CUIMºÍUCSFµÄÑо¿ÕßÃǺÍËûÃǵÄСÊóÅóÙÃÇ·¢Ã÷ÁËÕâȺ¡°ºÃÅÂÅ¡±µÄϸ°û£¬Ñо¿Ð§¹û¡°Anxiety Cells in a Hippocampal-Hypothalamic Circuit¡±½ÒÏþÔÚ×îеġ¶Neuron¡·ÉÏŶ£¡
ÔÚ½²Õâ¸ö¹ÊÊÂ֮ǰ£¬ÎÒÃÇÏÈÏÈÈÝÁ½ÖÖ×îΪ³£ÓõÄÆÀ¼ÛСÊó½¹ÂÇˮƽµÄÐÐΪѧʵÑ飺 ¸ß¼ÜÊ®×ÖÃÔ¹¬ÊµÑ飨Elevated plus maze, EPM£©
¿õ³¡ÊµÑ飨Open field test, OFT£©
ÕâÁ½ÖÖÒªÁìµÄÔÀí¶¼ÊÇ»ùÓÚСÊóµÄÇ÷±ÜÐÔ¡ª¡ªÒ²¾ÍÊÇСÊóη¾å̹µ´¡¢Î´Öª¡¢¿ÉÄܾßÓÐΣÏյij¡ºÏ£¬¶øÌìÐÔϲ»¶¡°Ìùǽ¡±Ô˶¯¡£
ÄÏÄ£ÉúÎï¿ÉÌṩµ¥Ïî»ò³ÉÌ×µÄСÊóÐÐΪѧÆÊÎöЧÀÍ
¸ß¼ÜÊ®×ÖÃÔ¹¬£¨EPM£© ÓÉ¿ª·Å±Û£¨open arm£©ºÍ¹Ø±Õ±Û£¨close arm£©¸÷Á½Ìõ×é³É£¬³ÊÊ®×ÖÐν»Ö¯£¬½»Ö¯²¿·ÖΪÖÐÑëÇøÓò¡£Õû¸öÊ®×ÖÐÎÃÔ¹¬¾àµØÃæÓÐÒ»¶¨µÄ¸ß¶È¡£
СÊóÃæÁÙ¿ª·Å±Û±¬·¢ºÃÆæÐĶøÏëҪ̽Ë÷£¬Í¬Ê±ÓÖÓÐ×ÅÇ÷°µ±ÜÃ÷µÄÌìÐÔ£¬Á½ÕßÖ®¼ä±¬·¢Ì½ÌÖÓë»Ø±ÜµÄ³åÍ»ÐÐΪ£¬±¬·¢½¹ÂÇÐÄÀí¡£¿ÉÒÔͨ¹ý½ÏÁ¿Ð¡ÊóÔÚ¿ª·Å±ÛºÍ¹Ø±Õ±ÛÄÚµÄÖÍÁôʱ¼äºÍÂóÌÀ´ÆÀ¼ÛСÊóµÄ½¹ÂÇÐÐΪ¡£Ò»Ñùƽ³£ÒÔΪ£¬Ð¡ÊóÔÚ¿ª·Å±ÛÖÐÖÍÁôµÄʱ¼äºÍÂóÌÔ½¶à£¬Ð¡ÊóµÄ½¹ÂÇˮƽԽµÍ¡£
¿õ³¡ÊµÑ飨OFT£© ×°ÖÃÒ»Ñùƽ³£ÓÐÒ»¸öÕý·½ÐεÄÏä×Ó£¬¶¥²¿ÓÐÉãÏñ»ú¡£
Õâ¸öÕý·½ÐεÄÔ°µØ¿ÉÒÔ»®·ÖΪÖÐÑëÇøÓò£¨center£©ºÍÖܱßÇøÓò£¨periphery£©¡£
СÊóÈôÊÇÔÚÖÐÑëÇøÓòµÄÔ˶¯Ô½¶à£¬ËµÃ÷СÊóµÄ½¹ÂÇˮƽÏà¶Ô¾ÍÔ½µÍ¡£ËäÈ»£¬ÆÀ¼Û½¹ÂÇˮƽµÄÐÐΪѧʵÑéÉÐÓÐÐí¶à£¬ºÃ±È£º´©ËóÏäÊÔÑ飨Shuttlebox test£©£¬Ã÷°µÌ½Ë÷ʵÑ飨Light/Dark Exploration Test£©£¬Éç½»Ô˶¯ÊÔÑé (Social interaction test) µÈµÈ¡£ÒÔºóÎÒÃÇÔÙÖðÒ»ÏÈÈÝ¡£
¿ÆѧÑо¿Åú×¢ 1.ʹÓÃÉñ¾Ôª¸ÆÀë×Ó³ÉÏñÊÖÒÕ£¨calcium imaging£©£¬½«Ð¡ÐÍÏÔ΢¾µ²åÈëʵÑéСÊóµÄ´óÄÔÖУ¬¼Í¼´óÄÔº£ÂíÇøÓòÖÐϸ°ûµÄÔ˶¯ÇéÐΡ£
ÔÚEPMÖУ¬µ±Ð¡Êó̽Ë÷¿ª·Å±Ûʱ£¬º£Âí¸¹²àCA1£¨Ventral CA1, vCA1£©ÇøÓòµÄÉñ¾ÔªÏ¸°ûÔ˶¯ÏÔ×ÅÔöÌí¡£µ±Ð¡ÊóÔÚ¿ª·Å±ÛÖÐÏò¸ß¼ÜÏ·½Ì½Í·Ê±£¬vCA1Éñ¾Ôª»îÐÔ½øÒ»²½Éý¸ß¡£±ðµÄ£¬vCA1¼¤»îˮƽÓëСÊó¶Ô¿ª·Å±ÛµÄÌÓ±Üˮƽ³ÊÕýÏà¹Ø¡£Ð¡ÊóÔ½½¹ÂÇ£¬vCA1Éñ¾ÔªÏ¸°ûÔ½»îÔ¾¡£
2.ʹÓùâÒÅ´«Ñ§ÊÖÒÕʹvCA1Éñ¾ÔªÏ¸°ûĬȻ£¬Ð¡Êó¾Í»á·ÅÆúÏà¶ÔÇå¾²µÄ¹Ø±Õ±Û£¬·´¶øáÝáåÔÚEPM¿ª·Å±ÛÉÏ£¬Ô¶Àë·À»¤Ç½¡£
3.ÔÚÒÖÖÆÐÔGABAÄÜÉñ¾ÔªÌØÒìÐÔCreСÊó£¨vGAT-Cre£©ÖÐʹÓøÆÀë×Ó³ÉÏñÊÖÒÕ·¢Ã÷£¬vCA1ÒÖÖÆÐÔÖÐÐÄÉñ¾Ôª²¢Î´¼ÓÈëµ½Óë½¹ÂÇÏà¹ØµÄÐÐΪ£¨¶Ô¿ª·Å±ÛµÄ̽Ë÷£©ÖС£
4.»ùµ×ÐÓÈʺˣ¨BA£©ºÍÍâ²àÏÂÇðÄÔ£¨LHA£©ÊÇÁ½¸öÓë½¹ÂÇÏà¹ØÐÐΪ¡¢Ï°µÃÐԿ־塢ѹÁ¦ÒÖÓôÇ×½üÏà¹ØµÄÄÔÇø¡£
ʹÓùâÒÅ´«Ñ§ÊÖÒÕ·¢Ã÷£¬vCA1Éñ¾Ôª¼ÈͶÉäµ½BA£¬Ò²Í¶Éäµ½LHA¡£
ÓÃÁ½ÖÖ²î±ðµÄÄæÐÐʾ×ÙȾÁÏȾɫ·¢Ã÷£¬Í¶Éäµ½BAµÄvCA1Éñ¾ÔªÓëͶÉäµ½LHAµÄvCA1Éñ¾Ôª²¢²»Öصþ£¬ÊÇÁ½Èº²î±ðµÄϸ°û¡£
5.ÕâÁ½ÖÖ²î±ðµÄvCA1ͶÉä»Ø·¶ÔСÊóµÄÐÐΪÓвî±ðµÄ×÷Óãº
¼¤»îvCA1-BAͶÉäºó£¬Ð¡Ê󳡾°¿Ö¾åÌõ¼þ·´ÉäµÄ½¨ÉèÊܵ½×ÌÈÅ£»¶ø¼¤»îvCA1-LHAͶÉä²»Ó°Ï쳡¾°¿Ö¾åµÄ±àÂëÓë¶ÁÈ¡¡£
¼¤»îvCA1-LHAͶÉä·´¶øʹСÊóÔÚ¿õ³¡ÊµÑéÖÐÖÐÑëÇøÓòµÄ̽Ë÷ÏÔÖøïÔÌ£¬ÔöÌíÁËСÊóµÄ½¹ÂÇˮƽ£»¶ø¼¤»îvCA1-BAͶÉä²»Ó°ÏìСÊóµÄ½¹ÂÇÐÐΪ¡£
6.ʹÓÿÉÄæÐÐѬȾͶÉäÉñ¾ÔªµÄ2ÐÍÈ®ÏÙ²¡¶¾CAV2-Cre£¬»®·Ö×¢ÉäÔÚBA»òLHAÇøÓò£¬ÍŽá¸ÆÀë×Ó³ÉÏñÊÖÒÕ·¢Ã÷£¬EPMʵÑéÖУ¬vCA1-LHAÉñ¾ÔªÔÚ¿ª·Å±ÛÓë¹Ø±Õ±ÛÖ®¼äµÄ»îÐÔת±ä²î±ð¸üÏÔ×Å£¬²¢ÇÒ±»¿ª·Å±Û¼¤»îµÄ½¹ÂÇϸ°ûÖÐvCA1-LHAÉñ¾ÔªÒ²Õ¼ÓÐÖ÷Á¦¡£