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THE EFFICACY OF PROGRAMMED CRYO-PRESERVATION UNDER PRESSURE IN RAT PERIODONTAL LIGAMENT CELLS

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ÀÌ¿µÀº ( Lee Young-Eun ) - ¿¬¼¼´ëÇб³ Ä¡°ú´ëÇÐ º¸Á¸Çб³½Ç
±èÀǼº ( Kim Eui-Seong ) - ¿¬¼¼´ëÇб³ Ä¡°ú´ëÇÐ º¸Á¸Çб³½Ç
±èÁø ( Kim Jin ) - ¿¬¼¼´ëÇб³ Ä¡°ú´ëÇÐ ±¸°­º´¸®Çб³½Ç
ÇѽÂÈÆ ( Han Seung-Hoon ) - °­ºÏ»ï¼ºº´¿ø º¸Á¸°ú
À̽ÂÁ¾ ( Lee Seung-Jong ) - ¿¬¼¼´ëÇб³ Ä¡°ú´ëÇÐ º¸Á¸Çб³½Ç

Abstract

º» ¿¬±¸ÀÇ ¸ñÀûÀº Èò ÁãÀÇ »ó¾Ç ´ë±¸Ä¡¸¦ ¹ß°ÅÇÑ ÈÄ Ä¡ÁÖÀδ뼼Æ÷¸¦ ¾Ð·ÂÀ» ÀÌ¿ëÇÑ Àú¼Ó ³Ãµ¿ º¸°ü¹ýÀ¸·Î ³Ãµ¿ º¸°ü½Ã Ä¡ÁÖÀδ뼼Æ÷ÀÇ È°¼ºµµ¸¦ Àú¼Ó ³Ãµ¿¹ý, ³ÃÀå º¸°ü¹ý°ú ºñ±³ÇÏ¿© Æò°¡ÇÏ°íÀÚ ÇÏ¿´´Ù. »ýÈÄ 4ÁÖµÈ ¾ÏÄÆ Sprague-Dawley°è ÈòÁãÀÇ »ó¾Ç Á¿ì Á¦ 1,2 ´ë±¸Ä¡¸¦ ¹ß°ÅÇÏ¿© °¢ ±º ´ç 18°³ÀÇ Áã Ä¡¾Æ¸¦ MTT, WST-1 °Ë»ö¿¡ ÀÌ¿ëÇÏ¿´´Ù. ½ÇÇ豺Àº 4°³±ºÀ¸·Î ´ëÁ¶±ºÀº Áï½Ã ¹ßÄ¡±ºÀ̸ç, 4¡É ³ÃÀå°í¿¡ ÀÏÁÖÀÏ°£ º¸°üÇÑ ³ÃÀ屺, ¹ßÄ¡ ÈÄ µ¿ÇعæÁöÁ¦ 󸮰úÁ¤À» °ÅÃÄ 4¡É¿¡¼­ -35¡É±îÁö -0.5¡É/min ¼Óµµ·Î ¼­¼­È÷ ³Ãµ¿½ÃŲ µÚ -196¡É¿¡ ³Ãµ¿ÇÑ Àú¼Ó ³Ãµ¿±º, 3MPaÀÇ ¾Ð·ÂÀ» °¡ÇÏ°í -0.5¡É/min ¼Óµµ·Î 4¡É¿¡¼­ -35¡É±îÁö ¼­¼­È÷ ³Ãµ¿½ÃŲ µÚ -196¡É¿¡ ³Ãµ¿ÇÑ ¾Ð·Â Àú¼Ó ³Ãµ¿±ºÀ¸·Î ³ª´©¾ú´Ù. º¸Á¸¾×Àº F mediumÀ» »ç¿ëÇßÀ¸¸ç µ¿ÇعæÁöÁ¦·Î 10% dimethylsulfoxide(DMSO)¸¦ »ç¿ëÇÏ¿´´Ù. ÀÏÁÖÀÏ ÈÄ Çص¿ÇÏ¿© MTT, WST-1°Ë»öÀ» ½ÃÇàÇÑ µÚ Ä¡±Ù¸éÀ» ´ÜÀ§¸éÀûÀ¸·Î Ç¥ÁØÈ­Çϱâ À§ÇØ MTT, WST-1 ÃøÁ¤°ªÀ» Eosin ¿°»ö ÈÄ 530nm¿¡¼­ ÃøÁ¤ÇÑ Èí±¤µµ °ªÀ¸·Î ³ª´©¾ú´Ù. Åë°è ºÐ¼®À» À§ÇØ one way ANOVA¸¦ ½ÃÇàÇÏ¿´À¸¸ç »çÈÄ °ËÁ¤À¸·Î´Â Tukey ¹æ¹ýÀ» »ç¿ëÇÏ¿´°í °á°ú´Â ´ÙÀ½°ú °°´Ù. 1. MTT °Ë»ö¿¡ ÀÇÇÑ Èí±¤µµ¸¦ Eosin ¿°»ö ÈÄ ÃøÁ¤ÇÑ Èí±¤µµ·Î ³ª´« °ª¿¡¼­´Â ¾Ð·Â Àú¼Ó ³Ãµ¿±ºÀº Áï½Ã ¹ßÄ¡±ºº¸´Ù À¯ÀǼº ÀÖ°Ô ¼¼Æ÷ È°¼ºµµ°¡ ³·¾ÒÀ¸³ª(p<0.05), Àú¼Ó ³Ãµ¿±ºÀ̳ª ³ÃÀ屺°ú ºñ±³ÇÒ ¶§´Â ³ôÀº ¼¼Æ÷ È°¼ºµµ¸¦ º¸À̸ç Åë°èÀû À¯ÀǼºÀÌ ÀÖ¾ú´Ù(p<0.05). 2. WST-1 °Ë»ö¿¡ ÀÇÇÑ Èí±¤µµ¸¦ Eosin ¿°»ö ÈÄ ÃøÁ¤ÇÑ Èí±¤µµ·Î ³ª´« °ª¿¡¼­µµ MTT °Ë»ö°ú ¸¶Âù°¡Áö·Î ¾Ð·Â Àú¼Ó ³Ãµ¿±º¿¡¼­´Â Áï½Ã ¹ßÄ¡±ºº¸´Ù À¯ÀǼº ÀÖ°Ô ¼¼Æ÷ È°¼ºµµ°¡ ³·¾ÒÀ¸³ª(p<0.05), Àú¼Ó ³Ãµ¿±ºÀ̳ª ³ÃÀ屺°ú ºñ±³ÇÒ¶§´Â ³ôÀº ¼¼Æ÷ È°¼ºµµ¸¦ º¸À̸ç Åë°èÀû À¯ÀǼºÀÌ ÀÖ¾ú´Ù(p<0.05). À§ÀÇ °á°ú¸¦ ÅëÇØ, 3MPa(30±â¾Ð) ¾Ð·ÂÀ» ÀÌ¿ëÇÑ Àú¼Ó ³Ãµ¿ º¸°ü¹ýÀº 4¡É ³ÃÀå¹ýÀ̳ª ¾Ð·ÂÀ» »ç¿ëÇÏÁö ¾ÊÀº ´Ù¸¥ ³Ãµ¿ º¸°ü¹ý¿¡ ºñÇØ ¿ì¼öÇÑ Áã Ä¡¾ÆÀÇ Ä¡ÁÖÀδ뼼Æ÷ÀÇ È°¼ºµµ¸¦ º¸¿© Â÷ÈÄ Ä¡¾ÆÀÇ Àç½Ä/À̽ÄÀ» À§ÇÑ Áß-Àå±â Ä¡¾Æº¸°üÀ» À§ÇÑ ¹æ¹ýÀ¸·ÎÀÇ °¡´É¼ºÀ» Á¦½ÃÇÏ¿´´Ù.

The purpose of this study was to evaluate the viability of periodontal ligament cells in rat teeth using slow cryo-preservation method under pressure by means of MTT assay and WST-1 assay. Eighteen teeth of Sprague-Dawley white female rats of 4 week-old were used for each group. Both sides of the first and second maxillary molars were extracted as atraumatically as possible under Tiletamine anesthesia. The experimental groups were group 1 (Immediate control), group 2 (Cold preservation at 4¡É for 1 week), group 3 (Slow freezing), group 4 (Slow freezing under pressure of 3 MPa). F-medium and 10% DMSO were used as preservation medium and cryo-protectant. For cryo-preservation groups, thawing was performed in 37¡É water bath, then MTT assay and WST-1 assay were processed. One way ANOVA and Tukey method were performed at the 95% level of confidence. The values of optical density obtained by MTT assay and WST-1 were divided by the values of eosin staining for tissue volume standardization. In both MTT and WST-1 assay, group 4 showed significantly higher viability of periodontal ligament cells than group 2 and 3 (p < 0.05), but showed lower viability than immediate control group. By the results of this study, slow cryo-preservation method under pressure suggests the possibility for long term cryo-preservation of the teeth.1)

Å°¿öµå

Ä¡ÁÖÀδ뼼Æ÷;MTT;WST-1;È°¼ºµµ;¾Ð·Â;³Ãµ¿ º¸Á¸
periodontal ligament cell;MTT;WST-1;viability;pressure;cryo-preservation

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