畜牧兽医学报 ›› 2024, Vol. 55 ›› Issue (10): 4720-4734.doi: 10.11843/j.issn.0366-6964.2024.10.042

• 临床兽医 • 上一篇    下一篇

粪菌移植治疗犊牛无特异病原性腹泻和细菌性腹泻的疗效及其肠道菌群变化

杨作斌1(), 史晋成1, 马紫薇1, 陈如龙2, 舒展3, 李鑫1,3, 王金泉1, 钟旗4, 马雪连1,*(), 姚刚1,*()   

  1. 1. 新疆农业大学动物医学学院, 乌鲁木齐 830052
    2. 新疆汗庭牧元养殖科技有限责任公司, 博乐 833407
    3. 新疆阿勒泰地区动物疾控中心, 阿勒泰 836500
    4. 新疆畜牧科学院兽医研究所, 乌鲁木齐 830026
  • 收稿日期:2023-11-01 出版日期:2024-10-23 发布日期:2024-11-04
  • 通讯作者: 马雪连,姚刚 E-mail:411096297@qq.com;1016685239@qq.com;yg@xjau.edu.cn
  • 作者简介:杨作斌(1997-), 男, 甘肃天祝人, 硕士生, 主要从事反刍幼畜生长发育与调控研究, E-mail: 411096297@qq.com
  • 基金资助:
    自治区创新团队项目(2023D14018);自治区重大科技专项(2023A02007-2)

The Therapeutic Effect of the Fecal Microbiota Transplantation on Calf Non-specific Pathogenic Diarrhea and Bacterial Diarrhea in Association with Their Gut Microbiota Changes

Zuobin YANG1(), Jincheng SHI1, Ziwei MA1, Rulong CHEN2, Zhan SHU3, Xin LI1,3, Jinquan WANG1, Qi ZHONG4, Xuelian MA1,*(), Gang YAO1,*()   

  1. 1. College of Veterinary Medicine, Xinjiang Agricultural University, Urumqi 830052, China
    2. Xinjiang Hanting Muyuan Breeding Technology Company Limited, Bole 833407, China
    3. Animal Disease Control and Prevention Center in Altay Prefecture, Altay 836500, China
    4. Xinjiang Academy of Animal Science, Urumqi 830026, China
  • Received:2023-11-01 Online:2024-10-23 Published:2024-11-04
  • Contact: Xuelian MA, Gang YAO E-mail:411096297@qq.com;1016685239@qq.com;yg@xjau.edu.cn

摘要:

旨在比较粪菌移植(Fecal microbiota transplantation,FMT)治疗犊牛无特异病原性腹泻和细菌性腹泻的疗效和肠道菌群变化。选择8头健康新生犊牛作为健康对照组(Health,H),再选择具有临床腹泻症状的新生犊牛24头,经腹泻相关病原检测,16头无腹泻相关病原感染的腹泻犊牛分为无特异病原腹泻组(Diarrhea,D),8头感染产志贺毒素大肠埃希菌(Shiga toxin-producing E.coli,STEC)的腹泻犊牛作为STEC腹泻组(STEC-Diarrhea,SD)。各组犊牛平均日龄为(14.8±6.1)d。通过腹泻病原和腹泻症状筛查选择供体犊牛并制备粪菌液,口服粪菌液(每头250 mL,含40 g单一供体粪便)治疗腹泻犊牛,根据布里斯托粪便分型法(Bristol Stool Scale, BSS)评估治疗有效性。治疗后D组犊牛命名为无特异病原腹泻治疗组(FMT-D),SD组犊牛为STEC腹泻治疗组(FMT-SD)。记录治愈天数和日增重,测定犊牛生理常值、血常规、细胞因子及免疫球蛋白。采集各组犊牛直肠粪便进行16S rRNA基因测序,分析其肠道菌群变化。结果显示,经FMT治疗,D组和SD组犊牛的布里斯托粪便分型分别从6~7型极显著下降为4~5型(P < 0.000 1),下降后的分型值与H组无差异(P>0.05)。FMT-D组和FMT-SD组的平均治愈天数(4.9和4.4)无显著差异(P>0.05)。治疗后150 d,FMT-D组的犊牛日增重与H组无显著差异(P>0.05),而FMT-SD组的日增重显著低于H组(P < 0.05)。D组和SD组犊牛血液IL-1β、IL-6和IL-10浓度极显著高于H组(P < 0.01),经FMT治疗后均下降至H组水平。D组和SD组犊牛粪便中分泌型免疫球蛋白A极显著低于H组(P < 0.001),且D组IL-22显著低于H组(P < 0.05),经FMT治疗后均上升,与H组水平无差异(P>0.05)。D组和SD组犊牛肠道菌群的丰富度和多样性均显著低于H组(P < 0.05),经FMT治疗后上升至H组水平。D组和SD组犊牛肠道菌群结构β多样性与H组差异极显著(P < 0.001),梭杆菌门的相对丰度均极显著高于H组(P < 0.001),志贺菌属、Tyzzerella和栖粪杆菌属、[Ruminococcus]_gnavus_group、丁酸球菌属和柯林斯氏菌属、梭杆菌属相对丰度显著高于H组(P < 0.05),经过FMT治疗,上述菌门和菌属相对丰度均下降至H组水平。而D组和SD组犊牛的MuribaculaceaeRikenellaceae_RC9_gut_group、[Eubacterium]_coprostanoligenes_group、鼠肠单胞菌属、Clostridia_UCG_014、Subdoligranulum和布雷兹纳克氏菌属相对丰度极显著低于H组(P < 0.01)。经过FMT治疗,上述菌属的相对丰度均上升且与H组无显著差异(P>0.05)。本研究表明,FMT对无特异病原性腹泻和细菌性的犊牛腹泻均有显著治疗效果。FMT治疗显著降低了腹泻犊牛肠道菌群中具有致病性菌属的相对丰度,同时增加了潜在益生菌属的相对丰度,肠道菌群的组成结构趋向健康,犊牛免疫功能显著增强。FMT治疗可能对犊牛的增重和生长产生长期有益影响。但FMT对这两种腹泻犊牛肠道菌群的恢复过程中存在一定差异。

关键词: 犊牛, 腹泻, 粪菌移植, 效果评价, 肠道菌群

Abstract:

The aim of this study was to compare the therapeutic efficacy and the changes of gut microbiota by faecal microbiota transplantation (FMT) treatment between non-specific pathogenic diarrhea and the bacterial diarrhea in calves. In the study, 8 healthy newborn calves were selected as the health (Health, H) group, 24 newborn calves with clinical symptoms of diarrhea were selected, in which 16 diarrheic calves without diarrheic related pathogens were assigned to the non-specific pathogenic diarrhea (Diarrhea, D) group, and the other 8 diarrheic calves with STEC infection were assigned to the STEC diarrhea (STEC-Diarrhea, SD) group after diarrhea-associated pathogens detection. The average age of all calves was 14.8±6.1 days. After FMT group D was named FMT-D and group SD was named FMT-SD. Donor calves were screened by clinical symptoms of diarrhea with pathogenic test, and then the fecal microbiota solution was prepared for oral treatment (250 mL each calf, contains 40 g feces of single donor). Bristol Stool Scale (BSS) was used to assess the effectiveness of FMT. The healing day and the daily gain (DG) were recorded, and calves' blood physiological parameters and inflammatory cytokines were determined. Rectal feces were collected for 16S rRNA gene sequencing to analyze the changes of gut microbiota. The results showed that after FMT, BSS of calves in group D and SD was extremely decreased (P < 0.0001) from type 6-7 to type 4-5, and after decline was not significantly different from that in group H (P>0.05). There was no significant difference in the healing day between group FMT-D and group FMT-SD (P>0.05). At day 150 after FMT, DG of FMT-D group was not significantly different from that of group H (P>0.05), whereas DG of group FMT-SD was still significantly lower than that of group H (P < 0.05). IL-1β and IL-6 as well as IL-10 were extremely higher in group D and group SD than those in group H (P < 0.01), and after FMT they were decreased to the level of H group (P>0.05); Secretory immunoglobulin A was extremely lower in group D and group SD than that in group H (P < 0.001), and IL-22 was significantly lower in group D than that in group H (P < 0.05), which were both increased to the level of group H after FMT (P>0.05). The richness and diversity of gut microbiota in group D and group SD were significantly lower than that in group H (P < 0.01), while increased after FMT. There were extremely significantly different gut microbiota structure of group D and group SD from that of group H (P < 0.001). The relative abundance (RA) of Fusobacteriota was extremely higher in both group D and group SD than that in group H (P < 0.001), the RA of genera Escherichia_Shigella, Tyzzerella, Faecalibacterium, Fusobacterium, [Ruminococcus]_gnavus_group, Butyricicoccus, Collinsella and Prevotella was significantly higher in group D and group SD than those in group H (P < 0.05), After FMT they were decreased to the level of group H. Moreover, The RA of genera Muribaculaceae, Rikenellaceae_RC9_gut_group, [Eubacterium]_coprostanoligenes_group, Intestinimonas, Clostridia_UCG_014, Subdoligranulum and Breznakia was extremely reduced in group D and group SD in comparison with group H (P < 0.01), then increased in both group FMT-D and group FMT-SD after FMT, which was reached to the level of H group (P>0.05). FMT treatment has a significant therapeutic effect on both aforementioned kinds of diarrhea in calves via reducing the relative abundance of some pathogenic genera, while increasing that of some potentially probiotic ones in the gut microbiota of diarrheic calves, thus resulting in the composition and structure of the gut microbiota tended to be healthier, and host immune function is enhanced, FMT treatment may have long-term beneficial impact on calves' gain and grows. However, the gut microbiota restoration by FMT treatment between these two kinds of diarrhea calves still remains some difference.

Key words: calves, diarrhea, fecal microbiota transplantation, effect evaluation, gut microbiota

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