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食品与发酵工业  2020, Vol. 46 Issue (10): 44-52    DOI: 10.13995/j.cnki.11-1802/ts.023285
  研究报告 本期目录 | 过刊浏览 | 高级检索 |
鼠李糖乳杆菌FZJTZ46L6通过影响肠道内短链脂肪酸的水平缓解小鼠由葡聚糖硫酸钠导致的结肠炎
郑雨星, 朱慧越, 焦婷, 杨树荣, 刘倩, 王刚*, 赵建新, 张灏, 陈卫
(江南大学 食品学院,江苏 无锡,214122)
Lactobacillus rhamnosus FZJTZ46L6 alleviates colitis induced by dextran sulfate sodium in mice through short-chain fatty acids regulation
ZHENG Yuxing, ZHU Huiyue, JIAO Ting, YANG Shurong, LIU Qian, WANG Gang*, ZHAO Jianxing, ZHANG Hao, CHEN Wei
(School of Food Science and Technology, Jiangnan University, Wuxi 214122, China)
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摘要 该文通过葡聚糖硫酸钠(dextran sulfate sodium,DSS)诱导的结肠炎小鼠模型,评价2株鼠李糖乳杆菌对小鼠结肠炎的缓解效果并探究其作用机制。结果显示,鼠李糖乳杆菌FZJTZ46L6对DSS引起的小鼠结肠炎具有显著的缓解作用,且效果优于FNMGEL5-1。FZJTZ46L6能够显著缓解DSS引起的小鼠体重下降,改善粪便性状和便血情况,且显著改善结肠黏膜损伤和炎症产生。而FNMGEL5-1虽然在一定程度上缓解了DSS引起的疾病症状,但是对于结肠炎症浸润和病理损伤没有改善作用。与模型组相比,鼠李糖乳杆菌FZJTZ46L6干预后显著提高结肠紧密连接相关蛋白基因转录水平,降低促炎因子TNF-α、IL-1β、IL-6和IFN-γ含量,显著增加小鼠粪便中短链脂肪酸含量,显著提高丙酸和丁酸产生菌属Coprococcus丰度并增加肠道菌群多样性。
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郑雨星
朱慧越
焦婷
杨树荣
刘倩
王刚
赵建新
张灏
陈卫
关键词:  鼠李糖乳杆菌  结肠炎  短链脂肪酸  肠道菌群    
Abstract: In this study, DSS-induced colitis mice were used to investigate the effects of two Lactobacillus rhamnosus strains on disease and their potential mechanisms. C57BL/6J mice with colitis induced by 25 g/L DSS were administered with L. rhamnosus strains for 28 d. The results showed that L. rhamnosus FZJTZ46L6 alleviated DSS-induced colitis significantly and more effectively than that by FNMGEL5-1. L. rhamnosus FZJTZ46L6 alleviated the body weight loss caused by DSS, improved stool consistency and relieved bloody stool, and significantly improved the colonic mucosal damage in mice. Although FNMGEL5-1 alleviated the symptoms of diseases caused by DSS, it showed no effect on colonic inflammation and pathological damage. In addition, compared with the model group, L. rhamnosus FZJTZ46L6 significantly increased the transcription level of tight junction proteins in colon and reduced pro-inflammatory cytokines such as TNF-α、IL-1β、IL-6 and IFN-γ in colon. Besides, the content of short-chain fatty acids in the feces of mice was also increased significantly. The abundance of genera Coprococcus, the propionate and butyrate-producing bacteria, were elevated together with the diversity of gut microbiota.
Key words:  Lactobacillus rhamnosus    colitis    short-chain fatty acids    gut microbiota
收稿日期:  2020-01-07                出版日期:  2020-05-25      发布日期:  2020-06-17      期的出版日期:  2020-05-25
基金资助: 国家自然科学基金项目(31671839)
作者简介:  硕士研究生(王刚副教授为通讯作者,E-mail:wanggang@jiangnan.edu.cn)
引用本文:    
郑雨星,朱慧越,焦婷,等. 鼠李糖乳杆菌FZJTZ46L6通过影响肠道内短链脂肪酸的水平缓解小鼠由葡聚糖硫酸钠导致的结肠炎[J]. 食品与发酵工业, 2020, 46(10): 44-52.
ZHENG Yuxing,ZHU Huiyue,JIAO Ting,et al. Lactobacillus rhamnosus FZJTZ46L6 alleviates colitis induced by dextran sulfate sodium in mice through short-chain fatty acids regulation[J]. Food and Fermentation Industries, 2020, 46(10): 44-52.
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http://sf1970.cnif.cn/CN/10.13995/j.cnki.11-1802/ts.023285  或          http://sf1970.cnif.cn/CN/Y2020/V46/I10/44
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