婴儿胆汁淤积的肠道菌群组成及功能变化

周建利; 王朝霞; 周少明; 张巧; 亁霞

doi:10.3969/j.issn.1001-5256.2021.01.025

婴儿胆汁淤积的肠道菌群组成及功能变化

DOI: 10.3969/j.issn.1001-5256.2021.01.025

深圳市儿童医院消化内科，广东深圳 518026

基金项目:

深圳市科技计划项目 (JCYJ20160429174706491)

利益冲突声明：本研究不存在研究者、伦理委员会成员、受试者监护人以及与公开研究成果有关的利益冲突，特此声明。

作者贡献声明：周建利、王朝霞、周少明等负责课题设计，资料分析，撰写论文; 张巧、亁霞等参与收集数据，修改论文; 王朝霞、周少明等负责拟定写作思路，指导撰写文章并最后定稿。

详细信息

作者简介:
周建利(1989—)，男，主治医师，主要从事婴儿胆汁淤积、儿童脂肪肝等研究

通信作者:
周少明，zhousm15d@aliyun.com

中图分类号: R575.6
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出版历程
- 收稿日期: 2020-07-05
- 录用日期: 2020-10-26
- 出版日期: 2021-01-20

Composition and functional change of intestinal microbiota in infantile cholestasis

Department of Gastroenterology, Shenzhen Children's Hospital, Shenzhen, Guangdong 518026, China

摘要

摘要: 目的研究胆汁淤积婴儿的肠道菌群组成及功能变化。方法纳入2014年9月—2016年2月深圳市儿童医院收治的42例胆汁淤积婴儿(胆汁淤积组)及同期32例正常对照婴儿(对照组)，收集以上婴儿的大便标本，采用鸟枪法测序了解入选婴儿肠道菌群特征，应用京都基因与基因组百科全书、eggNOG数据库探索菌群功能改变。计量资料2组间比较采用Wilcoxon秩和检验; 计数资料2组间比较采用χ²检验。得到的菌种和基因功能通路等数据用Shannon系数、Wilcoxon秩和检验和DESeq2进行计算分析，利用Cytoscape将2组的丰富菌种和相关联系直观表现出来。结果胆汁淤积组病因包括胆道闭锁11例(26.2%)，Citrin蛋白缺乏症4例(9.5%)，胆管发育不良4例(9.5%)，原因未明23例(54.8%)。2组肠道菌群组成在门水平有显著差异(Z=0.000 046，P＜0.05)，其中厚壁菌门和拟杆菌门在胆汁淤积组中显著增加; 在种水平上也有差异(Z=0.000 014，P＜0.05)，胆汁淤积组中有益菌如双歧杆菌明显减少，而潜在致病菌如韦永氏球菌和农研丝杆菌明显增多; 在功能水平上也有差异(Z=0.019 8，P＜0.05)，胆汁淤积组肠道菌群的功能明显减弱，如氨基酸代谢、糖代谢等。结论胆汁淤积婴儿肠道菌群的组成及功能发生改变，胆汁淤积婴儿肠道菌群中有益菌明显减少，潜在致病菌增多，补充双歧杆菌等有益菌可能减少潜在致病菌的产生，从而改变疾病的发展。
- 婴儿 /
- 胆汁淤积 /
- 胃肠道微生物组
Abstract: Objective To investigate the composition and functional change of intestinal microbiota in infantile cholestasis (IC). Methods A total of 42 infants with IC who were admitted to Shenzhen Children's Hospital from September 2014 to February 2016 were enrolled as IC group, and 32 normal infants during the same period of time were enrolled as control group. Fecal samples were collected, and shotgun sequencing was used to investigate the features of intestinal microbiota. The Kyoto Encyclopedia of Genes and Genomes (KEGG) and eggNOG database were used to investigate the functional changes of intestinal microbiota. The Wilcoxon rank-sum test was used for comparison of continuous data between groups, and the chi-square test was used for comparison of categorical data between groups. Shannon coefficient, the Wilcoxon Rank sum test, and DESeq2 were used to calculate and analyze the data of strains and the functional pathways of genes, and Cytoscape was used to give a visual representation of abundant strains and their association. Results As for the etiology of IC in the IC group, 11(26.2%) had biliary atresia, 4(9.5%) had Citrin deficiency, 4(9.5%) had bile duct dysplasia, and 23(54.8%) had unknown cause. There was a significant difference in the composition of intestinal microbiota at the phylum level between the two groups (Z=0.000 046, P < 0.05), and the IC group had significant increases in Firmicutes and Bacteroidetes. There were also significant differences between the two groups at the species level (Z=0.000 014, P < 0.05), and the IC group had significant reductions in the probiotic bacteria including Bifidobacterium and significant increases in the potential pathogens including Veillonella and Niastella koreensis. There was a significant difference in the function of intestinal microbiota between the two groups (Z=0.019 8, P < 0.05), and the IC group had significant reductions in the functions of intestinal microbiota such as amino acid metabolism and carbohydrate metabolism. Conclusion Changes in the composition and function of intestinal microbiota are observed in infants with IC, with a significant reduction in probiotic bacteria and a significant increase in potential pathogens, and supplementation with probiotic bacteria including Bifidobacterium can reduce the production of potential pathogens and change disease progression.
- Infant /
- Cholestasis /
- Gastrointestinal Microbiome

HTML全文

图 1 胆汁淤积组和对照组中肠道菌群多样性对比图

注：a, 门水平上基于Shannon系数计算2组样品菌的丰度分布图; b, KEGG注释后基于Shannon系数计算2组样品菌的功能分布图; c, 种水平上基于Jaccard指数计算2组对比图，黑色为胆汁淤积组，红色为对照组，可见胆汁淤积组联系更紧密; d, 种水平上基于主成分分析按照Rade4软件包描绘的图，胆汁淤积组(黑色)和对照组(红色)可以被分开，提示两组间有显著差异。

下载: 全尺寸图片幻灯片

图 2 胆汁淤积组和对照组中排名靠前的菌群组成和功能通路

注：a, 门水平上排名靠前的菌，纵坐标为所占比例; b，排名靠前的功能通路，纵坐标为所占比例。

下载: 全尺寸图片幻灯片

图 3 胆汁淤积组和对照组中较丰富的菌种交互网络图

注：由Cytoscape展示的交互网络图，农研丝杆菌GR20-10(Niastella koreensis GR20-10)、韦永氏球菌DSM 2008(Veillonella parvula DSM 2008)、加氏乳杆菌ATCC33323(Lactobacillus gasseri ATCC 33323)和沼泽红假单胞菌BisB18(Rhodopseudomonas palustris BisB18)在胆汁淤积组中极为丰富。双歧杆菌(Bifidobacterium)如长双歧杆菌(Bifidobacterium longum)、齿双歧杆菌Bd1(Bifidobacterium dentium Bd1)和短双歧杆菌ACS-071-V-Sch8b(Bifidobacterium breve ACS-071-V-Sch8b)在对照组中极为丰富，狄氏副拟杆菌ATCC 8503(Parabacteroides distasonis ATCC 8503)在对照组中也是较丰富的。

下载: 全尺寸图片幻灯片

表 1 2组患儿一般资料比较

项目	胆汁淤积组(n=42)	对照组(n=32)	统计值	P值
男/女(例)	21/21	25/7	χ²=6.11	0.013
就诊年龄(d)	90.0(29.0~300.0)	60.0(30.0~120.0)	Z=4.88	0.019
分娩方式[例(%)]			χ²=0.03	0.873
顺产	36(85.7)	27(84.4)
剖腹产	6(14.3)	5(15.6)
喂养方式[例(%)]			χ²=2.55	0.111
母乳喂养	34(81.0)	30(93.8)
人工喂养	8(19.0)	2(6.2)
TBil(μmol/L)	172.2(41.4~348.9)
DBil(μmol/L)	78.3(21.4~153.9)
IBil(μmol/L)	80.4(20.0~241.1)
胆道闭锁[例(%)]	11(26.2)
Citrin蛋白缺乏症[例(%)]	4(9.5)
胆管发育不良[例(%)]	4(9.5)
原因未明[例(%)]	23(54.8)

下载: 导出CSV

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