中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (49): 7411-7417.doi: 10.3969/j.issn.2095-4344.2016.49.017

• 消化系统损伤动物模型 Animal models of digestive damage • 上一篇    下一篇

培养福氏志贺菌感染大鼠回肠组织病理学的特点

罗夙医1,王玺赟2,李劲涛3   

  1. 昆明医科大学,1基础医学院病原生物学与免疫学系,22012级麻醉班, 3基础医学院神经科学研究所,云南省昆明市  650500
  • 收稿日期:2016-09-02 出版日期:2016-11-30 发布日期:2016-11-30
  • 通讯作者: 李劲涛,博士,副教授,硕士生导师,昆明医科大学基础医学院神经科学研究所,云南省昆明市 650500
  • 作者简介:罗夙医,女,1983年生,云南省永善县人,2012年大理大学毕业,硕士,助教,主要从事微生物学教学及热带病学科研研究工作。
  • 基金资助:

    云南省科技厅-昆明医科大学联合专项科研基金面上项目(2015FB008)

Histopathological features of the rat ileum after Shigella flexneri infection

Luo Su-yi1, Wang Xi-yun2, Li Jin-tao3   

  1. 1Department of Pathogen Biology and Immunology, School of Clinical Medicine, 2Department of Anesthesiology in 2012, 3Institute of Neuroscience, School of Clinical Medicine, Kunming Medical University, Kunming 650500, Yunnan Province, China
  • Received:2016-09-02 Online:2016-11-30 Published:2016-11-30
  • Contact: Li Jin-tao, M.D., Associate professor, Master’s supervisor, Institute of Neuroscience, School of Clinical Medicine, Kunming Medical University, Kunming 650500, Yunnan Province, China
  • About author:Luo Su-yi, Master, Teaching assistant, Department of Pathogen Biology and Immunology, School of Clinical Medicine, Kunming Medical University, Kunming 650500, Yunnan Province, China
  • Supported by:

    the General Program of the Joint Research Foundation of Yunnan Provincial Ministry of Science and Technology-Kunming Medical University, No. 2015FB008

摘要:

文章快速阅读:


文题释义:
福氏志贺菌:福氏志贺菌(S.flexneri)属于人类细菌性痢疾病原菌,志贺菌属(Shigella),俗称痢疾杆菌的一种。1989年由Shiga首先分离并以他命名。志贺菌属根据菌体O抗原分为四群40余血清型及亚型,即A、B、C、D四群。B群即福氏志贺菌,有13个血清型,各型之间有交叉反应。
病理学:是研究人体疾病发生的原因、发生机制、发展规律以及疾病过程中机体的形态结构、功能代谢变化和病变转归的一门基础医学科学。正因如此,病理学一直被视为是基础医学与临床医学之间的“桥梁学科”,充分表明了它在医学中不可替代的重要作用,这是由病理学的性质和任务所决定的。
摘要
背景:
志贺氏菌属是引起细菌性痢疾的主要致病菌,细菌性痢疾是夏秋季节最常见的肠道传染病之一。
目的:分析福氏志贺菌感染大鼠回肠组织的病理学特征。
方法:同窝别清洁级SD雄性大鼠30只。随机分为非链霉素处理组、链霉素处理组、对照组,每组各10只。链霉素处理组50 g/L硫酸链霉素灌胃;非链霉素处理组用生理盐水灌胃;对照组不做任何处理。建立大鼠菌群紊乱模型后,非链霉素处理组、链霉素处理组用福氏志贺菌(9×108) CFU/mL灌胃建立大鼠痢疾模型,14 d后采用苏木精-伊红染色观察福氏志贺菌感染大鼠回肠组织的病理学特征。
结果与结论:①福氏志贺菌感染大鼠远端回肠和直肠出现典型的菌痢病变,表现为黏膜出血、水肿,中性粒细胞浸润,杯状细胞破坏、出血,并出现疾病特征性的假膜性炎:黏膜表层坏死,有大量纤维素渗出,后者与坏死组织、红细胞、白细胞等一起构成假膜;脱落后的肠黏膜,形成形状不一的溃疡,溃疡浅表,很少超过黏膜下层;②各组大鼠出现症状时间、福氏志贺菌攻击前后大鼠体温值及体质量差异无显著性意义(P > 0.05);③结果说明,福氏志贺菌感染大鼠远端回肠和直肠租住出现菌痢典型的组织病理表现,可成功作为动物模型进行病因、发病机制和治疗等深入科研研究。

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: 0000-0002-1661-9305(罗夙医)

关键词: 实验动物, 消化系统损伤与修复模型, 福氏志贺菌感染, 远端回肠, 直肠, 组织病理

Abstract:

BACKGROUND: Bacillary dysentery is one of the most common enteric infectious diseases in summer and autumn that is mainly caused by Shigella.
OBJECTIVE: To analyze the pathological features of the rat ileum after Shigella flexneri infection.
METHODS: Totally 30 male Sprague-Dawley rats were enrolled and equally randomized into three groups. Rats in non-streptomycin and streptomycin groups were firstly treated with normal saline and 50 g/L streptomycin sulphate via gastric lavage, and then given gastric lavage of 9×108 CFU/mL Shigella flexneri. Rats were given no any treatment as control group. 14 days later, morphological changes of the rat ileum were observed through hematoxylin-eosin staining.
RESULTS AND CONCLUSION: (1) After Shigella flexneri infection, the rat distal ileum and rectum were characterized by mucosal edema and hemorrhage, neutrophilic granulocyte exudation, pseudomembrane formation and destruction of goblet cells with hemorrhage. There were obvious fibrin exudation on the necrotic mucosal surface that constituted the pseudomembrane with necrotic debris, leukocytes and erythrocytes. After mucosa defulvium, non-uniform and superficial ulcers were mainly visible at the mucosa. (2) The occurrence time of positive systems, temperature and body mass before and after Shigella flexneri infection showed no significant differences among rats (P > 0.05). (3) These results suggest that the rat distal ileum and rectum after Shigella flexneri infection present the characteristic morphological futures of bacillary dysentery; therefore, it can be used as the animal model to undergo in-depth research about the etiology, pathogenesis and treatment of bacillary dysentery.

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: Shigella dysenteriae, Colon, Pathology, Tissue Engineering

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