Cited by 327Gut microbiota and healthTryptophan and brain disordersGastrointestinal motility and disorders

Fecal microbiota transplantation from chronic unpredictable mild stress mice donors affects anxiety-like and depression-like behavior in recipient mice via the gut microbiota-inflammation-brain axis

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Li, Nannan, Wang, Qi, Wang, Yan, Sun, Anji, Lin, Yiwei, Jin, Ye, Li, Xiaobai·2019·Stress

Abstract

Recent studies have demonstrated that there are significant changes in the gut microbiota (GM) of humans with depression and animal models of depression and chronic stress. In our present study, we determined whether an alteration in GM is a decisive factor in anxiety-like and depression-like behavior and its impact on brain neurochemistry. An antibiotic cocktail was used to deplete the GM of mice before they were colonized, via fecal microbiota transplantation (FMT), by the GM of control mice or mice that had been exposed to chronic unpredictable mild stress (CUMS donors). The CUMS-donor group of mice and the mice that were colonized by their microbiota (the CUMS-recipient group) both showed higher levels of anxiety- and depression-like behavior compared to the controls. The GM community of the CUMS-donor and CUMS-recipient was distinctively different from the controls, with the CUMS group characterized by a lower relative abundance of Lactobacillus and a higher relative abundance of Akkermansia. Interestingly, FMT affected both behavior and neuroinflammation. Mice given the CUMS microbiota had significant elevations of interferon-γ (IFN-γ) and the tumor necrosis factor-alpha (TNF-α) in the hippocampus, which were accompanied by upregulated indoleamine 2,3-dioxygenase 1 (IDO1) in the hippocampus. These results suggest that GM modulates pro-inflammatory cytokines in the hippocampus through dysfunctional microbiota–gut–brain axis, exacerbating anxiety- and depression-like phenotypes.Key PointsChronic unpredictable mild stress increased anxiety- and depression-like behavior in mice.Mice colonized with gut microbiota (GM) from stressed mice showed similar behaviors.The GM composition of the donor and recipient mice was also comparable.Their relative pattern of two bacteria has been tied to neuroinflammatory activity.The results suggest a link between GM, brain function, and anxiety and depression.

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Authors
Li, N., Wang, Q., Wang, Y., Sun, A., Lin, Y., Jin, Y., & Li, X.
Affiliations
  • First Hospital of China Medical University (CN)
  • China Medical University (CN)
Corresponding author
Li, Xiaobai
Venue
Stress
Published
2019-05-24
Volume
22
Issue
5
Pages
592-602
ISSN
  • 1025-3890 (ISSN-L)
  • 1607-8888
OpenAlex
W2945891876
Cited by
327
References
55
Citations by year
2026: 29 · 2025: 67 · 2024: 75 · 2023: 59 · 2022: 44 · 2021: 38 · 2020: 9 · 2019: 6
FWCI
8.02
Type
journal article
Language
en
Open access
Locations
  • Stress (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Life Sciences › Neuroscience › Biological Psychiatry › Tryptophan and brain disorders
  • Health Sciences › Medicine › Gastroenterology › Gastrointestinal motility and disorders
Keywords
fecal microbiota transplantation, chronic unpredictable mild stress, anxiety-like behavior, depression-like behavior, gut microbiota, microbiota-gut-brain axis, neuroinflammation, hippocampus, inflammatory cytokines, interferon-gamma, TNF-α, IDO1, Akkermansia, Lactobacillus, antibiotic-induced microbiota depletion, depression
MeSH terms
Gastrointestinal Microbiome, Fecal Microbiota Transplantation, Animals, Anxiety, Brain, Depression, Disease Models, Animal, Hippocampus, Humans, Inflammation, Male, Mice, Inbred C57BL, Stress, Psychological, Cytokines, Mice, Microbiota

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