肝螺杆菌感染对葡聚糖硫酸钠诱导小鼠慢性结肠炎模型的影响

doi:10.12300/j.issn.1674-5817.2020.136

实验动物与比较医学 ›› 2021, Vol. 41 ›› Issue (3): 226-231.DOI: 10.12300/j.issn.1674-5817.2020.136

• 论著:人类疾病动物模型 • 上一篇下一篇

肝螺杆菌感染对葡聚糖硫酸钠诱导小鼠慢性结肠炎模型的影响

吴志浩¹, 沈宸¹, 殷俊¹, 朱立麒¹, 张泉^1,2

1.扬州大学兽医学院,扬州225009;
2.扬州大学附属医院,扬州 225001

收稿日期:2020-11-09 修回日期:2021-03-22 出版日期:2021-06-25 发布日期:2021-07-05
作者简介:吴志浩(1996—), 男, 硕士研究生, 研究方向: 实验动物病原学与比较医学。E-mail: 1600998169@qq.com
基金资助:
江苏省重点研发计划 (社会发展-面上项目) (BE2020674)

Effect of Helicobacter hepaticus Infection on Chronic Colitis Induced by Dextran Sulfate Sodium

WU Zhihao¹, SHEN Chen¹, YIN Jun¹, ZHU Liqi¹, ZHANG Quan^1,2

1. College of Veterinary Medicine, Yangzhou University, Yangzhou 225009, China;
2. Affiliated Hospital of Yangzhou University, Yangzhou 225001, China

Received:2020-11-09 Revised:2021-03-22 Online:2021-06-25 Published:2021-07-05

摘要/Abstract

摘要： 目的探讨肝螺杆菌（Helicobacter hepaticus,H.h）感染对葡聚糖硫酸钠（dextran sulfate sodium,DSS）诱导的小鼠慢性结肠炎的影响。方法 40只雄性IL-10^-/-小鼠随机分为4组,分别为对照组、H.h组、DSS组和H.h+DSS组,H.h组和H.h+DSS组经灌胃感染H.h。H.h感染5 d后,DSS组和H.h+DSS组小鼠连续饮用2% DSS水7 d,然后恢复正常饮水5 d,再连续饮用2% DSS水7 d;其余组正常饮水。实验结束后处死各组小鼠,取结肠并测量其长度,然后分为3份,分别用于组织病理学检查、细胞因子mRNA转录水平检测和蛋白表达水平检测。结果病理学检查结果显示,与DSS组相比,H.h+DSS组小鼠的淋巴细胞浸润增多,上皮缺失严重,纤维化程度加重,隐窝萎缩明显,同时炎性细胞因子白细胞介素6和肿瘤坏死因子α转录水平上调,信号转导和转录激活因子3蛋白表达水平升高。结论 H.h感染会加剧DSS诱导的小鼠结肠炎。

关键词: 肝螺杆菌, 慢性结肠炎, 葡聚糖硫酸钠, 小鼠

Abstract: Objective To investigate the effect of Helicobacter hepaticus (H.h) infection on chronic colitis induced by dextran sulfate sodium (DSS). Methods Forty male interleukin (IL)-10^-/- mice were randomly divided into control, H.h, DSS, and H.h + DSS groups. Mice in the H.h group and H.h + DSS group were infected with H.h by gavage. Five days later, the mice in DSS group and H.h + DSS group received two 7-day cycles of a 2% DSS drink with a 5-day withdrawal time between them, while the other groups received sterilized water. At the end of the experiment, all groups of mice were sacrificed and the colon of each mouse was excised, the colon length was measured, and the colon divided into three parts for histopathological examination, cytokine mRNA transcription detection, and phosphorylation detection of signal transducer and activator of transcription 3 (STAT3). Results The pathological results showed that lymphocytes infiltration, loss of epithelium, degree of fibrosis, and crypt atrophy were more obvious in the H.h + DSS group than those in the DSS group. In addition, the transcription levels of the cytokines IL-6 and tumor necrosis factor-α (TNF-α) were upregulated, while STAT3 was activated. Conclusion H.h infection can aggravate DSS-induced chronic colitis in mice.

Key words: Helicobacter hepaticus, Chronic colitis, Dextran sulfate sodium, Mice

中图分类号:

R-332
Q95-33

吴志浩, 沈宸, 殷俊, 朱立麒, 张泉. 肝螺杆菌感染对葡聚糖硫酸钠诱导小鼠慢性结肠炎模型的影响[J]. 实验动物与比较医学, 2021, 41(3): 226-231.

WU Zhihao, SHEN Chen, YIN Jun, ZHU Liqi, ZHANG Quan. Effect of Helicobacter hepaticus Infection on Chronic Colitis Induced by Dextran Sulfate Sodium[J]. Laboratory Animal and Comparative Medicine, 2021, 41(3): 226-231.

图/表 7

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肝螺杆菌感染对葡聚糖硫酸钠诱导小鼠慢性结肠炎模型的影响

Effect of Helicobacter hepaticus Infection on Chronic Colitis Induced by Dextran Sulfate Sodium

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