Cited by 227Gut microbiota and healthDementia and Cognitive Impairment ResearchAlzheimer's disease research and treatments

Altered Gut Microbial Metabolites in Amnestic Mild Cognitive Impairment and Alzheimer’s Disease: Signals in Host–Microbe Interplay

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Wu, Li, Han, Yuqiu, Zheng, Zhipeng, Peng, Guoping, Liu, Ping, Yue, Siqing, Zhu, Shuai, Chen, Jun +7 more·2021·Nutrients

Abstract

Intimate metabolic host–microbiome crosstalk regulates immune, metabolic, and neuronal response in health and disease, yet remains untapped for biomarkers or intervention for disease. Our recent study identified an altered microbiome in patients with pre-onset amnestic mild cognitive impairment (aMCI) and dementia Alzheimer’s disease (AD). Thus, we aimed to characterize the gut microbial metabolites among AD, aMCI, and healthy controls (HC). Here, a cohort of 77 individuals (22 aMCI, 27 AD, and 28 HC) was recruited. With the use of liquid-chromatography/gas chromatography mass spectrometry metabolomics profiling, we identified significant differences between AD and HC for tryptophan metabolites, short-chain fatty acids (SCFAs), and lithocholic acid, the majority of which correlated with altered microbiota and cognitive impairment. Notably, tryptophan disorders presented in aMCI and SCFAs decreased progressively from aMCI to AD. Importantly, indole-3-pyruvic acid, a metabolite from tryptophan, was identified as a signature for discrimination and prediction of AD, and five SCFAs for pre-onset and progression of AD. This study showed fecal-based gut microbial signatures were associated with the presence and progression of AD, providing a potential target for microbiota or dietary intervention in AD prevention and support for the host–microbe crosstalk signals in AD pathophysiology.

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Authors
Wu, L., Han, Y., Zheng, Z., Peng, G., Liu, P., Yue, S., Zhu, S., Chen, J., Lv, H., Shao, L., Sheng, Y., Wang, Y., Li, L., Li, L., & Wang, B.
Affiliations
  • First Affiliated Hospital Zhejiang University (CN)
  • Zhejiang University of Technology (CN)
  • Nanyang Technological University (SG)
  • University of Alberta (CA)
  • Chinese Academy of Medical Sciences & Peking Union Medical College (CN)
Corresponding author
Wang, Baohong
Venue
Nutrients
Publisher
MDPI AG
Published
2021-01-14
Volume
13
Issue
1
Pages
228
ISSN
2072-6643 (ISSN-L)
OpenAlex
W3120104891
Cited by
227
References
54
Citations by year
2026: 23 · 2025: 48 · 2024: 53 · 2023: 53 · 2022: 36 · 2021: 14
FWCI
12.23
Type
journal article
Language
en
Open access
Locations
  • Nutrients (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • DR-NTU (Nanyang Technological University) (submittedVersion, cc-by)
Funders
  • Major Program of National Natural Science Foundation of China (81790633, 81790630)
  • CAMS Innovation Fund for Medical Sciences (2019-I2M-5-045)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
Keywords
Alzheimer's disease, amnestic mild cognitive impairment, gut microbiota, gut microbiota metabolites, tryptophan metabolites, indole-3-pyruvic acid, short-chain fatty acids, lithocholic acid, host-microbe crosstalk, fecal metabolomics, biomarkers, disease progression, dementia
MeSH terms
Gastrointestinal Microbiome, Aged, Aged, 80 and over, Alzheimer Disease, Bacteria, Fatty Acids, Volatile, Feces, Female, Humans, Male, Middle Aged, Tryptophan, Metabolome, Cognitive Dysfunction

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