现代医药卫生2024,Vol.40Issue(6) :913-917.DOI:10.3969/j.issn.1009-5519.2024.06.003

肝性脑病大鼠经粪便细菌移植后的肠道菌群宏基因组分析

Macrogenomic analysis of intestinal flora in rats with hepatic encephalopathy after fecal microbiota transplantation

王威巍 刘丰睿 吕朝华 申呈祥
现代医药卫生2024,Vol.40Issue(6) :913-917.DOI:10.3969/j.issn.1009-5519.2024.06.003

肝性脑病大鼠经粪便细菌移植后的肠道菌群宏基因组分析

Macrogenomic analysis of intestinal flora in rats with hepatic encephalopathy after fecal microbiota transplantation

王威巍 1刘丰睿 2吕朝华 1申呈祥1
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作者信息

  • 1. 重庆市铜梁区人民医院肝胆胰外科,重庆 402560
  • 2. 陆军军医大学第二附属医院肝胆外科,重庆 400037
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摘要

目的 建立肝性脑病大鼠模型及粪便细菌移植(FMT)模型,探索细菌移植后肝性脑病大鼠肠道菌群的改变.方法 选择30只SD大鼠,采用四氯化碳联合乙醇的方法建立肝性脑病大鼠模型.将大鼠随机分成3组,A组为正常对照组,B组为肝性脑病模型组,C组为FMT组,每组10只.B组进行同等剂量生理盐水灌胃,C组进行FMT(按200 μL/d灌胃,每毫升细菌溶液含细菌1.5×1011).每天观察大鼠生存情况.收集大鼠肠道粪便进行宏基因组测序.结果 实验过程中大鼠共死亡9只,A组无死亡.FMT前后,C组大鼠移植后体重明显增加.通过宏基因组测序,发现C组较B组可有效地改善菌种的多样性和丰度;与A组比较,B、C组中变形菌门含量显著升高,拟杆菌门丰度显著降低.结论 FMT可以改变肝性脑病大鼠肠道菌群的结构.

Abstract

Objective To establish a rat model of hepatic encephalopathy and fecal microbiota trans-plantation(FMT)model,and explore the effects of bacterial transplantation on intestinal flora in rats with he-patic cirrhosis.Methods A total of 30 SD rats were selected and rat liver models were established using car-bon tetrachloride+ethyl alcohol method.The rats were randomly divided into three groups:group A as the normal control group,group B as the hepatic encephalopathy model group,and group C as the FMT group,with 10 rats in each group.Group B was given the same dose of normal saline,and group C was given FMT transplantation(200 μL/d.bacteria 1.5×1011 per mL of bacterial solution).The survival of the rats was observed daily.The intestinal feces of rats were collected for metagenomic sequencing.Results A total of nine rats died during the experiment,while group A did not die.Before and after FMT,the body weight of rats in group C increased significantly after transplanta-tion.Through metagenomic sequencing,it was found that group C could effectively improve the diversity and abun-dance of bacteria compared with group B.Compared with group A,the content of Proteobacteria in group B and C was significantly increased,while the abundance of Bacteroides was significantly decreased.Conclusion FMT can alter the structure of intestinal flora in rats with hepatic encephalopathy.

关键词

粪便细菌移植/肝性脑病/宏基因组/肠道菌群/大鼠

Key words

Fecal microbiota transplantation/Hepatic encephalopathy/Metagenome/Intestinal flora/Rats

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基金项目

重庆市科卫联合医学项目(2022MSXM044)

出版年

2024
现代医药卫生
重庆市卫生信息中心

现代医药卫生

影响因子:0.758
ISSN:1009-5519
参考文献量19
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