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Abstract

¼­ ·Ð
³ú°¡ ¿Ü»ó¼º ¼Õ»óÀ» ¹Þ°Ô µÇ¸é Áö¹æ °ú»êÈ­ Çö»óÀÌ Áõ°¡ÇÏ°í, ÀÌ¿¡ µû¶ó malonate°¡ Áõ°¡
ÇÏ°Ô µÈ´Ù. malonate´Â Krebs ȸ·Î¿¡¼­ Succinate dehydrogenase(SDH)¸¦ ¾ïÁ¦ÇÏ´Â °ÍÀ¸·Î
¾Ë·ÁÁ® ÀÖ´Ù ÀÌ SDH´Â ½Å°æ¿¡³ÊÁö´ë»ç¿¡¼­ Áß¿äÇÑ ¿ªÇÒÀ» ÇÏ´Â ¹ÌÅäÄܵ帮¾Æ³» È¿¼Ò·Î ¾Ë
·ÁÁ® ÀÖ´Ù. ÀÌ SDH´Â ½Å°æ¿¡³ÊÁö ´ë»ç¿¡¼­ Áß¿äÇÑ ¿ªÇÒÀ» ÇÏ´Â ¹ÌÅäÄܵ帮¾Æ³» È¿¼Ò·Î ¾Ë
·ÁÁ® ÀÖ´Ù. ¶ÇÇÑ malonate´Â ³ú¿¡¼­ ¾Æ¹Ì³ë»ê ½Å°æÀü´ÞüÀÇ Àü±¸¹°Áú·Î Krebs ȸ·Î¸¦ ÅëÇØ
¼º»ó¼¼Æ÷¿¡¼­ ´º·ÐÀ¸·Î º¸ÃæµÇ´Â ´ë»ç ¹°ÁúÁßÀÇ Çϳª·Î ¾Ë·ÁÁ® ÀÖ´Ù. ÀÌ·¯ÇÑ malonate´Â
SDH¸¦ ¾ïÁ¦Çϸç malate Àü´ÞÀ» ¾ïÁ¦ÇÏ°Ô µÇ¸é, ±× °á°ú ATP »ý¼ºÀÌ °¨¼ÒÇÏ°Ô µÇ°í, ATP
»ý¼ºÀÌ °¨¼ÒÇϸ鼭 NMDA ¼ö¿ëü°¡ È°¼ºÈ­µÇ°Ô µÈ´Ù. ±× °á°ú NMDA ¼ö¿ëü¿¡ ÀÇÇØ Áß°è
µÇ´Â excitotoxicity¿¡ ÀÇÇØ ½Å°æ¼Õ»ó°ú ½Å°æ ±«»ç°¡ ¹ß»ýÇÏ°Ô µÈ´Ù. Áö±Ý±îÁö ÀÌ·¯ÇÑ
malonate¿Í ¿Ü»ó¼º ³ú¼Õ»ó°ú °ü°è¿¡ ´ëÇÑ¿¬±¸´Â °ÅÀÇ ¾ø¾ú´Ù.
ÀÌ ¿¬±¸¿¡¼­´Â ÀÌ·¯ÇÑ malonate°¡ ¿Ü»ó¼º ³ú¼Õ»óȯÀÚ¿¡¼­ ³ú¿¡ ¾î¶°ÇÑ ¿µÇâÀ» ÁÖ¸ç, ¿¹ÈÄ
¸¦ ¿¹ÃøÇϴµ¥ À־ ¾î¶² ÀÇÀǸ¦ °®´ÂÁö ¾Ë¾Æº¸°íÀÚ ÇÏ¿´´Ù.
#ÃÊ·Ï#
When the brain is damaged, lipid peroxidation and malonate concentration are
increased. The malonate activates the NMDA receptor and induces neuronal toxicity. To
investigate the importance of malonate concentration as a pronostic factor, we measured
its concentration in serum and urine of 20 patients with head trauma from August 1993
to February 1994. Controls were 20 healthy volunteers.
Blood and Urine samplings ware taken at first day after head trauma. Malonate
concentration in serum and urine was measured by utilizing the malonyl-CoA synthetase
from Rhizobium trifolii. Direct spectrophotomectric assay at 540nm was used for
purification and characterization.
Mean serum malonate concentration in patients with head trauma was 1.83¡¾0.64
mM/L and 0.72¡¾0.20 mM/L in controls. The serum malonate concentration in patients
was more significantly increased than controls(p<0.05)
Mean malonate concentration in urine was 0.61¡¾0.2mM/L and 0.76¡¾0.24mM/L in
controls. There was no significant difference between patients and controls(p>0.05).
A regression analysis on the relationship between malonate concentration, higher
malonate concentration, worse the Glasgow Outcome(r=0.064).
In conclusion, when head injury occurs, concentration of serum malonate increases and
this tends to be related to poor outcome. But, it must be further investigated to varify
whether relationship between traumatic brain injury and malonate concentration is more
closely related without other factors affecting its concentration.

Å°¿öµå

Traumatic brain injury; Malonate; NMDA receptor; Glasgow outcome scale.;

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