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X-¼± Á¶»ç·Î »ý±ä ÈòÁã ÆóÀå »óÇØÀÇ ÇüÅÂÇÐÀû º¯È­ : Captopril¿¡ ÀÇÇÑ ÆóÀå »óÇØÀÇ °æ°¨È¿°ú Histomorphologic Change of Radiation Pneumonitis in Rat Lungs : Captopril Reduces Rat Lung Injury Induced by Irradiation

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Abstract

¸ñ Àû : ¹æ»ç¼±Á¶»ç ÈÄ ¹ß»ýÇÏ´Â Æó¼Õ»óÀ» ÇüÅÂÇÐÀû Ãø¸é¿¡¼­ Æò°¡ÇÏ°í captoprilÀÇ ¹æ»ç
¼±Á¶»ç ÈÄ Æó¼Õ»óÀÇ °æ°¨È¿°ú°¡ ÀÖ´ÂÁö¸¦ È®ÀÎÇÏ°í captoprilÀÇ ¹æ»ç¼±¿¡ ÀÇÇÑ Æó¼Õ»óÀÇ ¿µ
Çâ¿¡¼­ TNF-¥á¿Í TGF-¥âÀÇ º¯È­¸¦ ¾Ë¾Æº¸°íÀÚ ÇÏ¿´´Ù.
´ë»ó ¹× ¹æ¹ý : Sprague-Dawley Á¾ ¼öÄÆ ÈòÁã 30¸¶¸®¸¦ °ñ¶ó ¹æ»ç¼±Á¶»ç¸¸ ÇÑ ±º, ¹æ»ç
¼±Á¶»ç ÈÄ captoprilÀ» Åõ¿©ÇÑ ±ºÀ¸·Î ³ª´©¾î ½ÇÇèÇÏ¿´´Ù. ¹æ»ç¼±Á¶»ç´Â 10 §í, 20 §í, 30 §í
¸¦ ¿ìÃø Æó¿¡ Á¶»çÇÏ¿´´Ù. ¹æ»ç¼± ´Üµ¶ Á¶»ç±ºÀº ¹æ»ç¼±Á¶»ç ÈÄ °¢°¢ 12 ½Ã°£, 11ÁÖ ÈÄ¿¡ µµ
»ìÇÏ°í ¹æ»ç¼±Á¶»ç ÈÄ captoprilÀ» Åõ¿©ÇÑ ±º(captopril 500 §·/L¸¦ Áõ·ù¼ö¿¡ Ÿ¼­ ¸ÔÀÓ)Àº
11ÁÖ(fibrotic period) ÈÄ¿¡ µµ»ìÇÏ¿© ±¤ÇÐÇö¹Ì°æ°ú ÀüÀÚÇö¹Ì°æÀ¸·Î °üÂûÇÏ¿´´Ù.
°á °ú : ¹æ»ç¼±Á¶»ç ÈÄ 12 ½Ã°£ ³»ÀÇ ½ÇÇ豺ÀÇ Æó´Â ºÎºÐÀûÀ¸·Î Æó½ÇÁúÀÇ ÇãÅ»°ú °æÈ­°¡
¹æ»ç¼± Á¶»ç·®ÀÌ ¸¹¾ÆÁú¼ö·Ï ±× Á¤µµ¿Í ¹üÀ§°¡ Áõ°¡ÇÏ¿´´Ù. ¹æ»ç¼±Á¶»ç ÈÄ 11ÁÖ¿¡´Â ¹æ»ç¼±
´Üµ¶ Á¶»ç±º¿¡¼­ Æó ¼¶À¯È­ÀÇ Á¤µµ¿Í ¹üÀ§°¡ ¹æ»ç¼± Á¶»ç·®ÀÌ ¸¹¾ÆÁú¼ö·Ï Áõ°¡ÇÏ¿´°í
captoprilÀ» ÇÔ²² »ç¿ëÇÑ ±º¿¡¼­ ¹æ»ç¼±Á¶»ç ´Üµ¶±º¿¡ ºñÇØ Æó ¼¶À¯È­ÀÇ °æ°¨È¿°ú°¡ ÇöÀúÇÏ
¿´´Ù. ¹æ»ç¼± ´Üµ¶±º¿¡¼­´Â ¹æ»ç¼±·®ÀÌ ¸¹¾ÆÁú¼ö·Ï ºñ¸¸¼¼Æ÷ÀÇ ¼ö´Â ±Þ°ÝÈ÷ Áõ°¡ÇÏ¿´À¸¸ç
captoprilÀ» »ç¿ëÇÑ ±ºÀÌ »ç¿ëÇÏÁö ¾ÊÀº ±º°ú ºñ±³ÇÏ¿© ºñ¸¸¼¼Æ÷ ¼öÀÇ Áõ°¡ Á¤µµ´Â ÇöÀúÈ÷
³·¾Ò°í ±³¿øÁú ħÂøÀÇ Á¤µµµµ ÇöÀúÈ÷ °¨¼ÒµÇ¾ú´Ù. TNF-¥á, TGF-¥â´Â ¹æ»ç¼±Á¶»ç Á÷ÈÄ(12
½Ã°£) ±º¿¡¼­´Â ¹æ»ç¼±·®ÀÌ Áõ°¡ÇÔ¿¡ µû¶ó ±× ¹ßÇöÀÌ Áõ°¡ÇÏ¿´À¸³ª ¹æ»ç¼±Á¶»ç ÈÄ 11ÁÖ±º¿¡
¼­´Â TGF-¥â´Â ¹æ»ç¼±·®ÀÌ ¸¹¾ÆÁü¿¡ µû¶ó ±× ¹ßÇöÀÌ Áõ°¡ÇÏ¿´À¸¸ç captopril Åõ¿©±º¿¡¼­´Â
±× ¹ßÇöÀÌ ´Ù¼Ò °¨¼ÒÇÏ¿´´Ù. CaptoprilÀ» »ç¿ëÇÑ ±º¿¡¼­´Â ±³¿øÁúÀÇ ¾çÀº Áõ°¡ÇÏ¿´À¸³ª ¹æ»ç
¼± ´Üµ¶±º¿¡ ºñÇØ ±³¿øÁúÀÇ ¾çÀÌ Àû¾ú°í Ç÷°ü ÁÖÀ§ ºñÈÄÀÇ Á¤µµ¿Í, ¸ð¼¼Ç÷°üÀÇ º¯È­ Á¤µµ,
masts cellÀÇ ¼ö¿Í Å»°ú¸³, ¼¶À¯¸ð¼¼Æ÷ÀÇ ¼öµµ Àû¾ú´Ù.
°á ·Ð : ¹æ»ç¼±Á¶»ç ÈÄ ¹æ»ç¼±Æó·Å¿¡¼­ CaptoprilÀÇ ¿µÇâÀº ¹æ»ç¼±¿¡ ÀÇÇÑ ºñ¸¸ ¼¼Æ÷ÀÇ Ãâ
ÇöÀ» ¾ïÁ¦½ÃÅ°°í ±³¿øÁúÀÇ Ä§ÂøÀ» °¨¼Ò½ÃÅ´À¸·Î½á ¹æ»ç¼±¿¡ ÀÇÇÑ ¼¶À¯È­¸¦ ¿¹¹æÇÒ °ÍÀ¸·Î
»ý°¢µÈ´Ù. TNF-¥á¿Í TGF-¥âÀÇ ¹ßÇöÀº ¹æ»ç¼±Á¶»ç ÈÄ Ãʱ⿡ Áõ°¡Çϸç TGF-¥â´Â ¹æ»ç¼±
Á¶»ç ÈÄ ¸¸¼º±â¿¡ ¹æ»ç¼±·®ÀÌ ¸¹¾ÆÁú¼ö·Ï ¹ßÇöÀÌ Áõ°¡ÇÏ´Â °ÍÀ¸·Î ÆǴܵǾú´Ù. º» ¿¬±¸ °á
°ú´Â captoprilÀÌ ¹æ»ç¼±Á¶»ç ÈÄ ¹ß»ýÇÏ´Â Æó¼Õ»óÀ» °¨¼Ò½ÃÅ°´Â ±âÀüÀ» ¹àÈ÷´Â ÇâÈÄ ¿¬±¸¿¡
Áß¿äÇÑ ÀÚ·á°¡ µÉ °ÍÀ¸·Î »ý°¢µÈ´Ù.

Purpose : To assess the histomorphologic changes in the rat lung injury induced by
radiation, to determine whether captopril reduces the rat lung injury and to evaluate
change in TNF-¥á and TGF-¥â in rat lung damage by radiation and captopril
Methods and material : Right lungs in male Sprague-Dawley rats were divided
irradiation alone (10, 20, 30 §í) or radiation (same dose with radiation alone group) with
captopril (500 §·/L). Radiation alone group were sacrificed at twelve hours and eleven
weeks after radiation and radiation with captopril group (captopril group) were sacrificed
at eleven weeks after radiation with captopril. We examined the light microscope and
electron microscopic features in the groups.
Materials and Methods: In radiation alone group, there were patch parenchymal
collapse and consolidation at twelve hours after radiation. The increase of radiation dose
shows more prominent the severity and broader the affected areas. Eleven weeks after
radiation, the severity and areas of fibrosis had increased in proportion to radiation dose
given in the radiation alone group. There was notable decrease of lung fibrosis in
captopril group than in radiation alone group. The number of mast cells rapidly
increased with increase of radiation dose in radiation alone group and the degree of
increase of mast cell number and severity of collagen accumulation more decreased in
captopril group than in radiation alone group. In radiation alone group, expression of
TNF-¥á and TGF-¥â increased according to increase of radiation dose at twelve hours
after radiation in both group. At eleven weeks after radiation, expression of TGF- ¥â
increased according to increase of radiation dose in radiation group but somewhat
decreased in captopril group. In the captopril group the collagen deposition increased but
less dense than those of radiation alone group. The severity of perivascular thickening,
capillary change, the number and degranulation of mast cells more decreased in the
captopril group than in the radiation alone group.
Conclusion : It is concluded that the effect of captopril in the rat lungs after radiation
was considered to be due to its effect on inhibition of mast cells and reduction of
collagen deposition, and captopril may be protect in lung damage after radiation. We
observed expression of TNF- ¥á and TGF-¥â increased at the early phase after
radiation and expression of TGF-¥â increased in proportion to increase of radiation dose
at the chronic phase after radiation. This results will contribute to future investigation
in reduction mechanism of captopril in lung damage after radiation

Å°¿öµå

¹æ»ç¼±Æó·Å; Captopril; ¹æ»ç¼±º¸È£Á¦; Radiation pneumonitis; Captopril; Radioprotector;

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