甘珀酸钠苦参素包合物对小鼠中枢的抑制作用

目的：研究甘珀酸钠苦参素包合物（OCSIC）对小鼠中枢的抑制作用并探讨其机制.方法：采用行为药理学方法观察OCSIC对小鼠主动、被动活动协调能力及耐力对戊巴比妥钠（PENT）催眠作用的影响;γ-氨基丁酸（GABA）、地西泮（DZ）、3-哌啶甲酸乙酯（EN）的协同作用及对印防己毒素（PTX）、海人藻酸（KA）、N-methyl-D-aspartate（NMDA）所致惊厥的拮抗作用.采用免疫组织化学方法（SABC法）检测OC-SIC对小鼠大脑皮层、海马GABA转运体1（GAT-1）蛋白表达的影响.结果：OCSIC100,50,25mg/kg分别使小鼠自主活动减少86.7%,85.6%,17.2%;PENT使入睡潜伏期分别缩短61.2%,49.0%,36.7%,而睡眠持续时间分别延长379.8%,146.2%,132.2%（P〈0.01,P〈0.05）并能明显加强阈下剂量PENT的催眠作用.阈下剂量的OCSIC与阈下剂量的GABA或EN合用分别可使小鼠自主活动率减少78.8%,47.0%（P〈0.01）;OCSIC100mg/kg与阈下抗惊厥剂量DZ（0.5mg/kg）合用能对抗PTX致惊厥作用（P〈0.05）,但不能对抗KA,NMDA致惊厥作用.OCSIC能明显减少小鼠大脑皮层和海马GAT-1免疫阳性细胞的表达（P〈0.01）.结论：OCSIC具有中枢抑制作用,其作用机制与GABA神经功能有关.

Inhibitory effects of oxymatrine-carbenoxolone sodium inclusion complex on central nervous system in mice

AIM:To explore the influence of oxymatrine-carbenoxolone sodium inclusion complex (OCSIC)on the central nervous system. METHODS: The action of OCSIC on central nervous system was studied by observing the changes of initiative and passive activity's tolerance and harmonious motion, by measuring the influence of pentobarbital's hypnotic action, by coordinating with GABA, Diazepam or Ethylnipecotate and antagonizing the convulsion caused by Picrotoxin, Kainic acid and N-methyl-D-aspartate, and by adopting immu...