中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (18): 2661-2667.doi: 10.3969/j.issn.2095-4344.2016.18.012

• 周围神经损伤动物模型 Animal models of peripheral nerve injury • 上一篇    下一篇

自主运动后BALB/c和C57BL/6小鼠学习记忆行为学指标的分析比较

刘雪芹,李 睿,崔佳彬,陆 利,赵云鹤   

  1. 山西医科大学人体解剖学教研室,山西省太原市 030001
  • 收稿日期:2016-03-10 出版日期:2016-04-29 发布日期:2016-04-29
  • 通讯作者: 赵云鹤,博士,讲师,山西医科大学人体解剖学教研室,山西省太原市 030001
  • 作者简介:刘雪芹,女,1987年生,山西省吕梁市人,汉族, 2013年山西医科大学毕业,硕士,助教,主要从事中枢神经系统的损伤与修复相关研究。
  • 基金资助:

    山西省基础研究计划—自然科学基金(2015011132);国家级大学生创新创业训练项目(201510114005);山西省研究生创新基金项目(20133075)

Learning and memory abilities between BALB/c and C57BL/6 mice after voluntary movement

Liu Xue-qin, Li Rui, Cui Jia-bin, Lu Li, Zhao Yun-he   

  1. Department of Human Anatomy, Shanxi Medical University, Taiyuan 030001, Shanxi Province, China
  • Received:2016-03-10 Online:2016-04-29 Published:2016-04-29
  • Contact: Zhao Yun-he, M.D., Lecturer, Department of Human Anatomy, Shanxi Medical University, Taiyuan 030001, Shanxi Province, China
  • About author:Liu Xue-qin, Master, Teaching assistant, Department of Human Anatomy, Shanxi Medical University, Taiyuan 030001, Shanxi Province, China
  • Supported by:

     the Shanxi Provincial Basic Research Program—Natural Science Foundation, No. 2015011132; the National College Students’ Innovation and Entrepreneurship Training Program, No. 201510114005; the Postgraduate Student Innovation Foundation Project in Shanxi Province, No. 20133075

摘要:

文章快速阅读:

 

文题释义:
学习记忆:学习记忆是大脑最基本也是最重要的高级神经功能之一,是中枢神经系统功能的整合;海马是学习记忆的主要脑区,其结构受损会导致学习记忆功能障碍,产生相关的行为学改变;认知训练和自主运动能够促进海马神经发生,改善海马的结构和功能,提高学习记忆能力。
行为学研究:是指研究者通过科学和客观地研究自然条件下人或动物的沟通行为、情绪表达、社交行为、学习行为、繁殖行为等行为及其规律,从而判断人或动物的感觉和认知活动,是研究神经发生及其功能常用的方法之一。
 
背景:BALB/c和C57BL/6小鼠是实验室常用的两种近交品系,但是自主运动后如何科学、合理选择行为学实验方法和指标,评价小鼠的学习记忆能力目前尚无相关报道。
目的:分析比较自主运动后BALB/c和C57BL/6小鼠与学习记忆相关的行为学指标差异,为探讨运动对学习记忆能力的影响,并选择合理的行为学指标提供参考。
方法:将2.5月龄BALB/c和C57BL/6小鼠分别随机分为对照组和跑轮运动组,应用VitalView软件记录小鼠自主跑轮运动。跑轮运动4周后,通过DCX免疫荧光染色检测海马新生神经元;新异臂探索实验、新物体识别实验和水迷宫实验分析比较小鼠空间学习记忆和探索能力。
结果与结论:①BALB/c小鼠平均每天运动量约是C57BL/6小鼠的2.56倍(P < 0.001)。②跑轮运动后两种品系小鼠海马DCX阳性细胞数较对照组增多。③跑轮运动后两种品系小鼠探索新异臂和新物体的次数、围绕新异臂和新物体探索的时间和距离均较对照组增高(P < 0.001),其中BALB/c跑轮组的探索能力优于C57BL/6跑轮组(P < 0.05)。④Morris水迷宫实验结果表明,C57BL/6跑轮组寻找平台的时间缩短,小鼠到达平台次数、在目标象限探寻的时间和距离均较对照组延长(P < 0.05);但是,BALB/c跑轮组和对照组间水迷宫实验各项指标无统计学差异。综上所述,运动能促进BALB/c和C57BL/6小鼠海马神经发生;新异臂探索和新物体识别实验能够用于检测运动后两种小鼠的学习记忆能力,其中BALB/c的学习记忆能力优于C57BL/6小鼠,但运动后BALB/c小鼠不适合应用水迷宫实验检测其空间学习记忆能力的变化。
中国组织工程研究杂志出版内容重点:肾移植;肝移植;移植;心脏移植;组织移植;皮肤移植;皮瓣移植;血管移植;器官移植;组织工程
ORCID: 0000-0002-6971-0364(刘雪芹)

关键词: 实验动物, 神经损伤与修复动物模型, 自主运动, BALB/c小鼠, C57BL/6小鼠, 学习记忆

Abstract:

BACKGROUND: BALB/c and C57BL/6 mice are two inbred strains, but after voluntary movement, there is no report on how to scientifically reasonably select behavioral experiment methods and indicators and to evaluate the learning and memory abilities of mice.

OBJECTIVE: To analyze and compare the behavioral indicators between BALB/c and C57BL/6 mice following voluntary wheel running, to explore the effect of exercise on learning and memory, and to provide a reference for selecting reasonable behavioral indicators.
METHODS: 2.5-month-old BALB/c and C57BL/6 mice were randomly divided into control and voluntary wheel running groups. Independent running wheel movement of mice was recorded with VitalView system. 4 weeks later, newborn neurons were labeled via DCX immunofluorescence. Spatial learning, memory and exploration abilities were compared through new arm test, new object recognition test and Morris water maze test.     
RESULTS AND CONCLUSION: (1) The mean spontaneous activity of BALB/c mice daily was 2.56 fold of that of C57BL/6 mice during wheel running (P < 0.001). (2) Hippocampal DCX-positive cells in exercised BALB/c and C57BL/6 mice were more than those in control group. (3) Meantime, exhibited by higher frequencies to explore new arm or object, and longer time and distance of moving around them, the learning and exploring capability was improved after exercising (P < 0.001), especially in BALB/c mice. (4) Wheel running C57BL/6 mice exhibited progressed spatial learning and memory abilities compared with control mice in Morris water maze test, characterized by decreased latency to target, elevated target crossings and longer time or distance in quadrant zone (P < 0.05). However, there was no significant difference between wheel running and control BALB/c mice. Taken these data together, voluntary wheel running contributed to hippocampal neurogenesis of BALB/c and C57BL/6 mice, accompanied by the change of learning and memory capability, which could be detected properly via both new arm test and new object recognition test, but for Morris water maze test, C57BL/6 mice might be superior to BALB/c mice.   
中国组织工程研究杂志出版内容重点:肾移植;肝移植;移植;心脏移植;组织移植;皮肤移植;皮瓣移植;血管移植;器官移植;组织工程

Key words: Motor Activity, Mice, Inbred C57BL, Mice, Inbred BALB C, Learning, Memory, Tissue Engineering