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±è¿µ, Ginsberg Myron D.,
¼Ò¼Ó »ó¼¼Á¤º¸
±è¿µ ( Kim Young ) 
¿ï»ê´ëÇб³ ÀÇ°ú´ëÇÐ ¿ï»ê´ëÇб³º´¿ø ½Å°æ¿Ü°úÇб³½Ç

 ( Ginsberg Myron D. ) 
U.S.A. University of Miami College of Medicine Department of Neurology

Abstract

°ú°Å¿¡ ÀúÀÚµéÀº ½ÇÇèÀû ³ú ÇãÇ÷ ¸ðÇü¿¡¼­ ÇãÇ÷ 1ÀÏ ÈÄÀÇ Áö¿¬¼º ½Ã±â¿¡¼­µµ Áߵ·Î ü¿ÂÀ» »ó½Â½ÃÄ×À» °æ¿ì ÇãÇ÷¼º ¼¼Æ÷¼Õ»óÀÌ ´õ ½ÉÈ­µÈ´Ù´Â °ÍÀ» º´¸®Á¶Á÷ÇÐÀûÀ¸·Î ÀÔÁõÇÏ¿´´Ù. ÀúÀÚµéÀº ³ú ÇãÇ÷ ¿¹ÈÄ¿¡ ´ëÇÑ Áö¿¬¼º °íü¿Â ¿µÇâÀÇ ºÐÀÚ»ý¹°ÇÐÀû ±âÀüÀ» ÆľÇÇϱâ À§ÇØ ¼¼Æ÷¿¡ ´ëÇÑ ÀÚ±Ø/¼Õ»ó¿¡ ¿¹¹ÎÇÏ°Ô ¹ÝÀÀÇÏ¿© À¯µµµÇ´Â °ÍÀ¸·Î ¾Ë·ÁÁö°í ÀÖ´Â Ãʱâ¹ÝÀÀ ÀüÀÚÀÇ ¹ßÇö ¾ç»óÀ» ¿¬±¸ÇÏ¿´´Ù ½ÇÇè¿ë ȺÁã¿¡ 60ºÐ°£ÀÇ ÀϽÃÀû Áß³úµ¿¸Æ Æó»öÀ» À¯µµÇÏ¿´°í 24½Ã°£ ÈÄ¿¡ ¸¶ÃëµÇÁö ¾ÊÀº ±ú¾î ÀÖ´Â »óÅÂÀÇ Á㸦 °¡¿­¹æ¿¡ ³ÖÀº ´ÙÀ½ Á¤»ó¿Â(37¡­38¡É) ȤÀº °í¿ÂÀÇ (40¡É) ü¿Â Á¶Á¤À» ½Ç½ÃÇÏ¿´´Ù. ü¿ÂÁ¶Á¤ ÈÄ °¢°¢ 2, 24½Ã°£¿¡ Dot blots ¹æ¹ýÀ» ÀÌ¿ëÇؼ­ 4°÷ÀÇ ±¹¼ÒºÎÀ§¿¡¼­ (ÀüµÎ¿± -´ëȸÇÇÁú, °¨°¢-¿îµ¿ÇÇÁú, ÀÌ»ó-µµ»óÇÇÁú ¹× ¹Ì»óÇÙ-ÇÇ°¢ºÎ) c¡¤fos¿Í c-jun mRNA ¹ßÇö °­µµ¸¦ ÃøÁ¤ÇÏ¿´´Ù. ¿ÂµµÁ¶Á¤ ÈÄ 2½Ã°£¿¡¼­ÀǸ¯c¡¤fos¿Í mRNA´Â ÇãÇ÷+°íü¿Â ±º¿¡¼­ ÇãÇ÷º´¼Ò ÁÖº¯ºÎÀ§¿¡ ÇØ´çÇÏ´Â ÀüµÎ¿±-´ëȸÇÇÁú¿¡ Åë°èÇÐÀûÀ¸·Î ÀǹÌÀÖ°Ô »ó½ÂÇÏ¿´°í ¹Ý¸é¿¡ c¡¤fos¿Í mRNA´Â ÇãÇ÷º´¼ÒÀÇ Á߽ɺκп¡ ÇØ´çÇÏ´Â °¨°¢-¿îµ¿ÇÇÁú, ÀÌ»ó µµ»óÇÇÁú ¹× ¹Ì»óÇÙ-ÇÇ°¢ºÎ¿¡ ƯÈ÷ »ó½ÂÇÏ¿´´Ù °á·ÐÀûÀ¸·Î c¡¤fos´Â ÇãÇ÷¿¡ ÀÌÀº Áö¿¬¼º °íü¿Â ÈÄ »ýÁ¸ÇÑ ¼¼Æ÷¿µ¿ª¿¡¼­ ´õ °­ÇÏ°Ô ¹ßÇöÇÏ¿´°í ¹Ý¸é¿¡ c-junÀº »ç¸êÇÑ ¿µ¿ª¿¡¼­ ´õ °­ÇÏ°Ô ¹ßÇöÇÑ ¹Ù À̵é À¯ÀüÀÚ´Â ³ú¼Õ»ó ÈÄ ¼¼Æ÷ÀÇ »î°ú Á×À½¿¡ Áß¿äÇÑ ¿ªÇÒÀ» ´ã´çÇÏ´Â °ÍÀ¸·Î ÃßÃøµÇ¾îÁø´Ù. ±×·¯³ª ¾ÆÁ÷µµ ÀÌ·¯ÇÑ Ãʱâ¹ÝÀÀÀ¯ÀüÀÚ ¹ßÇöÀÇ Á¤È®ÇÑ Àǹ̿¡ ´ëÇؼ­´Â ¹àÇôÁöÁö ¾Ê°íÀÖ°í µû¶ó¼­ Ä¡¸íÀûÀ¸·Î ¼Õ»ó¹ÞÀº ³ú¼¼Æ÷ÀÇ ÇâÈÄ »ýÁ¸¿¡ ´ëÇÑ ¿¬°ü¼ºÀº ´õ¿í ¸¹Àº ¿¬±¸°¡ ÀÌ·ç¾îÁ®¾ß ÇÑ´Ù°í »ý°¢µÈ´Ù.

Previous studies have indicated that hyperthemic modulation in the delayed postischmic period. even when occurring days after an ischmic insult. may augment ischemic injury. in order to evaluate the molecular mechanisms of the detrimental effects of hyperthermia on outcome, we performed a study to assess the effects of delayed postischmic hypermia on the regional expression of message for the immediate early genes c-fos and c-jun. 60 minutes of transient middle cerebral artery occlusion was produced in rats by insertion of an intraluminal filament. 24 hours after reperfusion.
rarts which were awake were subjected to normothermic(37-38¡É)hyperthermic(40¡É) temperature modulation for 3 hours in a heating chamber. Either 2 or 24 hours after temperature modulation. brains were examined for mRNA expression of c-fos and c-jun by the dot blot method. Four regions of interest were chosen : fronto-cingulate, sensorimotor. piriform-insular cortex, and caudoputamen. Dot blot analysis revealed that c-fos mRNA at 2 hours after temperaturemodulation was significantly upregulated in the ipsilateral fronto-cingulate cortex-the site of the ischemicpenumba- in rats exposed to
ischemia£«delayed hyperthemia, in comparison to rats exposed to sham£« normothermia(one-way ANOVA with post-hoc Bonferroni¡¯s test. p<0.05). in contrast. c-jun mRNA was significantly by ischmiadelayed hyperhermia within regions of core ischemia-i.e., sensorimoter and piriform-insular cortax. and caudoputamen. these finding have extened those of our earlier histopathological study to show that a significant increase in c-fos or c-jun expression may be closely linked to cellilar survival or death after delayed moderate hyperthermia following ischeemia.

Å°¿öµå

Focal ischemia; Hyperthemia; immediate early genes; Rats.;

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