摘要
背景:国外实验室一般选用近交系Lewis大鼠诱导实验性变态反应性脑脊髓炎模型,但国内缺乏Lewis大鼠。因此,本实验选用了国内数量充足、但不十分敏感的Wistar大鼠,在加用百日咳减毒活菌的情况下,成功地在Wistar大鼠中诱导出实验性变态反应性脑脊髓炎动物模型。目的:探讨在不同部位加用减毒百日咳杆菌对实验性变态反应性脑脊髓炎非敏感品系Wistar大鼠模型诱导的影响。设计:随机对照动物实验。单位:山西大同大学脑科学研究所。材料:实验于2003-03/10在山西大同大学脑科学研究所完成。雌性Wistar大鼠58只随机分为3组:①足背实验性变态反应性脑脊髓炎组24只。②腹腔实验性变态反应性脑脊髓炎组24只。③佐剂组10只。方法:除常规免疫动物外,足背实验性变态反应性脑脊髓炎组大鼠于足背皮内或皮下注射减毒百日咳杆菌0.05mL/只(含5.0×1010个菌体);腹腔实验性变态反应性脑脊髓炎组大鼠于腹腔注射减毒百日咳杆菌0.05mL/只(含5.0×1010个菌体);佐剂组则以完全弗氏佐剂代替抗原。主要观察指标:①发病时间。②体质量变化。③临床症状。④脑组织病理情况。结果:58只大鼠均进入结果分析。①发病率和发病时间:足背实验性变态反应性脑脊髓炎组发病率为87.5%(21/24),发病时间为免疫后(10.25±1.67)d,而腹腔实验性变态反应性脑脊髓炎组分别为35.7%(9/24)和(14.8±1.79)d,两组比较差异有显著性意义(P<0.05)。②体质量变化和临床症状:足背实验性变态反应性脑脊髓炎组体质量变化为(-16.00±7.30)g,症状评分为3.4±0.7;腹腔实验性变态反应性脑脊髓炎组体质量变化为(-9.14±13.11)g,症状评分为2.4±0.5。③脑组织病理情况:佐剂组大鼠脑脊髓组织没有或有少数单个核细胞浸润。实验性变态反应性脑脊髓炎大鼠炎症病灶侵犯脊髓腰膨大的白质以及灰白质交界处、软脊膜及脊髓实质,大脑皮
BACKGROUND: The animals commonly used to induce experimental allergic encephalomyelitis (EAE) in oversea laboratory are rodentia animals such as Lewis rats. But in China we are short of Lewis rats. The un-susceptire animal Wistar rats arc inexpensive and plentiful. The adding of pertussis toxin may induce EAE successfully in EAE un-susceptive Wistar rats.
OBJECTIVE: To investigate the influence of pertussis toxin injected at different sites in inducing EAE model in un-susceptive Wistar rats.
DESIGN: A randomized control animal experiment.
SETTING: Institute of Brain Science, shanxi Datong University.
MATERIALS: The study was performed in the Institute of Brain Science of Shanxi Datong University from March to October in 2003. Fifty-eight female Wistar rats were randomly divided into three groups: (1) foot dorsum EAE group (n=24); (2) intraperitoneal EAE group (n=24); (3) complete Freund adjuvant (CFA) group (n=10).
METHODS: Besides routine immunization, each rat.in the foot dorsum EAE group and intraperitoneal EAE group was administrated with 0.05 mL pertussis toxin (containing 5.0×10^10 thalli), which were given intraperitoneally and subcutaneously on one hind foot respectively, and the antigen in the CFA group was replaced by CFA.
MAIN OUTCOME MEASURES: (1) Time of attack; (2) change of body mass; (3) clinical symptoms; (4) pathological conditions of brain tissue.
RESULTS: All the 58 rats were involved in the analysis of results. (1) Incidence rate and time of attack: In the foot dorsum EAE group, the incidence of EAE was 87.5% (21/24), and the time of attack was at (10.25 ±1.67) days after immunization, which were significantly different from those in .theintraperitoneal EAE group [35.7% (9/24), (14.8±1.79) days, P 〈 0.05]. (2) Change of body mass and clinical symptoms: In the foot dotsum EAE group, the change of body mass was (-16.00±7.30) g and the symptom score was 3.4±0.7, and those in
出处
《中国临床康复》
CSCD
北大核心
2006年第14期176-178,共3页
Chinese Journal of Clinical Rehabilitation
基金
2003年山西省归国留学人员科研基金课题(2003-69)
2005年国家人口与计划生育委员会科研项目(C1-42)~~