中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (49): 7341-7348.doi: 10.3969/j.issn.2095-4344.2016.49.007

• 脑及脊髓损伤动物模型 Animal models of brain and spinal cord injuries • 上一篇    下一篇

急性脊髓损伤动物模型的建立与评估

吴杨鹏,范  筱,张  俐   

  1. 福建中医药大学骨伤学院省部共建教育部重点实验室,福建省福州市  350122
  • 收稿日期:2016-09-06 出版日期:2016-11-30 发布日期:2016-11-30
  • 通讯作者: 张俐,博士,教授,博士生导师,福建中医药大学骨伤学院省部共建教育部重点实验室,福建省福州市 350122
  • 作者简介:吴杨鹏,男,1990年生,福建省漳州市人,汉族,福建中医药大学在读硕士,主要从事脊髓损伤方面的研究。
  • 基金资助:

    国家自然科学基金项目(81273775);福建省百千万工程领军人才项目(闽委人才2014[4]号)

Establishment and evaluation of the animal model of acute spinal cord injury

Wu Yang-peng, Fan Xiao, Zhang Li   

  1. Key Laboratory of Ministry of Education of the People’s Republic of China, School of Orthopaedics and Traumatology of TCM, Fujian University of Traditional Chinese Medicine, Fuzhou 350122, Fujian Province, China
  • Received:2016-09-06 Online:2016-11-30 Published:2016-11-30
  • Contact: Zhang Li, M.D., Professor, Doctoral supervisor, Key Laboratory of Ministry of Education of the People’s Republic of China, School of Orthopaedics and Traumatology of TCM, Fujian University of Traditional Chinese Medicine, Fuzhou 350122, Fujian Province, China
  • About author:Wu Yang-peng, Studying for master’s degree, Key Laboratory of Ministry of Education of the People’s Republic of China, School of Orthopaedics and Traumatology of TCM, Fujian University of Traditional Chinese Medicine, Fuzhou 350122, Fujian Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81273775; the Millions Talents Engineering of Fujian Province, No. 2014[4]

摘要:

文章快速阅读: 


文题释义:
脊髓损伤:是是指外力直接或间接作用于脊髓,引起脊髓功能性或器质性损害,以及继发一系列病理改变进一步加重脊髓损伤,从而出现不可逆性的损伤平面以下感觉、运动、括约肌功能障碍、肌张力异常及病理反射。
脊髓损伤模型:建立与人类发病相近的动物模型,探其发病机制,寻找有效的治疗药物逐渐引起重视。文章选用成年雌性SD大鼠,用撞击损伤模型方法进行造模,方法容易重复,通过自制打击器改良Allen’s法成功建立脊髓撞击损伤模型。
摘要
背景:
目前国内外脊髓损伤模型的设计种类繁多,各有其优缺点,但尚未有一种客观化、标准化的模型以满足临床研究。
目的:设计一种简易打击器并建立脊髓损伤模型,通过与NYU(New York University)打击器建立的脊髓损伤模型进行对比,评估自制改良Allen’s 脊髓损伤模型的参数及稳定性。
方法:雌性SD大鼠随机分为5组,即假手术组(A组6只),自制打击器5,10 cm组(B1,B2组),NYU打击器1.25,2.5 cm组(C1,C2组),A组不打击,其余各组根据分组的不同高度进行打击,每组6只;各组分别与造模术后1,3,5,7 d进行行为学评分,冰冻切片后用尼氏染色法观察病理学改变,并进行半定量分析。
结果与结论:①在行为学评分、脊髓损伤面积比和脊髓前、后角神经元半定量分析中,同一时间点,其他4组与A组比较差异均有显著性意义(P < 0.05),B1组和C1组、B2组和C2组差异无显著性意义    (P > 0.05),B1组和B2组、C1组和C2组差异均有显著性意义(P < 0.05);②病理学改变:A组见脊髓灰、白质分界清晰,呈蝴蝶状,神经元细胞核大、核仁明显、数量较多,胞质内斑块状或虎斑样尼氏体清晰;余各组出现不同程度的淤血灶,神经元数目减少,损伤处可见细胞肿胀,轴突脱髓鞘改变,部分细胞呈空泡样改变,尼氏体模糊或消失;③结果证实,自制打击器能制备出不同损伤程度的脊髓损伤模型,与NYU脊髓损伤模型效果相近,可靠性高,稳定性好,且操作简单,易于推广,可为大鼠脊髓损伤的研究提供基础。

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: 0000-0002-6554-0329(张俐)

关键词: 实验动物, 神经损伤与修复动物模型, 脊髓损伤, 动物模型, 改良Allen’s法, 感觉评分, BBB评分, 尼氏染色, 冰冻切片, 国家自然科学基金

Abstract:

BACKGROUND: There are a variety of methods for modeling spinal cord injury at home and abroad, showing their own advantages and disadvantages, but not yet a kind of objective and standardized model meeting the clinical research.
OBJECTIVE: To design a simple impactor used for establishing the spinal cord injury model, then to evaluate the parameters and stability of the Allen’s spinal cord injury model through comparing with the New York University (NYU) impactor established model.
METHODS: Female rats were equivalently allotted into five groups: sham-operation group (group A), self-made impactor 5 and 10 cm groups (group B1 and B2) and NYU 1.25 and 2.5 cm groups (group C1 and C2). All groups except group A were subjected to striking at different heights. Behavioral scores were detected at 1, 3, 5 and 7 days after modeling. Nissl staining was used to observe the morphological changes after freezing section and semiquantitative analysis.
RESULTS AND CONCLUSION: (1) At the same time point, the behavioral scores, damaged area ratio of spinal cord and semiquantitative analysis of dorsal horn neurons showed significant differences in the group A compared with the other groups, also between groups B1 and B2, and groups C1 and C2 (P < 0.05), but no significant differences were found between groups B1 and C1, as well as groups B2 and C2 (P > 0.05). (2) In the group A, there was a clear boundary between the grey and white matter in a butterfly shape, numerous neurons with large nucleus and obvious nucleolus, and plaques or tabby of Nissl body appeared in the cytoplasm. In contrast, in the other four groups, there were few neurons, different degrees of Gore focal, swelling, demyelinating, and vacuole of cellula could be found, and Nissl body was fuzzy or disappeared. These results administrate that the self-made impactor can establish different damage degrees of spinal cord inury models, which are close to the NYU-made models. Moreover, it can be helpful for study on spinal cord injury for reasons of good stability, low cost, and operated easily.

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: Spinal Cord Injury, Animal Models, Neurobehavioral Manifestations, Tissue Engineering

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