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BleomycinÅõ¿©ÈÄ ¹é¼­ Æó¿¡ ¹ß»ýÇÑ Æó°£Áú ¼¶À¯ÁõÀÇ ÀüÀÚÇö¹Ì °æÀû ¿¬±¸ An Ultrastructural Study of Bleomycin-Induced Interstitial Pulmonary Fibrosis in the Rat

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Abstract

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BleomycinÀÇ ±â°ü³» Åõ¿©·Î ÀÎÇÑ ÆóÀÇ °£Áú ¼¶À¯È­ÀÇ ±âÀüÀ» ÀÌÇØÇÏ°íÀÚ Ã¼Áß 200¡­250
g µÇ´Â Sprague-DawleyÁ¾ ¹é ¼­ 40¸¶¸® ¿¡ bleomycin 1.5 unit¸¦ ±â°ü³»¿¡ ÁÖÀÔÇÑ µÚ 1, 2,
4, 6 ¹× 8ÁÖÈÄ¿¡ µµ»ìÇÏ°í ±¤ÇÐÇö¹Ì°æ ¹× ÀüÀÚÇö¹Ì°æÀûÀ¸·Î °Ë»öÇÏ¿© ´ÙÀ½°ú °°Àº ¼ºÀûÀ»
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±¤ÇÐ Çö¹Ì°æÀû ¼Ò°ßÀ¸·Î´Â, bleomycin ÁÖÀÔÈÄ 1¡­2ÁÖ¿¡ Æó°£Áú°ú ÆóÆ÷³»¿¡ ±Þ¼º¿°Áõ ¼¼Æ÷
ÀÇ Ä§À±°ú ºÎÁ¾ÀÌ º¸¿´°í ¥±Çü ÆóÆ÷»óÇǼ¼Æ÷ÀÇ Áõ½Ä ¼Ò°ßµµ °üÂûµÇ¾ú´Ù. 4¡­6ÁÖ°¡ Áö³ª¸é¼­
±Þ¼º¿°Áõ¼¼Æ÷ ¹× ºÎÁ¾Àº Á¡Â÷ °¨¼ÒÇÏ°í Æó°£Áú³»¿¡´Â ±³¿øÁúÀÇ Ä§Âø°ú ÇÔ²² ¼¶À¯È­ ¼Ò°ßÀÌ
°üÂûµÇ¾úÀ¸¸ç 8ÁÖ°¡ °æ°úÇϸ鼭 Æó°£Áú ³»¿¡´Â ÁÖ·Î ¼¶À¯¼º ºñÈÄ°¡ °üÂûµÇ¾ú´Ù.
Åõ°ú ¹× ÁÖ»çÀüÀÚÇö¹Ì°æÀû ¼Ò°ßÀ¸·Î´Â, bleomycin ÁÖÀÔÈÄ Ãʱ⿡´Â ¥±Çü ÆóÆ÷»óÇǼ¼Æ÷ÀÇ
¼Õ»ó ¹× lamella¼ÒüÀÇ ¼öÀûÀÎ Áõ°¡¿Í ´Ù¾çÇÑ ÇüÅ°¡ °üÂûµÇ¾ú°í Èı⿡´Â Æó°£Áú³»¿¡ ¼¶À¯
¾Æ¼¼Æ÷ÀÇ Áõ½Ä°ú ±³¿øÁúÀÇ Ä§ÂøÀ¸·Î Æó°£ÁúÀÇ ¼¶À¯È­·Î ÀÎÇÑ ºñÈĸ¦ °üÂûÇÒ ¼ö ÀÖ¾ú´Ù.
ÀÌ»óÀÇ ¼ºÀûÀ» Á¾ÇÕÇÏ¿© bleomycinÀÇ ±â°ü³» Åõ¿©·Î ÀÎÇÑ Æó°£Áú ¼¶À¯È­´Â Ãʱ⿡ ±Þ¼º
¿°Áõ¼¼Æ÷ÀÇ Ä§À±°ú ÆóÆ÷»óÇÇÀÇ ¼Õ»óÀÌ ½Ã°£ÀÌ °æ°úÇÔ¿¡ µû¶ó Æó°£ÁúÀÇ ¸¸¼º¿°Áõ¼¼Æ÷ÀÇ Ä§À±
°ú ¼¶À¯¾Æ¼¼Æ÷ Áõ½Ä ¹× ±³¿øÁúÀÇ Ä§ÂøÀ¸·Î ÁøÇàµÇ¸é¼­ Æó°£ÁúÀÇ ¼¶À¯È­°¡ ÀϾ´Â °ÍÀ¸·Î
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#ÃÊ·Ï#
This study was carried out to investigate the mechanisms of interstitial pulmonary
fibrosis of rats after the intratracheal administration of bleomycin.
Both lungs after bleomycin injection were examined by light and electron microscopy.
The results are as follows:
Light microscopically, 1 or 2 weeks after bleomycin injection acute and chronic
inflammatory infiltrates and edema in the interstitium and alveolar spaces were
observed. Proliferation of alveolar type ¥± pneumocytes was also found at 4 to 6 weeks
after bleomycin injection, chronic inflammatory infiltrates with interstitial fibrous
thickening were noted.
Electron microscopically, the number of type ¥± pneumocytes and irregular lamellar
bodies were increased and blunted microvilli were noted at 2 weeks. 4 to 8 weeks,
proliferation of fibroblasts with deposition of abundant collagen fibrils in the thickened
interstitium revealing irregular or collapsed alveolar spaces were observed.
Based on these findings, it can be concluded that bleomycin-induced interstitial
pulmonary fibrosis is considered to Pass from an early acute inflammation of the
interstitium and alveolar spaces to an interstitial fibroblast proliferation and collagen
deposition to the length of the period after injection.

Å°¿öµå

Interstitial pulmonary fibrosis; Ultrastructure; Bleomycin;

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