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Ä®ÆäÀÎ ±æÇ×Á¦ÀÇ Àü½ÅÅõ¿©¿¡ ÀÇÇÑ ÁöÁÖ¸·ÇÏÃâÇ÷¼º Ç÷°ü¿¬ÃàÀÇ ¿ÏÈ­ Systemic Administration of a Novel Calpain Inhibitor Attenuates Subarachnoid Hemorrhage Induced Vasospasm

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Abstract

Ä®½·¿¡ ¹Î°¨ÇÑ Áß¼º ´Ü¹éºÐÇØÈ¿¼ÒÀÎ Ä®ÆäÀÎÀÌ ÁöÁÖ¸·ÇÏÃâÇ÷ÈÄ¿¡ È°¼ºÈ­µÈ´Ù ÀÌ È¿¼ÒÀÇ ºñ
Á¤»óÀûÀÎ È°¼ºÈ­°¡ ³úÇ÷°ü¿¬ÃàÀÇ ¹ß»ý¿¡ °ü¿©ÇÑ´Ù°í ¾Ë·ÁÁ® ÀÖ´Ù º» ¿¬±¸´Â ³úÇ÷°ü¿¬Ãà ¸ð
µ¨¿¡¼­ »õ·Î °³¹ßµÈ Ä®ÆäÀÏ ±æÇ×Á¦ÀÎ Cx-287ÀÇ È¿°ú¸¦ Æò°¡ÇØ º¸¾Ò´Ù ÁöÁÖ¸·ÇÏ ÃâÇ÷À» ÀÏ
À¸Å² Åä³¢¿¡ Cx-287À» Á¤¸ÆÁÖ»çÇÏ¿© ÁöÁÖ¸·ÇÏÃâÇ÷ ¸ðµ¨À» ¸¸µç ÀÌƲ ÈÄ¿¡ Åä³¢¸¦ °ü·ù ¹×
°íÁ¤ÇÑ ´ÙÀ½ Á¶Á÷ÇÐÀûÀÎ ¹æ¹ýÀ¸·Î ³ú±âÀúµ¿¸ÆÀÇ ´Ü¸éÀÇ ¸éÀûÀ» ÃøÁ¤ÇÏ¿´´Ù. ÀÌ ¹æ¹ýÀº ¾àÀ»
ÁÖ»çÇÏÁö ¾ÊÀº ´Ù¸¥ »ç¶÷ÀÌ Ç÷°üÀÇ º¯È­¸¦ ÃøÁ¤ÇÏ´Â ¹«ÀÛÀ§ ½ÇÇè(blind, randomized)¹ýÀ» ÀÌ
¿ëÇÏ¿´´Ù. ÁöÁÖ¸·ÇÏÃâÇ÷¸¸ ÀÏÀ¸Å² ±º¿¡¼­´Â Ç÷°ü´Ü¸éÀû ÀÌ ´ëÁ¶±ºÀÇ 38.4¡¾5.7%Á¤µµ¿´´Ù.
Cx-287 1.5mg/kgÀ» Åõ¿©ÇÑ ±º¿¡¼­´Â ÁöÁÖ¸·ÇÏÃâÇ÷¸¸ ÀÏÀ¸Å² ±º¿¡ ºñÇØ Åë°èÇÐÀûÀ¸·Î ÀǹÌ
ÀÖ´Â Â÷À̸¦ º¸ÀÌÁø ¾Ê¾ÒÁö¸¸(b.i.d. : 34.7% t.i.d. : 49.0%), Cx-287, 3mg/kgÀ» Åõ¿©ÇßÀ» ¶§
ÁöÁÖ¸·ÇÏÃâÇ÷ÈÄÀÇ ³ú±âÀúµ¿¸ÆÀÇ Ç÷°ü¿¬ÃàÀº ÀÇ¹Ì ÀÖ°Ô ¾ïÁ¦µÇ¾ú´Ù(b.i.d. : 73.4%. p<0.0003,
t.i.d. : 58.7%, p<0.05). ÀÌ·¯ÇÑ °á°ú·Î º¸¾Æ Ä®ÆäÀο¡ ÀÇÇÑ ´Ü¹é ºÐÇØÀÇ È°¼ºÈ­°¡ ³úÇ÷°ü¿¬
ÃàÀÇ º´Å»ý¸®¿¡ Áß¿äÇÏ´Ù´Â °ÍÀ» ¾Ë ¼ö ÀÖ¾ú´Ù. Áï Ä®ÆäÀÎ ±æÇ×Á¦°¡ ³úÇ÷°ü¿¬ÃàÀ» ¾ïÁ¦ÇÒ
¼ö Àִٴ ù Áõ°ÅÀÓÀ» º¸¿© ÁÖ¾ú´Ù.
#ÃÊ·Ï#
The calcium-sensitive neutral protease, calpain, is activated in the basilar artery after
subarachnoid hemorrhage. Pathological activation of this proteolytic enzyme has been
suggested to contribute to cerebral vasospasm after subarachnoid hemorrhage. The
present study was undertaken to evaluate the effects of a newly developed calpain
inhibitor, CX-287 on vasospasm. A blind, randomized trial was utilized in which CX-287
was injected intravenously into subarachnoid hemorrhage rabbits. Two days after
subarachnoid hemorrhage animals were sacrificed by perfusion-fixation and
cross-sectional areas of the basilar arteries were measured using histological techniques,
Expressing the cross-sectional area in the untreated SAH animals as a percentage of
control value, it was 38.4¡¾5.7%. Basilar artery area of the treatment groups with
1.5mg/kg CX-287(b.i.d or t.i.d) showed no statistical differences from subarchnoid only
group(b.i.d : 34.7%, t.i.d : 49.0%). However, the treatment group with 3mg/kg CX-287
showed significant reversal of the subarachnoid hemorrhage-induced constriction(b.i.d :
73.4% p<0.0003, t.i.d : 58.7%, p<0.05). These findings support the important role of
calcium activated proteolysis by calpain in the pathophysiology of vasospasm after
subarachnoid hemorrhage, Furthermore, these results provide the first demonstration that
a calpain that a calpain inhibitor can inhibit cerebral vasospasm.

Å°¿öµå

Calpain inhibitor; Vasospasm; Intravenous injection; CX-287;

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