoptosis¿¡ ´ëÇÑ Diltiazem°ú PentoxifyllineÀÇ È¿°ú The Effects of Diltiazem and Pentoxifylline on Apoptosis of Irradiated Rat Salivary Gland

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Abstract

¸ñ Àû : µÎ°æºÎ¿¡ ¹æ»ç¼± Á¶»ç¸¦ ¹Þ´Â °æ¿ì ´ëºÎºÐÀÇ È¯ÀÚ¿¡¼­ ±¸°­ °ÇÁ¶ÁõÀ» °Þ°Ô µÈ´Ù.
ÀÌ¿Í °°Àº ±¸°­ °ÇÁ¶ÁõÀº ħ»ù ¼¼Æ÷ÀÇ ¼Ò½Ç¿¡ ÀÇÇØ Ä§ÀÌ »ý¼ºµÇÁö ¾Ê°Å³ª Àû°Ô »ý¼ºµÇ±â ¶§
¹®ÀÌ´Ù. ħ»ù ¼¼Æ÷°¡ ¹æ»ç¼± Á¶»ç¿¡ ÀÇÇØ ¼Ò½ÇµÇ´Â ±âÀüÀº ħ»ù ¼¼Æ÷ÀÇ °£±â»ç¸Á(interphase
death)ȤÀº apoptosis¿¡ ÀÇÇÑ Á÷Á¢ ¼Õ»ó¿¡ ÀÇÇØ ¹ß»ýµÈ´Ù´Â °ÍÀÌ °¡Àå °¡´É¼º ÀÖ´Â ±âÀüÀ¸
·Î ¾Ë·ÁÁ® ÀÖ°í apoptosis´Â ¼¼Æ÷³»ÀÇ Ä®½·³óµµÀÇ Áõ°¡·Î ÀÎÇØ ÀϾ´Ù. µû¶ó¼­ º» ¿¬±¸´Â
ÈòÁã ħ»ùÀÇ ¹æ»ç¼±Á¶»ç¿¡¼­ Ä®½·Åë·Î Â÷´ÜÁ¦ÀÎ diltiazem°ú ¹æ»ç¼±ÀÇ ±Þ¼º¹ÝÀÀ¿¡ ÀÛ¿ëÇÏ°í
¼¼Æ÷³» Ä®½·³óµµ¸¦ °¨¼Ò½Ãų ¼ö ÀÖ´Â pentoxifyllineÀ» ¹æ»ç¼±Á¶»ç Àü¿¡ Åõ¿©ÇÏ¿© apoptosis
¹ß»ýÀÌ °¨¼ÒµÇ´Â Áö¸¦ ¾Ë¾Æº¸°íÀÚ ÇÏ¿´´Ù.
´ë»ó ¹× ¹æ¹ý : üÁß ¾à 200-250gÀÇ ÈòÁã 10¸¶¸®¸¦ ´ë»óÀ¸·Î ´ëÁ¶±º, ¹æ»ç¼±Á¶»ç ´Üµ¶±º,
¹æ»ç¼± Á¶»çÀü diltiazem ȤÀº pentoxifyllineÀ» Åõ¿©±º°ú µÎ ¾àÁ¦¸¦ µ¿½Ã Åõ¿©±ºÀ¸·Î ³ª´©¾ú
´Ù. ¹æ»ç¼± Á¶»ç´Â ħ»ùÀ» Æ÷ÇÔÇÏ´Â µÎ°æºÎ¿¡ 1600cGy¸¦ ´ÜÀÏ Á¶»çÇÏ°í diltiazemÀº ÁãÀÇ
üÁß §¸ ´ç 30§·À» ¹æ»ç¼±Á¶»ç 30ºÐÀü, pentoxifyllineÀº ÁãÀÇ Ã¼Áß §¸ ´ç 50§·À» ¹æ»ç¼±Á¶»ç
20ºÐÀü¿¡ º¹°­³» Åõ¿©ÇÏ¿´´Ù. ¹æ»ç¼±Á¶»ç ÈÄ 24½Ã°£¿¡ Á㸦 ȸ»ý½ÃÄÑ ÀÌÇϼ±°ú ¾ÇÇϼ±À» Á¦
°ÅÇÏ¿© hematoxylin-eosin ¿°»öÀ» ÇÑ ÈÄ 200¹èÀÇ ¹èÀ²¿¡¼­ ¹«ÀÛÀ§·Î 10-20°÷À» ¼±ÅÃÇÏ¿©
Çö¹Ì°æ½Ã¾ß´ç Àüü ¼¼Æ÷¼ö(T)¿¡ ´ëÇÑ apoptotic bodyÀÇ ¼ö(A)ÀÇ ¹éºÐÀ²(A/T¡¿100)À» ±¸ÇÏ
¿© °¢ ±ºÀ» ºñ±³ÇÏ¿´´Ù.
°á °ú : ÀÌÇϼ±¿¡¼­ ¹æ»ç¼±´Üµ¶, diltiazem, pentoxifylline ´Üµ¶ Åõ¿©±º°ú µÎ¾àÁ¦ÀÇ µ¿½Ã Åõ
¿©±º¿¡¼­ °üÂûµÈ apoptosis ¹éºÐÀ²Àº °¢°¢ 1.72%(8.35/486), 0.64%(2.9/453), 0.23%(1.2/516),
0.28%(1.1/399)ÀÌ¿´´Ù. ¹æ»ç¼±Á¶»ç ´Üµ¶±º¿¡ ºñÇØ ¾àÁ¦ Åõ¿©±º¿¡¼­ apoptotic bodyÀÇ ºóµµ´Â
Åë°èÀûÀ¸·Î ÀǹÌÀÖ´Â °¨¼Ò¸¦ º¸¿´´Ù(p<0.05). ¾ÇÇϼ±ÀÇ Àå¾×¼º ¼¼Æ÷¿¡¼­ ¹æ»ç¼±Á¶»ç´Üµ¶±º,
diltiazem, pentoxifylline ´Üµ¶ Åõ¿©±º°ú µÎ ¾àÁ¦ÀÇ º´ÇÕ Åõ¿©±º¿¡¼­ °üÂûµÈ apoptosis ¹éºÐ
À²Àº °¢°¢ 1.94%(l1/567), 0.34%(1.9/554), 0.28%(1.8/637), 0.22%(1.3/601)À̾ú°í ¹æ»ç¼±Á¶»ç
´Üµ¶±º¿¡ ºñÇØ ¾àÁ¦ Åõ¿©±º¿¡¼­ apoptotic bodyÀÇ ºóµµ´Â Åë°èÀûÀ¸·Î ÀÇ¹Ì ÀÖ´Â °¨¼Ò¸¦ º¸
¿´´Ù(p<0.05). Á¡¾×¼º ¼¼Æ÷¿¡¼­ apoptosis ¹éºÐÀ²Àº °¢ ±º¿¡¼­ 0.92%(5.1/552), 0.41%(2.5/
612), 0.29%(1.3/455), 0.18%(1.0/562)¿´´Ù. ¹æ»ç¼±Á¶»ç ´Üµ¶±º¿¡ ºñÇØ ¾àÁ¦ Åõ¿©±º¿¡¼­
apoptotic bodyÀÇ ¹ß»ý ºóµµ´Â Åë°èÀûÀ¸·Î ÀÇ¹Ì ÀÖ´Â Â÷À̸¦ º¸ÀÌÁö ¾Ê¾Ò´Ù. ¾ÇÇϼ±ÀÇ Àå¾×
¼º°ú Á¡¾×¼º ¼¼Æ÷¿¡¼­ ¹æ»ç¼± ´Üµ¶ Åõ¿©±ºÀÇ °æ¿ì apoptotic body ¹ß»ýÀÇ ¹éºÐÀ²Àº °¢°¢
1.94% (l1/567)¿Í 0.92%(5.1/552)·Î½á µÎ ¼¼Æ÷°£¿¡ apoptotic bodyÀÇ ¹ß»ý¿¡ Åë°èÀûÀÎ Â÷ÀÌ°¡
¾ø¾ú´Ù. ÀÌÇϼ±°ú ¾ÇÇϼ± ¸ðµÎ¿¡¼­ ¾àÁ¦ Åõ¿© ±ºµé°£ÀÇ apoptotic body ¹ß»ýÀº Åë°èÀûÀ¸·Î
ÀÇ¹Ì ÀÖ´Â Â÷ÀÌ°¡ ¾ø¾ú°í ƯÈ÷ ¾àÁ¦ÀÇ º´ÇÕ Åõ¿©±ºÀÌ ´ÜÀÏ ¾àÁ¦ Åõ¿©±ºº¸´Ù ³·Àº apoptotic
body ¹ß»ýºóµµ¸¦ º¸ÀÌ°í ÀÖÀ¸³ª Åë°èÀûÀ¸·Î ÀÇ¹Ì ÀÖ´Â Â÷ÀÌ´Â ¾ø¾ú´Ù.
°á ·Ð : º» ¿¬±¸ °á°ú·Î ħ»ùÀÇ ¹æ»ç¼± Á¶»ç¿¡¼­ Àå¾×¼º ¼¼Æ÷¿¡¼­ ¹ß»ýµÇ´Â apoptosis´Â
pentoxifylline ȤÀº diltiazemÀÇ Åõ¿©¿¡ ÀÇÇØ È¿°úÀûÀ¸·Î °¨¼ÒµÇ´Â °ÍÀÌ °üÂûµÇ¾ú´Ù. µû¶ó¼­
ÇâÈÄ ÀÌµé ¾àÁ¦¿¡ ÀÇÇÑ apoptosisÀÇ °¨¼Ò°¡ ħ»ùÀÇ ¸¸¼ºº¯È­¿¡µµ ¿µÇâÀ» ¹ÌÄ¡´ÂÁö¿¡ ´ëÇÑ
¿¬±¸°¡ ÀÌ·ç¾î Á®¾ß°Ú´Ù.

Purpose : Xerostomia is a complication met by almost all patients who have
radiotherapy for cancers of head and neck. Many studies for prevention of xerostomia
will be necessary. Radiation-induced acute response of salivary glands has been defined
as interphase death of apoptosis. Increased intracellular calcium level have an important
role in radiation-induced apoptosis. Calcium channel blocker may prevent
radiation-induced apoptosis of salivary glands. This study was designed to evaluate the
effectiveness of diltiazem known as calcium channel blocker and pentoxifylline with
inhibition of inflammatory response on the apoptosis as an acute response of radiation in
rat salivary glands.
Materials and Methods : Sprague-Dawley rats with about body weight 200-250g were
divided into 5 study groups : control. radiation alone, diltiazem with radiation,
pentoxifylline with radiation, and diltiazem and pentoxifylline with radiation. The
diltiazem and pentoxifylline were injected intraperitoneally 20 §·/§¸ and 50 §·/§¸, 30 and
20 minute before irradiation, respectively. Irradiation was given with a 4 MV linear
accelerator. The 1600 cGy of radiation was delivered in a sin91e fraction through a
single anterior portal encompassing the entire neck. After 24 h of irradiation, rats were
sacrificed and carotid and submandibular glands were removed and stained with
hematoxylin and eosin. The quantification of apoptosis was performed by microscopic
examination of stained tissue sections at a magnification of 200X and the percentage of
apoptotic cell was calculated.
Results : In carotid stands, the percentage of apoptosis by radiation alone. diltiazem
with radiation, pentoxifylline with radiation. and diltiazem and pentoxifylline with
radiation were 1.72% (8.35/486). 0.64% (2.9/453). 0.23% (1.2/516), and 0.28% (1.1/399),
respectively. The apoptosis was markedly reduced in the grouts receiving drugs
compared with groups receivinge, radiation alone (¥â<0.05). In serous cell of
submandibular glands, the percentages of apoptosis of radiation alone, diltiazem with
radiation, pentoxifylline with radiation, and diltiazem and pentoxifylline with radiation
were 1.94% (l1/567). 0.34% (1.9/554), 0.28% (1.8/637), and 0.22% (1.3/601), respectively.
In the mucus cell of submandibular glands, the percentages of apoptosis were 0.92%
(5.1/552), 0.41% (2.5/612), 0.29% (1.3/455), and 0.18% (1.0/562), respectively. The
apoptosis was markedly reduced in the serous glands (p<0.05), but there was no
difference in development of apoptosis in each group of mucus gland.
Conclusion : These results suggest that radiation-induced apoptosis of serous cells of
salivary stands may be decreased by diltiazem and pentoxifylline administration.

Å°¿öµå

Salivary gland; Radiation-induced apoptosis; Diltiazem; Pentoxifylline; Xerostomia;

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