神经药理学报 ›› 2014, Vol. 4 ›› Issue (5): 15-23.

• 实验方法学 • 上一篇    下一篇

溃疡性结肠炎模型的构建及其炎症反应机制研究

王倩,田慧,刘靓靓,钟明,梅艳飞,张力   

  1. 河北北方学院,河北张家口,075000,中国
  • 出版日期:2014-10-26 发布日期:2015-01-20
  • 通讯作者: 张力,男,教授,硕士生导师;研究方向:神经药理学;E-mail:zmczl@hotmail.com
  • 作者简介:王倩,女,硕士;研究方向:神经药理学;E-mail:wangqianpharmacy@126.com
  • 基金资助:

    国家自然基金课题(No. 81274005)

Establishment of model about Ulcerative Colitis and the Mechanism of Colitis-related Inflammatory Responses

WANG Qian TIAN Hui LIU Liang-jing ZHONG Ming MEI Yan-fei ZHANG Li   

  1. Hebei North University, Zhangjiakou, 075000, China
  • Online:2014-10-26 Published:2015-01-20
  • Contact: 张力,男,教授,硕士生导师;研究方向:神经药理学;E-mail:zmczl@hotmail.com
  • About author:王倩,女,硕士;研究方向:神经药理学;E-mail:wangqianpharmacy@126.com
  • Supported by:

    国家自然基金课题(No. 81274005)

摘要: 目的:构建2,4,6-三硝基苯磺酸(2,4,6-trinitrobenzene sulfonic acid,TNBS)以及恶唑酮(Oxazolone,OXZ)诱导的小鼠溃疡性结肠炎(Ulcerative Colitis,UC)模型。方法:将120只昆明小鼠(♂)随机分为4组(n=30)。Ⅰ组、Ⅱ组参照Morris及Walter的方法制备小鼠TNBS模型:Ⅰ组(TNBS溶剂对照组),50%乙醇0.1ml灌肠;Ⅱ组(TNBS模型组),0.6%TNBS溶液0.1ml灌肠;两组灌肠给药一次后在d 1,d 2,d 3,d 5,d 7每组处死6只。Ⅲ组、Ⅳ组参照Heller方法制备小鼠OXZ模型:Ⅲ组(OXZ溶剂对照组),皮肤涂抹100%乙醇0.1ml,每天一次,连续2d,d 7以50%乙醇0.1ml灌肠;Ⅳ组(OXZ模型组),皮肤涂抹1%OXZ溶液(100%乙醇溶解)0.1ml每天一次,连续2d(致敏),d 7以0.5%OXZ(50%乙醇溶解)0.1ml灌肠;两组灌肠给药一次后在d 1~d 5每天处死6只小鼠。观察Ⅰ组~Ⅳ组小鼠疾病活动指数(Disease Activity Index,DAI)、结肠组织大体损伤指数(Colon Macroscopic Damage Index,CMDI)和病理组织学评分(Histopathological Score,HPS),并检测小鼠结肠组织中髓过氧化物酶(Myeloperoxidase,MPO)、白细胞介素-4(Interleukin-4,IL-4)、肿瘤坏死因子-α (Tumor Necrosis Factor -α,TNF-α)的水平。结果:两种模型组小鼠DAI,CMDI和HPS均较对照组有明显改变;TNBS和OXZ诱导的结肠炎均可导致MPO明显上升,TNBS结肠炎TNF-α明显上升,OXZ结肠炎IL-4明显下降。结论:TNBS及OXZ均能诱导小鼠溃疡性结肠炎模型。两种模型各有特点,其中TNBS诱导的小鼠溃疡性结肠炎以辅助性T1(helper1,Th1)型炎症反应为主,OXZ诱导的小鼠溃疡性结肠炎以辅助性T2(helper2,Th2)型炎症反应为主。

关键词: 溃疡性结肠炎, 2,4,6-三硝基苯磺酸(TNBS), 恶唑酮(OXZ), 白细胞介素-4(IL-4), 肿瘤坏死因子-&, alpha, (TNF-&, alpha, )

Abstract: Objective: To establish 2,4,6- trinitrobenzene sulfonic acid (TNBS) and oxazolone (OXZ) induced murine models of ulcerative colitis (UC). Methods:Totally 120 mice (♂) were randomly divided into four groups (n = 30). Ⅰ,Ⅱgroup referring to Morris and Walter TNBS model mice were prepared: Ⅰgroup (TNBS solvent control group), 50% ethanol 0.1ml enema; Ⅱgroup (TNBS model group), 0.6% TNBS solution 0.1ml enema; after the two groups enema administered once, on d 1, d 2, d 3, d 5, d 7, 6 mice in each group were sacrificed. Ⅲ, Ⅳ group referring to Heller OXZ model mice were prepared: Ⅲ group (OXZ solvent control group), skin smear 100% ethanol 0.1ml, once a day for 2d, d 7 with 50 percent ethanol 0.1ml enema; Ⅳ group (OXZ model group), skin applicator 1% OXZ solution (100% ethanol solution) 0.1ml once a day for 2d (sensitization), d 7 with 0.5% OXZ (50% ethanol solution) 0.1ml enema; after the two groups enema administered once, on d 1 to d5 6 mice in each group were sacrificed. Observed mice Disease Activity Index (DAI), Colon Macroscopic Damage Index (CMDI) and Histopathological Score (HPS) of group Ⅰ ~ Ⅳ, and detected mice colon tissue Myeloperoxidase (MPO), Interleukin -4 ( IL-4), Tumor Necrosis Factor -α (TNF-α) levels. Results: Both models mice DAI, CMDI and HPS, compared with control group, had significantly changed; TNBS-induced colitis and OXZ can lead to significantly increased MPO, TNBS colitis TNF-α significantly increased, OXZ colitis significantly decreased IL-4 . Conclusion:TNBS and OXZ could induce mouse model of ulcerative colitis, TNBS-induced mouse ulcerative colitis with Th1-type inflammation dominated, OXZ ulcerative colitis in mice induced Th2-type inflammatory response with the main , and so, ulcerative colitis is a result that Th1 and Th2 imbalance adjusted .

Key words: ulcerative colitis , 2,4,6-trinitrobenzene sulfonic acid(TNBS), Oxazolone(OXZ), Interleukin-4(IL-4), Tumor necrosis factor -&, alpha, (TNF-&, alpha, )

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