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Effect of Glucose at High Concentrations on the Apoptosis of the Cultured Periodontal Ligament Cells and Osteoblasts

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È«ÁøÇ¥ ( Hong Jung-Pyo ) - °æÈñ´ëÇб³ Ä¡ÀÇÇÐÀü¹®´ëÇпø ±¸°­³»°úÇб³½Ç
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Abstract

°í³óµµ Æ÷µµ´çÀÌ »À¸ð¼¼Æ÷¿Í Ä¡ÁÖÀδ뼼Æ÷ÀÇ ¼¼Æ÷ÀÚ¸ê»ç¿¡ ¹ÌÄ¡´Â ¿µÇâ°ú ±× °æ·Î¸¦ ¾Ë¾Æº¸±â À§ÇÏ¿© »À¸ð¼¼Æ÷ÁÖÀÎ MC3T3-E1 (E1) ¼¼Æ÷¿Í »ç¶÷ Ä¡ÁÖÀδë·ÎºÎÅÍ ÀÏÂ÷¹è¾çÀ» ÅëÇØ ¾òÀº Ä¡ÁÖÀδ뼼Æ÷¸¦ 1,000 §·/§¤ ³óµµÀÇ Æ÷µµ´çÀÌ Æ÷ÇÔµÈ ¹è¾ç¾× (´ëÁ¶±º)°ú 4,500 §·/§¤ ³óµµÀÇ Æ÷µµ´çÀÌ Æ÷ÇÔµÈ ¹è¾ç¾× (½ÇÇ豺)À¸·Î ³ª´©¾î 24½Ã°£°ú 48½Ã°£ ¹è¾çÇÏ¿´´Ù. ±× ÈÄ, ELISA assay¸¦ ÅëÇØ p38 MAPK¿Í caspase-3ÀÇ ¹ßÇöÀ» Æò°¡ÇÏ°í Western blotÀ» ÅëÇØ JNK-1°ú ERK-1ÀÇ ¹ßÇöÀ» Æò°¡ÇÏ¿© ´ÙÀ½°ú °°Àº °á·ÐÀ» ¾ò¾ú´Ù.
1. »À¸ð¼¼Æ÷¿Í Ä¡ÁÖÀδ뼼Æ÷ ¸ðµÎ ´ëÁ¶±º¿¡ ºñÇØ ½ÇÇ豺¿¡¼­ caspase-3¿Í p38 MAPK ¹ßÇöÀÌ Áõ°¡ÇÏ¿´´Ù.
2. ½ÇÇ豺¿¡¼­ÀÇ caspase-3¿Í p38 MAPK ¹ßÇöÀº »À¸ð¼¼Æ÷¿¡ ºñÇØ Ä¡ÁÖÀδ뼼Æ÷¿¡¼­ ´õ¿í Å©°Ô Áõ°¡ÇÏ¿´´Ù.
3. »À¸ð¼¼Æ÷¿Í Ä¡ÁÖÀδ뼼Æ÷ ¸ðµÎ ´ëÁ¶±º¿¡ ºñÇØ ½ÇÇ豺¿¡¼­ JNK-1 ¹ßÇöÀÌ Áõ°¡ÇÏ¿´´Ù.
4. »À¸ð¼¼Æ÷¿Í Ä¡ÁÖÀδ뼼Æ÷ ¸ðµÎ ERK-1 ¹ßÇö¿¡´Â º¯È­°¡ ¾ø¾ú´Ù.
ÀÌ»óÀÇ °á°ú·Î º¸¾Æ, °íÇ÷´ç Á¶°Ç¿¡ ÀÇÇØ »À¸ð¼¼Æ÷¿Í Ä¡ÁÖÀδ뼼Æ÷ÀÇ ¼¼Æ÷ÀÚ¸ê»ç°¡ Áõ°¡Çϸç, Ä¡ÁÖÀδ뼼Æ÷°¡ °íÇ÷´ç Á¶°Ç¿¡ ´õ¿í ¹Î°¨ÇÏ°Ô ¹ÝÀÀÇÏ¿© ¼¼Æ÷ÀÚ¸ê»ç°¡ Å©°Ô Áõ°¡ÇÏ´Â °ÍÀ¸·Î »ý°¢µÈ´Ù. ¶ÇÇÑ ÀÌµé ¼¼Æ÷ÀÇ ¼¼Æ÷ÀÚ¸ê»ç °úÁ¤Àº p38 MAPK¿Í JNK-1 °æ·Î°¡ °ü¿©Çϸç ERK-1 °æ·Î´Â °ü¿©ÇÏÁö ¾Ê´Â °ÍÀ¸·Î ÃßÁ¤µÈ´Ù.

This experiment was designed to clarify the effect of extracellular glucose on the osteoblasts and periodontal ligament cells. The cells were incubated for 24 and 48 hours with ¥á-MEM including 1,000 §·/§¤ (control group) and 4,500 §·/§¤ (experimental group) of glucose. Then, the expressions of caspase-3, p38 MAPK, JNK-1, and ERK-1 were examined using Elisa assay and Western blot. The results were as follows:
1. The expression of caspase-3 and p38 MAPK was increased by the high extracellular glucose in both cells.
2. The expression of caspase-3 and p38 MAPK was increased greatly in the periodontal ligament cells than the E1 cells by the high extracellular glucose.
3. The expression of JNK-1 was increased by the high extracellular glucose in both cells.
4. The expression of ERK-1 was not changed by the high extracellular glucose in both cells.
These results suggest that extracellular glucose at high concentrations may inhibit the periodontal regeneration process increasing cellular apoptosis. And p38 MAPK and JNK-1 pathway may be the most responsible intracellular pathway rather than ERK-1.

Å°¿öµå

Æ÷µµ´ç;»À¸ð¼¼Æ÷;Ä¡ÁÖÀδ뼼Æ÷;¼¼Æ÷ÀÚ¸ê»ç
p38 MAPK;JNK-1;Glucose;Osteoblast;Periodontal ligament cell;Apoptosis

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