大理大学学报 ›› 2024, Vol. 9 ›› Issue (2): 24-31.

• 基础医学 • 上一篇    下一篇

感染后肠易激综合征肠道菌群及血清代谢物对内脏敏感性影响

闫 波,潘 颖,田平平   

  1. (安徽医学高等专科学校医学技术学院,合肥 230601)
  • 收稿日期:2023-09-04 修回日期:2023-09-19 出版日期:2024-02-15 发布日期:2024-02-23
  • 作者简介:闫波,教授,主要从事医学检验相关技术研究。
  • 基金资助:
    安徽省高校自然科学研究重大项目(KJ2020ZD067)

Effects of Intestinal Flora and Serum Metabolites on Visceral Sensitivity in Post-Infection Irritable Bowel Syndrome

Yan Bo, Pan Ying, Tian Pingping   

  1. (College of Medical Technology, Anhui Medical College, Hefei 230601, China)
  • Received:2023-09-04 Revised:2023-09-19 Online:2024-02-15 Published:2024-02-23

摘要: 目的:探讨感染后肠易激综合征(PI-IBS)小鼠肠道菌群与血清代谢物的变化,分析其对内脏敏感性的影响。方法:采
用旋毛虫感染法制备PI-IBS模型,利用16S rDNA测序分析PI-IBS小鼠和正常小鼠肠道微生物变化;血清代谢组学分析血清
代谢物变化;Spearman法对2组的差异代谢物和差异菌群进行关联分析。结果:16S rDNA测序结果显示mouse gut metagenome
和g_Alistipes 可能是PI-IBS小鼠的关键肠道微生物。代谢组学分析共筛选出22种组间差异代谢物,涉及16条代谢通路,主要
包括氨基酸的生物合成、半胱氨酸和蛋氨酸代谢、精氨酸生物合成、突触囊泡循环等通路。结论:肠道菌群和血清代谢物改变
参与PI-IBS内脏高敏感性的产生。

关键词: 感染后肠易激综合征, 16S rDNA测序, 肠道菌群, 代谢组学

Abstract: Objective:To investigate the changes of intestinal flora and serum metabolites in mice with post-infection irritable bowel
syndrome (PI-IBS), and analyze the effects on visceral sensitivity. Methods:The PI-IBS model was prepared by Trichinella spiralis
infection method, and the intestinal microbial changes of PI-IBS mice and normal mice were analyzed by 16S rDNA sequencing. The
changes of serum metabolites were analyzed by serum metabolomics. Spearman's correlation analysis was used to analyze the
correlation between different metabolites and different flora in the two groups. Results:The results of 16S rDNA sequencing showed
that mouse gut metagenome and g_Alistipes were the critical gut microbes in PI-IBS mice. A total of 22 intergroup differential
metabolites were identified by metabolomics analysis, involving 16 metabolic pathways, mainly including biosynthesis of amino acids,
cysteine and methionine metabolism, arginine biosynthesis, synaptic vesicle cycle and other pathways. Conclusion:Changes in
intestinal flora and serum metabolites are involved in the production of visceral hypersensitivity to PI-IBS.

Key words: post-infection irritable bowel syndrome, 16S rDNA sequencing, intestinal flora, metabolomics

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