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Çѱ¹È¯°æ»ý¹°ÇÐȸ / v.21, no.3, 2003³â, pp.313-318
Arsenic󸮿¡ µû¸¥ ÈòÁã Ç÷°üÀÇ ¼öÃà°ú heat shock protein 70°úÀÇ °ü°è
( Relation between Expression of Heat Shock Protein 70 and Vascular Contractility of Rat Aorta Treated with Arsenic )
±ÇÀ±Á¤;¹ÚűÔ;±èÁß¿µ; °æºÏ´ëÇб³ Àǰú´ëÇÐ ¾à¸®Çб³½Ç;°æºÏ´ëÇб³ Àǰú´ëÇÐ ¾à¸®Çб³½Ç;°æºÏ´ëÇб³ Àǰú´ëÇÐ ¾à¸®Çб³½Ç;
 
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¿ÜºÎ¿¡¼­ Åõ¿©µÈ ¿­ÀÚ±Ø, ¾ËÄÝ ¹× »ý¸®Àû ¿°°ú °°Àº ȯ°æ ½ºÆ®·¹½º´Â ü³» °¢ ºÎÀ§¿¡¼­ ½ºÆ®·¹½º´Ü¹éÁú(¿­ÀڱشܹéÁú, HSP)À» »ý¼ºÇÏ°Ô µÈ´Ù. º» ¿¬±¸¿¡¼­´Â ºñ¼Ò°¡ ÈòÁ㠴뵿¸ÆÀÇ ¼öÃà¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» Á¶»çÇϱâ À§ÇØ ½ºÆ®·¹½º´Ü¹éÁúÀÇ ¹ßÇö°ú ´ëµ¿¸ÆÀÇ ¼öÃà·ÂÀÇ º¯È­¿Í À̵é°úÀÇ °ü°è¸¦ ¾Ë¾Æº¸°íÀÚ ½ÇÇèÀ» ½Ç½ÃÇÏ¿´´Ù ÀûÃâÇÑ Ç÷°üÀº organ bath¿¡ ´ã°¡ 0, 0.5, 1, 2,¹× 4 mM As¸¦ ó¸®ÇÑ ÈÄ 1, 3, ¹× 8½Ã°£ µÚ¿¡ KCI(55 mM)¿¡ ´ëÇÑ ¼öÃà¹ÝÀÀ°ú HSP ¹ßÇöÀ» °¢°¢ »ý¸®±â·Ï°è¿Í western blotting À» ÅëÇØ ºÐ¼®ÇÏ¿´´Ù. ºñ¼Ò(4 mM)¸¦ ó¸®ÇÑ Ç÷°üÀÇ KCI¿¡ ´ëÇÑ ¼öÃà·ÂÀº ó¸® Ãʱâ(1, 3½Ã°£)¿¡´Â È¿°ú°¡ ¾ø¾ú°í ó¸® 8½Ã°£Â° ´ëÁ¶±º¿¡ ºñÇØ 39£¥·Î À¯ÀÇÀûÀÎ Áõ°¡¸¦ º¸¿´´Ù. ¶ÇÇÑ ºñ¼Ò󸮷ΠÇ÷°üÀÇ ½ºÆ®·¹½º´Ü¹éÁú HSP 70ÀÇ »ý¼ºÀº ºñ¼Ò 󸮳󵵿¡ µû¶ó Áõ°¡µÇ¾ú°í, ºñ¼Ò ó¸® Ãʱ⿡´Â º¯È­°¡ ¾ø¾úÀ¸¸ç ºñ¼Òó¸® 8½Ã°£Â° HSP»ý¼ºÀÌ ÃËÁøµÇ¾ú´Ù. HSP´Â ÁÖ·Î Ç÷°ü ÆòȰ±Ù¼¼Æ÷¿¡¼­ ÇöÀúÇÏ°Ô ¹ßÇöµÇ¾ú°í ÀϺΠ³»ÇǼ¼Æ÷¿¡¼­µµ ¹ßÇöµÇ¾ú´Ù. ÀÌ»óÀÇ °á°ú¿¡¼­ ºñ¼Ò 󸮿¡ µû¸¥ HSP 70ÀÇ ¹ßÇö°ú Ç÷°üÀÇ ¼öÃà Áõ°¡ÀÇ »ó½ÂµÇ´Â Çö»óÀÌ ºñ¼Òó¸® 8½Ã°£Â°¿¡ À¯ÀÇÇÏ°Ô Áõ°¡µÇ´Â °ÍÀ¸·Î º¸¾Æ, ºñ¼Ò󸮿¡ ÀÇÇØ Ç÷°üÀÇ ½ºÆ®·¹½º´Ü¹éÁú HSP ¹ßÇöÀÌ Áõ°¡µÇ°í ÀÌ·Î ÀÎÇØ Ç÷°ü ¼öÃà·ÂÀ» »ó½Â½ÃÄÑ °íÇ÷¾Ð À¯¹ß°úÁ¤¿¡ °ü¿©ÇÏ´Â °ÍÀ¸·Î ¿©°ÜÁø´Ù.
Environmental stresses, such as heat shock, alcohol and physiological salt have been shown to induce a group of protein called heat shock protein (HSPs) in various tissues. In this investigation, we studied that arsenic stress would alter contraction of isolated rat aorta and expression of heat shock protein 70 and investigated the relation between expression of HSP 70 and vascular contractility of isolated rat aorta. Rat aorta strips, mounted in organ baths were exposed to 0, 0.5, 1,2 and 4 mM arsonic for 60 min. and 1,3 and 8 hours later tested for contractile response and expression of heat shock protein 70. Contractility of rat aorta were determined by isometric transducer connected to computerized physiograph and expression of HSP 70 was characterized by western blotting, respectively. Potassium chloride (55 mM) significantly augmented vascular contractility of yat aorta by 39£¥ compared with the control at 8 hours but not one or three hours after treatment of 4 mM arsenic. Arsonic stress (4 mM) also increased the expression of HSP 70 in rat aorta at 8 hours but one or three hours compared with the control and HSP expressed in vascular smooth muscle cells and some expressed in endothelium cells. These results suggest that arsenic stress not only did alter the magnitude of the contractile response to high potassium chloride but also increased the expression of HSP 70 in the rat aorta.
 
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arsenic;heat shock protein;smooth muscle;contractility;
 
ȯ°æ»ý¹° / v.21, no.3, 2003³â, pp.313-318
Çѱ¹È¯°æ»ý¹°ÇÐȸ
ISSN : 1226-9999
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200311921879753)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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