中国组织工程研究 ›› 2019, Vol. 23 ›› Issue (7): 1063-1067.doi: 10.3969/j.issn.2095-4344.1048

• 组织构建实验造模 experimental modeling in tissue construction • 上一篇    下一篇

高脂饮食与线栓法制作慢性缺血模型鼠:方法的评估与比较

陈  磊1,丁  萌2,张青云1,高建国1,郭风玲3,杨  植1,张  猛4   

  1.  (承德医学院附属医院,1血管疝普外科,2检验科,3内分泌科,4急诊科,河北省承德市  067000)
  • 收稿日期:2018-10-07 出版日期:2019-03-08 发布日期:2019-03-08
  • 通讯作者: 张猛,硕士,医师,承德医学院附属医院急诊科,河北省承德市 067000
  • 作者简介:陈磊,男,1980年生,安徽省贵池市人,汉族,2006年哈尔滨医科大学毕业,硕士,副主任医师,主要从事血管外科研究。

Making chronic ischemia rat models by high-fat diet and thread embolism technique: evaluation and comparison of modeling methods

Chen Lei1, Ding Meng2, Zhang Qingyun1, Gao Jianguo1, Guo Fengling3, Yang Zhi1, Zhang Meng4   

  1. (1Department of Vascular Surgery, 2Department of Laboratory, 3Department of Endocrinology, 4Department of Emergency, Affiliated Hospital of Chengde Medical University, Chengde 067000, Hebei Province, China)
  • Received:2018-10-07 Online:2019-03-08 Published:2019-03-08
  • Contact: Zhang Meng, Master, Physician, Department of Emergency, Affiliated Hospital of Chengde Medical University, Chengde 067000, Hebei Province, China
  • About author:Chen Lei, Master, Associate chief physician, Department of Vascular Surgery, Affiliated Hospital of Chengde Medical University, Chengde 067000, Hebei Province, China

摘要:

文章快速阅读:

文题释义:
线栓法鼠模型:通过在大鼠股动脉中插入4-0 prolene线至膝关节附近,造成动脉管腔狭窄并产生异物反应,使管腔内逐渐产生内膜增生,逐渐造成下肢血流的减少以建立大鼠慢性后肢缺血模型。
缺血性疾病:缺血性疾病根据是否病变源自血管源性病变分为继发性及原发性缺血性疾病。原发性疾病主要是组织或器官的血管源性病变,如冠状动脉粥样硬化等导致的供血部位功能不全或坏死,继发性疾病则主要由于创伤、炎症等导致的血管离断、闭塞或受压迫所致的疾病。

摘要
背景
:有研究使用线栓法建立慢性缺血动物模型,但其观察周期较长,实验动物经过手术及疾病的打击,生存期有可能会缩短。作者在此基础上加用高脂饮食因素,进一步确立可靠的慢性缺血动物模型。
目的:探讨高脂饮食大鼠线栓法建立慢性缺血动物模型的可行性。
方法:健康2周龄SD大鼠40只,体质量为50-70 g,由承德医学院动物实验中心提供。采用随机数字表法将大鼠分成实验组及对照组:实验组大鼠选用高脂饲料进行喂养,对照组大鼠选用普通饲料进行喂养,2组均采用线栓法建立大鼠后肢缺血模型。分别于大鼠模型建立成功后第1,2,4,6周进行肌力观察、激光多普勒血流仪检测后肢血流情况、苏木精-伊红染色观察腓肠肌组织和血管组织变化。
结果及结论:①实验组造模后1周大部分大鼠出现肌力异常表现,对照组大部分未出现(P < 0.05);造模后2周及4周2组大鼠大部分均出现明显肌力异常表现,差异无显著性意义;造模后6周对照组肌力异常例数少于实验组;②激光多普勒血流检测及组织学检测均提示实验组较对照组要早出现缺血表现,且实验组缺血表现恢复程度较对照组要低;③结果说明,线栓法可有效制作慢性缺血大鼠模型,合并高脂饮食可较普通饮食早出现缺血表现,且高脂饮食可使慢性缺血状态持续时间更长。

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程
ORCID: 0000-0003-4713-9184(陈磊)

关键词: 线栓法, 高脂饮食, SD大鼠, 慢性缺血, 慢性后肢缺血模型

Abstract:

BACKGROUND: Some studies have prepared a chronic ischemic animal model using the thread embolism technique, but the observation period is longer, and the survival time of the experimental animals may be shortened because of surgical trauma and disease. Herein, the authors further established a reliable animal model of chronic ischemia using the thread embolism technique by addition of high-fat diet.
OBJECTIVE: To investigate the feasibility of establishing a reliable animal model of chronic ischemia in high-fat diet rats using the thread embolism method. 
METHODS: Forty Sprague-Dawley rats, 2 weeks of age, weighing 50-70 g, were provided by the Animal Experimental Center of Chengde Medical University in China. The rats were randomly divided into two groups, and fed with high-fat diet (experimental group) and normal diet (control group), respectively. Chronic ischemia animal models were then established in the hind limbs of all the rats using the thread embolism technique. Muscle strength of the rats was detected at 1, 2, 4, and 6 weeks postoperatively. Meanwhile, blood flow changes in the hind limbs and histological changes of the gastrocnemius and vascular tissue were observed using laser Doppler and hematoxylin-eosin staining, respectively.
RESULTS AND CONCLUSION: (1) Most of the rats in the experimental group had abnormal muscle performance at 1 week postoperatively. Most of the rats in the control group had nothing-unusual (P < 0.05). Most of the rats in both groups appeared with abnormal muscle performance at 2 and 4 weeks postoperatively, and there was no significant difference between the two groups. At 6 weeks postoperatively, the number of rats with abnormal muscle performance was lower in the control group than the experimental group. (2) Laser Doppler flow examination and histological examination both showed that the experimental group had ischemic symptoms earlier than the control group, and worse recovery from ischemia was found in the experimental group compared to the control group. These findings indicate that the thread embolism method can effectively make a rat model of chronic ischemia, and the addition of high-fat diet can cause an ischemic appearance earlier than the addition of normal diet, indicating the high-fat diet can prolong the state of chronic ischemia.

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程

Key words: Models, Animal, Ischemia, Laser-Doppler Flowmetry, Tissue Engineering

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