• 1. The First Affiliated Hospital of Guangzhou Medical University, State Key Laboratory of Respiratory Disease, National Center for Respiratory Medicine, Guangzhou, Guangdong 510120, P. R. China;
  • 2. The GMU-GIBH Joint School of Life Sciences, Guangzhou Medical University, Guangzhou, Guangdong 510120, P. R. China;
  • 3. Basic Medical School, Guangzhou Medical University, Guangzhou, Guangdong 510120, P. R. China;
RAN Pixin, Email: pxran@gzhmu.edu.cn
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Objective To establisht a gut microbiota mice model for chronic obstructive pulmonary disease (COPD) with fecal microbiota transplantation (FMT) and its evaluation.Methods The mice received FMT from healthy individuals, COPD Ⅰ-Ⅱ subjects, or COPD Ⅲ–Ⅳ subjects. After microbiota depletion, the FMT was performed by a single oral administration of 100 μL per mouse every other day, for a total of 14 times in 28 days. On the 29th day, the peripheral blood mononuclear cells were analyzed, the gut microbiota of mice before and after FMT was analyzed by 16S rRNA sequencing, and the mice model were evaluated.Results The operational taxonomic units, Chao 1 and Shannon indexes of mice all decreased significantly after antibiotic treatment (P<0.001), but increased significantly after FMT from healthy individuals, COPD Ⅰ-Ⅱ subjects, or COPD Ⅲ–Ⅳ subjects (P<0.05 or P<0.01). The abundance of Firmicutes, Proteobacteria and Actinobacteria in the guts of the mice in the healthy human FMT group, COPD Ⅰ-Ⅱ FMT group and COPD Ⅲ-Ⅳ FMT group were significantly different from those of the control group who only received phosphate buffer saline instead of FMT (P<0.05 or P<0.01). The auxiliary T lymphocytes and cytotoxic T lymphocytes were higher, but B lymphocytes decreased in the peripheral blood of the mice in the COPD Ⅰ-Ⅱ FMT group and COPD Ⅲ-Ⅳ FMT group (P<0.05 or P<0.01).Conclusion FMT can successfully establish a COPD gut microbiota research model.

Citation: LI Naijian, DAI Zhouli, CHEN Chiyong, ZHANG Jiahuan, HE Fang, LI Jing, ZHOU Yumin, LI Bing, RAN Pixin. Establishment of COPD gut microbiota model with fecal microbiota transplantation and its evaluation. Chinese Journal of Respiratory and Critical Care Medicine, 2021, 20(7): 465-471. doi: 10.7507/1671-6205.202104004 Copy

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