不同剂量甲基苯丙胺对小鼠空间学习记忆能力的影响及其机制
R89; 目的 研究不同剂量甲基苯丙胺(methamphetamine,METH)对小鼠空间学习记忆的影响及可能机制.方法 以C57BL/6小鼠为研究对象,采用0.5、1.0、2.0mg/kg的METH或生理盐水,在每天的Morris水迷宫行为学习前腹腔注射给药,连续5d,每天4轮的定位航行实验训练,最后一次训练完24 h后进行空间探索实验,观察不同剂量METH对小鼠空间学习记忆的影响.测试后立即采用颈椎脱臼法处死小鼠,并剥离海马组织,采用Western blot方法检测海马中ERK1/2(extracellular signal-regulated kinase)、CREB(cAMP res...
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| Published in | 西安交通大学学报(医学版) Vol. 40; no. 4; pp. 559 - 563 |
|---|---|
| Main Authors | , , , , , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
西安医学院护理学院,陕西西安710021
05.07.2019
西安交通大学医学部法医学院,陕西西安710061%西安医学院护理学院,陕西西安,710021%西安交通大学医学部法医学院,陕西西安,710061 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1671-8259 |
| DOI | 10.7652/jdyxb201904013 |
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| Abstract | R89; 目的 研究不同剂量甲基苯丙胺(methamphetamine,METH)对小鼠空间学习记忆的影响及可能机制.方法 以C57BL/6小鼠为研究对象,采用0.5、1.0、2.0mg/kg的METH或生理盐水,在每天的Morris水迷宫行为学习前腹腔注射给药,连续5d,每天4轮的定位航行实验训练,最后一次训练完24 h后进行空间探索实验,观察不同剂量METH对小鼠空间学习记忆的影响.测试后立即采用颈椎脱臼法处死小鼠,并剥离海马组织,采用Western blot方法检测海马中ERK1/2(extracellular signal-regulated kinase)、CREB(cAMP response element-binding protein)磷酸化水平的变化.结果 相比盐水组小鼠,1.0 mg/kg METH组小鼠爬台潜伏期明显缩短(P<0.05),在目标象限的停留时间(P<0.05)、穿台次数(P<0.05)明显增加;0.5、2.0 mg/kg METH对小鼠空间学习记忆无明显影响,但是0.5 mg/kg METH组小鼠呈现记忆促进趋势,而2.0 mg/kg METH组小鼠呈现记忆破坏趋势;1.0 mg/kg METH组小鼠明显伴随海马中p-ERK1/2(P<0.05)、p-CREB(P<0.05)水平的增高.结论 1.0 mg/kg METH明显提高小鼠空间学习能力及记忆水平;在0.5、1.0、2.0 mg/kg的METH三个剂量之间,METH的效应呈倒U曲线型;海马中ERK1/2、CREB可能参与METH诱导的小鼠空间学习记忆的提高. |
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| AbstractList | R89; 目的 研究不同剂量甲基苯丙胺(methamphetamine,METH)对小鼠空间学习记忆的影响及可能机制.方法 以C57BL/6小鼠为研究对象,采用0.5、1.0、2.0mg/kg的METH或生理盐水,在每天的Morris水迷宫行为学习前腹腔注射给药,连续5d,每天4轮的定位航行实验训练,最后一次训练完24 h后进行空间探索实验,观察不同剂量METH对小鼠空间学习记忆的影响.测试后立即采用颈椎脱臼法处死小鼠,并剥离海马组织,采用Western blot方法检测海马中ERK1/2(extracellular signal-regulated kinase)、CREB(cAMP response element-binding protein)磷酸化水平的变化.结果 相比盐水组小鼠,1.0 mg/kg METH组小鼠爬台潜伏期明显缩短(P<0.05),在目标象限的停留时间(P<0.05)、穿台次数(P<0.05)明显增加;0.5、2.0 mg/kg METH对小鼠空间学习记忆无明显影响,但是0.5 mg/kg METH组小鼠呈现记忆促进趋势,而2.0 mg/kg METH组小鼠呈现记忆破坏趋势;1.0 mg/kg METH组小鼠明显伴随海马中p-ERK1/2(P<0.05)、p-CREB(P<0.05)水平的增高.结论 1.0 mg/kg METH明显提高小鼠空间学习能力及记忆水平;在0.5、1.0、2.0 mg/kg的METH三个剂量之间,METH的效应呈倒U曲线型;海马中ERK1/2、CREB可能参与METH诱导的小鼠空间学习记忆的提高. |
| Author | 周小兰 张海苗 张苏梅 朱杰 陈腾 曹国芬 朱莉 张永爱 |
| AuthorAffiliation | 西安医学院护理学院,陕西西安710021;西安交通大学医学部法医学院,陕西西安710061%西安医学院护理学院,陕西西安,710021%西安交通大学医学部法医学院,陕西西安,710061 |
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| Author_FL | CAO Guo-fen ZHANG Su-mei ZHU Jie ZHU Li ZHANG Hai-miao ZHANG Yong-ai CHEN Teng ZHOU Xiao-lan |
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| Keywords | 空间记忆 海马 甲基苯丙胺 ERK1/2 CREB 空间学习 |
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