Cited by 450Gut microbiota and healthAlzheimer's disease research and treatmentsGastrointestinal motility and disorders

Altered Gut Microbiota in a Mouse Model of Alzheimer’s Disease

Zhang, Ling, Wang, Ying, Xiayu, Xia, Shi, Changhua, Chen, Wei, Song, Nan, Fu, Xinjing, Zhou, Rui +5 more·2017·Journal of Alzheimer s Disease

Abstract

The topic of gut microbiota is currently attracting considerable interest as a potential factor in Alzheimer's disease (AD). However, the extent and time course of alterations in the gut microbiota, and their effects on AD pathology remain uncertain. Herein, we compared the fecal microbiomes and fecal short chain fatty acid composition (SCFAs) between wild-type and AD model mice at different ages under strictly controlled specific pathogen free conditions, and also conducted microscopic investigations of intestinal structures. Our results showed that the microbiota composition and diversity were perturbed and the level of SCFAs was reduced in AD mice, predicting alterations in more than 30 metabolic pathways, which may be associated with amyloid deposition and ultrastructural abnormalities in AD mouse intestine. These findings indicate that AD pathology might not only affect brain function directly, but also exacerbate cognitive deficits through reducing the level of SCFAs via alterations of gut microbiota induced by intestinal amyloid deposition. Our data may support a role of gut microbiota, and suggest a novel route for therapeutic intervention in AD.

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Crossref · 10.3233/jad-170020

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  • Gut microbiota dysbiosis has been implicated in behavioral and neurologic pathologies, such as depression, Alzheimer's disease, Parkinson's disease, and autism spectrum disorder.

    “gut microbiota dysbiosis has been implicated in behavioral and neurologic pathologies, such as depression, Alzheimer's (AD) and Parkinson's (PD) diseases and autism spectrum disorder (ASD) (9, 21, 25–27).”
  • Key neuropathological processes underlying AD might also be modulated by SCFAs.

    “Accumulating evidence has demonstrated that key neuropathological processes underlying AD might also be modulated by SCFAs (25, 34, 158, 159).”
  • The microbiota composition and diversity were perturbed and the level of SCFAs was reduced in AD mice, predicting alterations in more than 30 metabolic pathways, which may be associated with amyloid deposition and ultrastructural abnormalities in the APP/PS1 mouse model.

    “Consistent with this notion, a study by Zhang and coworkers showed that the microbiota composition and diversity were perturbed and the level of SCFAs was reduced in AD mice, predicting alterations in more than 30 metabolic pathways, which may be associated with amyloid deposition and ultrastructural abnormalities in the APP/PS1 mouse model (25).”
  • Modifications of intestinal flora impact several metabolic pathways in AD mouse models, potentially leading to cognitive defects, amyloid deposition, and intestinal abnormalities.

    “Therefore, modifications of the intestinal flora impact several metabolic pathways in AD mouse models, that could be leading to cognitive defects, amyloid deposition, and intestinal abnormalities (165).”

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Authors
Zhang, L., Wang, Y., Xiayu, X., Shi, C., Chen, W., Song, N., Fu, X., Zhou, R., Xu, Y.-F., Huang, L., Zhu, H., Han, Y., & Qin, C.
Affiliations
  • Chinese Academy of Medical Sciences & Peking Union Medical College (CN)
  • Key Laboratory of Human Diseases Comparative Medicine, Ministry of Health, Institute of Medical Laboratory Animal Science, Chinese Academy of Medical Sciences (CAMS), Beijing, China
Corresponding author
Qin, Chuan
Venue
Journal of Alzheimer s Disease
Published
2017-11-07
Volume
60
Issue
4
Pages
1241-1257
ISSN
  • 1387-2877 (ISSN-L)
  • 1875-8908
OpenAlex
W2762048636
Cited by
449
References
74
Citations by year
2026: 18 · 2025: 62 · 2024: 72 · 2023: 76 · 2022: 63 · 2021: 74 · 2020: 45 · 2019: 30 · 2018: 9
FWCI
9.38
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Alzheimer s Disease (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Gastroenterology › Gastrointestinal motility and disorders
Keywords
Alzheimer's disease, gut microbiota
MeSH terms
Gastrointestinal Microbiome, Aging, Alzheimer Disease, Animals, Disease Models, Animal, Fatty Acids, Volatile, Feces, Intestines, Male, Mice, Transgenic, Computational Biology

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