Evidence map›Paper›PMID 37673907›Full record

ArticleNature communications2023

Bacteroides Fragilis in the gut microbiomes of Alzheimer's disease activates microglia and triggers pathogenesis in neuronal C/EBPβ transgenic mice.

Yiyuan Xia, Yifan Xiao, Zhi-Hao Wang, Xia Liu, Ashfaqul M Alam, John P Haran, Beth A McCormick, Xiji Shu, Xiaochuan Wang, Keqiang Ye

Open access · goldAbstract read
In one paragraph

Article in Nature communications, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 81 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
81citing papers in PubMed, 5 pooled it
13.4field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

81 citing papers in PubMed, 5 syntheses or guidelines pooled it, 87 citations in OpenAlex.

  1. Pooled it
  2. Nutrients · 2025
    Pooled it
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  6. Review
  7. The microbiota-proteostasis axis: implications in neurodegenerative diseases.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2026
    Review
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21 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors at 5 institutions in 2 countries.

Yiyuan Xia *Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA, 30322, USA.ORCID http://orcid.org/0000-0001-7833-0497
Yifan Xiao *School of Medicine, Jianghan University, Wuhan, HB, 430056, China.
Zhi-Hao WangDepartment of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA, 30322, USA.
Xia LiuDepartment of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA, 30322, USA.
Ashfaqul M AlamUniversity of Kentucky, Microbiology, Immunology & Molecular Genetics Office - MN 376, Medical Science Building, 800 Rose Street, Lexington, KY, USA.
John P HaranDepartment of Emergency Medicine, University of Massachusetts Chan Medical School, Worcester, MA, USA.
Beth A McCormickMicrobiology and Physiological Systems, University of Massachusetts Chan Medical School, Worcester, MA, USA.
Xiji ShuSchool of Medicine, Jianghan University, Wuhan, HB, 430056, China. xijishu@jhun.edu.cn.
Xiaochuan WangDepartment of Pathophysiology, School of Basic Medicine, Key Laboratory of Education Ministry of China/Hubei Province for Neurological Disorders, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China. wxch@mails.tjmu.edu.cn.ORCID http://orcid.org/0000-0001-8207-0042
Keqiang YeDepartment of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA, 30322, USA. kq.ye@siat.ac.cn.ORCID http://orcid.org/0000-0002-7657-8154
Emory University · USJianghan University · CNUniversity of Massachusetts Chan Medical School · USNantong University · CNUniversity of Kentucky · US

Funding

Implementing a Maternal health and PRegnancy Outcomes Vision for Everyone (IMPROVE)UL1TR002378 · NCATS · EMORY UNIVERSITY · PI Andres J Garcia, Elizabeth O. Ofili · 2017 to 2026
$92.1M
Understanding the role of anti-apolipoprotein A-I antibodies in atherosclerotic cardiovascular diseaseP20GM130456 · NIGMS · UNIVERSITY OF KENTUCKY · PI Jon Scott Thorson · 2020 to 2026
$18.7M
ApoE4 and C/EBP: Mutually Regulate Each Other in Alzheimer's DiseaseR01AG065177 · NIA · EMORY UNIVERSITY · PI BENIAN, GUY MARTIN · 2020 to 2024
$2.3M
Understanding the Microbiome-gut-brain axisn Alzheimer disease and its Role in Cognitive DeclineR01AG067483 · NIA · UNIV OF MASSACHUSETTS MED SCH WORCESTER · PI John Patrick Haran · 2024 to 2026
$1.8M
NCATS NIH HHS UL1 TR002378NIA NIH HHS R01 AG065177NIA NIH HHS R01 AG067483NIGMS NIH HHS P20 GM130456
6 · The paper itself

Abstract

Gut dysbiosis contributes to Alzheimer's disease (AD) pathogenesis, and Bacteroides strains are selectively elevated in AD gut microbiota. However, it remains unknown which Bacteroides species and how their metabolites trigger AD pathologies. Here we show that Bacteroides fragilis and their metabolites 12-hydroxy-heptadecatrienoic acid (12-HHTrE) and Prostaglandin E2 (PGE2) activate microglia and induce AD pathogenesis in neuronal C/EBPβ transgenic mice. Recolonization of antibiotics cocktail-pretreated Thy1-C/EBPβ transgenic mice with AD patient fecal samples elicits AD pathologies, associated with C/EBPβ/Asparaginyl endopeptidase (AEP) pathway upregulation, microglia activation, and cognitive disorders compared to mice receiving healthy donors' fecal microbiota transplantation (FMT). Microbial 16S rRNA sequencing analysis shows higher abundance of proinflammatory Bacteroides fragilis in AD-FMT mice. Active components characterization from the sera and brains of the transplanted mice revealed that both 12-HHTrE and PGE2 activate primary microglia, fitting with poly-unsaturated fatty acid (PUFA) metabolites enrichment identified by metabolomics. Strikingly, recolonization with live but not dead Bacteroides fragilis elicited AD pathologies in Thy1-C/EBPβ transgenic mice, so did 12-HHTrE or PGE2 treatment alone. Collectively, our findings support a causal role for Bacteroides fragilis and the PUFA metabolites in activating microglia and inducing AD pathologies in Thy1- C/EBPβ transgenic mice.

Indexed as

Alzheimer DiseaseBacterial InfectionsGastrointestinal MicrobiomeAnimalsBacteroidesBacteroides fragilisDinoprostoneHydroxy AcidsMiceMice, TransgenicMicrogliaRNA, Ribosomal, 16SDinoprostoneHydroxy AcidsRNA, Ribosomal, 16S

Identifiers

PMID37673907
PMCPMC10482867
OpenAlexW4386484750

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.