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LIGHT MICROSCOPE AND IMMUNOHISTOCHEMICAL STUDY FOR WOUND HEALING MECHANISM OF RAT SOFT TISSUE

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Abstract

°á·Ð
â»ó Ä¡À¯½Ã ÀϾ´Â ÇǺΠÁ¶Á÷ÀÇ º¯È­¸¦ °üÂûÇϱâ À§ÇÏ¿© ¹é¼­µî ºÎÀ§ÀÇ ÅÐÀ» Á¦°ÅÇÑ
ÈÄ 15¡¿8§®ÀÇ Ç¥ÁØ Å¸¿øÇüÀÇ ÇǺΠÀüÃþÀ» Æ÷ÇÔÇÑ °á¼ÕºÎ¸¦ Çü¼ºÇÏ°í 3, 7, 15, 21ÀÏ ¹× 30ÀÏ
°¿¡ Èñ»ýÇÑ ÈÄ Ã¤µæÇÑ Ç¥º»À» Åë¹ý¿¡ µû¶ó ó¸®ÇÏ¿© 4§­ ÆĶóÇÉ ÀýÆíÀ» Á¦ÀÛÇÏ°í, H£¦
E(Hematoxylin£¦Eosin) ¿°»ö, MT(Masson's Trichrome) ¿°»ö ¹× PCNA¿Í ¥á-SMA¸¦ ÀÌ
¿ëÇÑ ¸é¿ªÁ¶Á÷È­ÇÐÀû ¿¬±¸¸¦ ½ÃÇàÇÏ¿© ´ÙÀ½°ú °°Àº °á°ú¸¦ ¾ò¾ú´Ù.
1. ½ÇÇè 3ÀÏ Â°¿¡¼­ ½ÉÇÑ ºÎÁ¾°ú ¿°Áõ¼¼Æ÷ ħÀ±»óÀÇ ±Þ¼º ¿°Áõ¹ÝÀÀÀ» º¸¿´À¸¸ç, ½ÇÇè 7ÀÏ
°ºÎÅÍ ±³¿ø¼¶À¯¿Í Ç÷°üÁõ½ÄÀÌ ½ÃÀÛµÊÀ» ¾Ë ¼ö ÀÖ¾ú°í, ½ÇÇè 15ÀÏ Â°¿¡ ±³¿ø¼¶À¯ Çü¼ºÀÌ ´õ
¿í Áõ°¡µÇ¾úÀ¸¸ç, °íµµÀÇ ½Å»ý Ç÷°ü Áõ½ÄÀÌ °üÂûµÇ¾ú´Ù.
2. ½ÇÇè 21ÀÏ Â°¿¡¼­ ±Þ¼º ¿°Áõ¹ÝÀÀÀÌ ¿ÏÀüÈ÷ ¼Ò½ÇµÇ°í ±³¿ø¼¶À¯ Çü¼ºÀÌ Áõ°¡µÇ¾úÀ¸¸ç, ÀÌ
¶§ºÎÅÍ »óÇÇ ¼¼Æ÷ÀÇ Àç»ýÀÌ °üÂûµÇ¾ú´Ù ½ÇÇè 30ÀÏ Â°¿¡¼­ »óÇÇÀÇ Àç»ýÀÌ Á¤»ó°ú À¯»çÇÏ¿´
´Ù.
3. PCNAÀÇ ¹ßÇö¿¡ À־ Á¤»ó¿¡¼­´Â »óÇǼ¼Æ÷ÃþÀÇ ±âÀúºÎ¿Í ¸ð±Ù À§ÀÇ »óÇǼ¼Æ÷¿¡¼­
°üÂûµÇ¾úÀ¸³ª, ½ÇÇ豺¿¡¼­´Â »óÇǼ¼Æ÷ÀÇ Àç»ý°ú ÇÔ²² ±âÀú¼¼Æ÷Ãþ°ú ¸ð±Ù ÁÖÀ§ÀÇ ¼¼Æ÷¿¡¼­
PCNAÀÇ ¹ßÇöÀÌ Áõ°¡µÇ¾ú´Ù.
4. ¥á-SMAÀÇ ¹ßÇöÀ¸·Î °üÂûÇÑ Ç÷°üÁõ½ÄÀº ½ÇÇè 15ÀÏ Â°¿¡¼­ Á¦ÀÏ ½ÉÇÏ¿´°í ½ÇÇè±â°£ÀÌ
°æ°úÇÔ¿¡ µû¶ó ´Ù¼Ò °¨¼ÒÇÔÀ» º¸¿´´Ù. »óÇÇ ¼¼Æ÷¿¡¼­ÀÇ ¥á-SMA¹ßÇöÀº »óÇǼ¼Æ÷°¡ Àç»ýµÊ
¿¡ µû¶ó »óÇǼ¼Æ÷ÀÇ ±âÀúºÎ ¼¼Æ÷¿Í ¸ð±Ù ÁÖÀ§¼¼Æ÷¿¡¼­ Áõ°¡ÇÏ¿´´Ù.
ÀÌ»óÀÇ °á°ú¸¦ Á¾ÇÕÇϸé, ¹é¼­ »óÇǼ¼Æ÷ÀÇ Àç»ýÀº ¿°Áõ¹ÝÀÀÀÌ ¼Ò½ÇµÈ 21ÀÏ Â°ºÎÅÍ ½ÃÀÛÇÏ
¿© ½ÇÇè 30ÀÏ Â°¿¡´Â Á¤»ó°ú À¯»çÇÑ ¾ç»óÀ» º¸¿´°í, ÀÌ·¯ÇÑ ÇǺΠ¼Õ»óÀ¸·ÎºÎÅÍÀÇ È¸º¹Àº »ó
ÇDZâÀú¼¼Æ÷¿Í ¸ð±ÙÁÖÀ§ÀÇ ¼¼Æ÷Àç»ýÀ¸·ÎºÎÅÍ ½ÃÀÛµÊÀ» ¾Ë ¼ö ÀÖ¾ú´Ù.

Once tissue are injured by certain causes, our body can't maintain a normal biologic
rhythm, and because of this, wound healing responses start right after the injury. The
healing process can be divided into four stages: ¨ç inflammatory phase ¨è
epithelialization phase ¨é proliferation phase ¨ê maturation phase. Each phase is
overlapped and continued without any apparently distinguishable characteristics. The
factors affecting on wound healing are wound management, nutritional element,
environment factor, and existence of other diseases.
This research was focused on overall examination of tissue alteration on each stage of
wound healing by artificially designing skin defect on rats so that the result from the
examination could be easily applied to clinical activity.
To do this. After the hair on the dorsal surface was shaved, 15¡¿8§® oval skin defect
was formed. The rats were examined intensely on the 3rd, 7th, 15th, 21st day, and were
sacrificed on the 30th day. After fabricating 4§­ paraffin specimen, H-E staining, MT
staining, immunohistochemical study using PCNA and ¥á-SMA were performed
respectively.
The outcomes were as follows:
1. On the 3rd day, severe edema, and acute inflammatory reaction were seen. Collagen
deposition and blood vessel proliferation were started from the 7th day. On the 15th day,
collagen deposition was increased and new blood vessel proliferation was intensified.
2. Acute inflammatory reaction was completely disappeared and collagen deposition
was critically increased on the 21st day. Re-epithelialization observed from the 21st day
reached at the nearly normal status on the 30th day.
3. In the control group, PCNA positive reaction was seen on the basal layer and hair
follicle of epidermis ; however, in the experimental group, PCNA positive reaction was
increased on the basal cell layer and hair follicle as re-epithelialization occurred.
4. Blood vessel proliferation observed by ¥á-SAM positive reaction increased on the
basal cell layer of epidermis and surrounding hair follicle.
According to the above results, it was confirmed that the re-epithelialization of rats
began on the 21th day when inflammatory reaction was disappeared and, on the 30th
day, it was recovered to the stage similar to a normal status. This kind of recovery
from skin defect started with re-epithelialization on the basal cell layer and surrounding
hair follicle.

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