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DEVELOPMENT OF A PAIN ASSESSMENTMODEL ANDEFFETS OF ANTIDEPRESSANTS ON NOCICEPTIVEJAWOPENING REFLEX IN FREE MOVING RATS#

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Abstract

V.¿ä ¾à
ÀúÀÚ´Â ±ú¾îÀÖ´Â »óÅ¿¡¼­ ¾Ç¾È¸é ¿µ¿ª¿¡¼­ ¹ß»ýÇÏ´Â µ¿ÅëÀ» Æò°¡ÇÒ ¼ö ÀÖ´Â ½ÇÇè ¸ðµ¨À»
ÀÌ¿ëÇÏ¿© »ïȯ Ç׿ì¿ïÁ¦°¡ ¾Ç¾È¸é¿µ¿ª¿¡¼­ ¹ß»ýÇÏ´Â µ¿Åë¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» Æò°¡ÇÏ°í ±× Áø
Åë ÀÛ¿ë ±âÀüÀ» ±Ô¸íÇÏ°íÀÚ »ýÈÄ 15ÁÖ ÀÌ»óµÈ ¼º¼÷ ¼öÄÆ ÈòÁã 55 ¸¶¸®¿¡ ¾Õ¼­ÀÇ ¹æ¹ýÀ¸·Î
¼ö¼úÇÑ ´ÙÀ½ 48½Ã°£ÈÄ ÈòÁã°¡ ¿ÏÀüÈ÷ ȸº¹µÇ¾î ÀÚÀ¯·Ó°Ô ¿òÁ÷ÀÌ´Â »óÅ¿¡¼­ °³±¸¹Ý»ç¸¦ ±â
·ÏÇÏ´Â ¿¹ºñ½ÇÇèÀÌ ³¡³­ ´ÙÀ½ ¾à¹°ÁÖÀÔ ÀüÈÄÀÇ ±ÙÀüµµ¸¦ ºñ±³ ºÐ¼®ÇÑ °á°ú ´ÙÀ½°ú °°¾Ò´Ù.
1. Ç׿ì¿ïÁ¦¸¦ º¹°­³» 15§·/§¸ ¹× 30§·/§¸ÀÇ ³óµµ·Î ÁÖÀÔÇϰųª Á¤¸ÆÀ¸·Î 12§·/§¸¹× 18§·/
§¸ÀÇ ³óµµ·Î ÁÖ»çÇÑ ´ÙÀ½ À¯ÇØ Àü±âÀÚ±ØÀ» °¡ÇÒ ¶§ ³ªÅ¸³ª´Â °³±¸¹Ý»ç¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» ÁÖ
ÀÔÁ÷ÈĺÎÅÍ 2ºÐ °£°ÝÀ¸·Î 50ºÐ µ¿¾È Æò°¡ÇÏ¿´´Ù. Ç׿ì¿ïÁ¦ÀÎ imipramine°ú nortriptylineÀ»
15§·/§¸ÀÇ ³óµµ·Î º¹°­³» ÁÖÀÔÇϸé ÁÖÀÔ 2ºÐÀÌ Áö³­ ÈÄ ±ÙÀüµµ´Â °¢°¢85÷Ï7¿Í 85¡¾8%À¸·Î
°¢°¢ °¨¼ÒÇÏ¿´À¸¸ç ÃÖ´ë 64¡¾6¿Í 56¡¾8%·Î º¯È­ÇÏ¿´´Ù. ±×¸®°í imipramine°ú notriptylineÀÇ
±ÙÀüµµ °¨¼ÒÈ¿°ú´Â ½Ã°£ÀÌ Áö³ª¸é¼­ ȸº¹µÇ¾úÀ¸³ª desipramineÀº ±ÙÀüµµ¿¡ À¯ÀÇÇÑ º¯È­¸¦
°üÂûÇÒ ¼ö ¾ø¾ú´Ù. Desipramine, imipramine ¹× nortriptylineÀ» 30§·/§¸ÀÇ ³óµµ·Î º¹°­³» ÁÖ
ÀÔÇϸé ÁÖÀÔ 2ºÐÈÄ °¢°¢ 85¡¾2, 82¡¾2¿Í 85¡¾9%·Î °¨¼ÒÇÏ¿´À¸¸ç ½Ã°£ÀÌ Ä¡³²¿¡ µû¶ó ´õ¿í
°¨¼ÒÇÏ¿© 44÷Ï9, 15¡¾4¿Í 16¡¾3%±îÁö °¨¼ÒÇÏ¿´°í ÁÖÀÔ ÈÄ 50ºÐÀÌ Áö³ªµµ ¿ÏÀüÈ÷ ȸº¹µÇÁö
¸øÇÏ¿´´Ù. Desipramine, imipramine ¹× nortriptylineÀ» 12§·/§¸ÀÇ ³óµµ·Î Á¤¸ÆÁÖ»çÇϸé ÁÖÀÔ
2ºÐ ÈÄ ÃÖ´ë·Î °¨¼ÒÇÏ¿© ±ÙÀüµµ´Â °¢°¢ 73¡¾7, 50¡¾4¿Í 66¡¾7%À¸·Î ³ªÅ¸³µÀ¸¸ç 18§·/§¸ÀÇ
³óµµ·Î Á¤¸ÆÁÖ»çÇϸé ÁÖÀÔ Á÷ÈÄ ÃÖ´ë·Î °¨¼ÒÇÏ¿© 57¡¾6, 12¡¾3¿Í 6¡¾2%·Î ³ªÅ¸³µÀ¸¸ç ½Ã°£
ÀÌ Áö³²¿¡ µû¶ó ȸº¹µÇ¾úÀ¸³ª ¾à¹° ÁÖÀÔ ÈÄ 50ºÐÀÌ Áö³ªµµ ¿ÏÀüÈ÷ ȸº¹µÇÁö ¸øÇÏ¿´´Ù.
2. Ç׿ì¿ïÁ¦°¡ À¯ÇØ Àڱؿ¡ ÀÇÇØ ³ªÅ¸³ª´Â ¾ÇÀ̺¹±Ù Àüº¹À» ¾ïÁ¦ÇÏ´Â ±âÀüÀ» ¹àÈ÷±â À§ÇÏ
¿© opioid ¼ö¿ëü ±æÇ×Á¦ÀÎ naloxone sgmtcnin ¼ö¿ëü ±æÇ×Á¦ÀÎ methysrgide ¹× ¥á
-adren-orgic¼ö¿ëü ±æÇ×Á¦ÀÎ phentolamineÀ» 30¥ìgÀ» Ãø ³ú½Ç·Î ÀüÄ¡ ÇÑ ´ÙÀ½ 10ºÐ ÈÄ
nortriptyline 18§·/§¸¸¦ Á¤¸ÆÁÖ»çÇÏ¿© ¾ÇÀ̺¹±Ù Àüº¹ÀÇ ±ÙÀüµµ¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» ºñ±³ÇÏ¿© º¸
¾Ò´Ù. Opioid ¼ö¿ëü ±æÇ×Á¦ÀÎ naloxoneÀ» Ãø ³ú½Ç·Î Àü óġÇÑ ´ÙÀ½ nortriptylineÀ» Á¤¸ÆÁÖ
»çÇϸé nortriptylineÀÇ ±ÙÀüµµ °¨¼Ò°¡ 7¡¾2% ¿¡¼­ 47¡¾9%·Î À¯ÀÇÇÏ°Ô ¾ïÁ¦ÇÏ¿´´Ù. ±×¸®°í
methysergide ¹× PhentolamineÀ» Àüóġ ÇÏ¿©µµ ±ÙÀüµµ´Â 4¡¾2%¿¡¼­ 24¡¾6% ¹× 4¡¾1%¿¡
¼­ 51¡¾7%·Î ±ÙÀüµµ °¨¼Ò È¿°ú°¡ ¾ïÁ¦µÇ¾ú´Ù. ÀÌµé ¼ö¿ëü ±æÇ×Á¦ÀÇ È¿°ú¸¦ ½Ã°£¿¡ µû¸¥
º¯È­·Î »ìÆ캸¸é Ãø ³ú½Ç·Î Åõ¿©ÇÑ naloxone, methysErgide ¹× phentolamin Àº
nortriptyline À» ÁÖÀÔÇÏ¿© ³ªÅ¸³ª´Â ±ÙÀüµµ °¨¼Ò ¾ïÁ¦È¿°ú¿¡¼­ ÃÖ´ë°ª »Ó¸¸ ¾Æ´Ï¶ó ½Ã°£¿¡
µû¶ó ȸº¹µÇ´Â ½Ã°£µµ À¯ÀÇÇÏ°Ô °¨¼Ò½ÃÄ×´Ù.
ÀÌ»óÀÇ ½ÇÇè °á°ú·Î ¹Ì·ç¾î º¼ ¶§ Ç׿ì¿ïÁ¦´Â ¾Ç¾È¸é ¿µ¿ª¿¡¼­ ¹ß»ýÇÏ´Â Åë°¢À» ¾ïÁ¦ÇÏ¿´
À¸¸ç ±× ÁøÅë ÀÛ¿ëÀº ÁßÃ߽Űæ°è¿¡ Á¸ÀçÇÏ´Â ÁøÅë ÀÛ¿ë°è¸¦ ÅëÇÏ¿© ³ªÅ¸³¯ °ÍÀ¸·Î »ý°¢µÇ¸ç
ƯÈ÷ opioid, serotonergic ±×¸®°í adrenergic pathway°¡ °ü¿© ÇÒ °ÍÀ¸·Î »ý°¢µÈ´Ù.
#ÃÊ·Ï#
The purpose of the present was devalopment of a new pain assessment model that
recorded in free moving rats to eliminte of anesthetic agents in orofacial area.
Antinociceptive effects and mechanisms of tricyclic antidepressants is also investigated.
Fifty-five male Wistar rats (400-500gm) were anesthetized with an intraperitoneal
injection of urethane (500§·/§¸) and pentobarbital sodium ((20§·/§¸). Anesthetized rats
mounted in a sterotaxic instrument and a guide cannula was implanted in the lateral
ventricle. The Cordinates were 0.8§® posterior to bregma, 1.5§® lateral from midline and
0.4§® ventral from the skull. Stimulating electrodes implanted in the incisor plup and
recording electrodes were inserted into the belly of digastric musle. Stimulating and
recording eletodes were led subcutaneously to miniature cranial connector sealed on the
top of the skullwhit acrylic resin. Jaw opening reflex (JOP) was used a pian
assessment. Jaw opening reflex is elicted by noxious stimulation of the incisor and is
quantified by the magnitude of electromyogram of digastric muscle(dEMG). After a
48hours recovery period from surgery. JOR was recorded in free moving rats. Electrcal
shock (200 sec duration, 0.5-2mA intensity, 0.5Hz) were delivered to the dental plup.
Twenty subsequent electromyograms were recorded from digastric music in free moving
rats.
After intraperitioneal injection of 15§·/§¸ impramine or nortriptyline dEMG was
suppressed to 64 6 or 56 8% of the control. Intraperitioneal injection of 30§·/§¸
desipramine, impramine or nortriptyline dEMG respectively to 44 9, 15 4, or 16 3% of
the control. After intravenous injection of 12§·/§¸ desipramine, imipramine or
nortriptyline, dEMG was suspressed to 73 7, 50 4, or 66 7% of the control.
Intravenous injection of 18§·/§¸ desipramine, imipramine or nortriptyline suppressed
dEMG respectively to 57 6, 12 3 or 6 2% of the control. To investigate the central
mechanisms of antinociception of nortriptyline, naloxne, opioid receptor antagonist,
methysergide, and phentolamine inhibited suppression of dEMG by intravenous injection
of 18§·/§¸ notriptyline from 7 2 to 47 9, from 4 2 to 24 6, and from 4 1 to 51 7%
of the control resectively.
these results suggest that antidepressant agents be to modulate pain transmission in
orofacial area. The analgesia produced by intraperitioneal and intraventous injection of
antidepressants seems to be mediated by multipule pathways such as descending pain
inhibitory system.

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Paln assessment model; Antidepressant;

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