听源性惊厥致P77PMC大鼠杏仁核内胆囊收缩素mRNA短暂性增加  

A transient increase in CCK mRNA levels in amygdala following audiogenic seizures in audiogenic seizure prone rats

作　　者：倪宏[1] 徐珞[1] 唐明[1] 王守彪[2] 

机构地区：[1]青岛大学医学院生理教研室,青岛266021 [2]青岛大学医学院解剖教研室,青岛266021

出　　处：《生理学报》2000年第2期152-154,共3页Acta Physiologica Sinica

摘　　要：铃声刺激诱发惊厥 ,原位杂交法检测遗传性听源性癫痫易感大鼠 (P77PMC)一次与多次惊厥发作对杏仁核内胆囊收缩素 (CCK)mRNA含量的影响。结果发现 :( 1)惊厥未发作组大鼠杏仁核单位面积内的CCKmRNA阳性神经元数 (No/ 0 0 1mm2 )较少 ,为 8± 1;( 2 )惊厥发作一次组大鼠杏仁核单位面积内CCKmRNA阳性神经元数显著增加 ,发作后 30min时达到峰值 ,为 5 8± 5 (P <0 0 1) ,但是 2h后迅速降为正常 ,为 9± 2 (P >0 0 5 ) ;( 3)惊厥多次发作组大鼠在惊厥发作后 30min时 ,CCKmRNA阳性神经元数亦显著增加 ,为 2 2± 3 (P <0 0 1) ,但明显低于惊厥发作一次组大鼠 (P <0 0 1) ,1h即恢复正常 ,为 9± 3 (P >0 0 5 )。结果表明 ,惊厥发作后P77PMC大鼠杏仁核内CCKmR NA含量呈现迅速而短暂增加的特点 ,表明CCKmRNA参与惊厥的急性发作过程 。The effects of single and multiple seizures on cholecystokinin (CCK) mRNA levels in amygdala of audiogenic seizure prone rats (P77PMC) were examined by in situ hybridization. The main results are as follows: (1) CCK mRNA positive neurons (No/0 01 mm 2) in amygdala showed a transient increase in number from the 8±1 to 58±5 ( P <0 01) in 30 min and then returned to the control value in 2 h (9±2, P >0 05), and (2) in the multiple consecutive seizure rats the increase in 30 min (22±3) was less than that in the single seizure rats ( P <0 01), and the number returned to normal in 1 h (6±1, P >0 05). These data indicate that the transient increase in CCK mRNA level in amygdala following single or multiple consecutive seizures of P77PMC may be involved in anti convulsant mechanisms in response to acute seizures.

关 键 词：胆囊收缩素 惊厥 癫痫 P77PMC 脑肠肽 

分 类 号：Q426[生物学—神经生物学]