ArticleNutrients2021
Altered Gut Microbial Metabolites in Amnestic Mild Cognitive Impairment and Alzheimer's Disease: Signals in Host-Microbe Interplay.
Article in Nutrients, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 138 papers, 3 of them syntheses that pooled it.
What it found
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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.
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.
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Who cites it
138 citing papers in PubMed, 3 syntheses or guidelines pooled it, 212 citations in OpenAlex.
- Kynurenine pathway dysregulation in cognitive impairment and dementia: a systematic review and meta-analysis.GeroScience · 2026Pooled it
- Gut Microbiota Dysbiosis and Neuroinflammation in Alzheimer's Disease: a Systematic Review of Mechanistic Insights.Molecular neurobiology · 2026Pooled it
- Microbiota-derived metabolite signatures in Alzheimer's disease across the cognitive aging continuum: a human-focused systematic review and evidence-weighted knowledge graph.Frontiers in microbiology · 2026Pooled it
- The Effects of a Multidomain Lifestyle Intervention on Brain Function and Its Relation With Immunometabolic Markers and Intestinal Health in Older Adults at Risk of Cognitive Decline: Study Design and Baseline Characteristics of the HELI Randomized Controlled Trial.JMIR research protocols · 2025Trial
- Personalized whole-body modeling links gut microbiota to metabolic perturbations in Alzheimer's disease.Gut microbes · 2026Article
- Review
- Targeting the human gut microbiome: a comparative review of probiotics, prebiotics, synbiotics, and postbiotics.Journal of advanced research · 2026Review
- Immune dysregulation and gut microbiota: Connection to health and disease development.Neural regeneration research · 2026Article
- Article
- Article
- Omega-3 Fatty Acids and Alzheimer's Disease: Toward a New Understanding of Neuroprotective Mechanisms and Intervention Strategies.Marine drugs · 2026Review
- A perspective for alzheimer disease from gut microbiota-associated NMR-based fecal metabolomics: a study with 5XFAD mice.Metabolic brain disease · 2026Article
- Clostridium butyricum ameliorates Toxoplasma gondii-induced neuropsychiatric disorders by attenuating glial-mediated synaptic pruning via the gut-brain axis.Journal of neuroinflammation · 2026Article
- Chinese Herbal Medicine Targets Gut Microbiota to Combat Neurodegenerative Diseases: Potential Mechanisms and Clinical Implications.Journal of microbiology and biotechnology · 2026Review
- Microbiota and Alzheimer's disease: mechanistic insights from a multi-organ perspective.Translational neurodegeneration · 2026Review
- Reduced serum AHR agonistic activity reflects amyloid dysregulation in AT1 subtypes of Alzheimer's disease.Alzheimer's research & therapy · 2026Article
- Gut Dysbiosis and Microbiota-Derived Metabolites in Neurodegenerative Diseases: Molecular and Biochemical Mechanisms Along the Gut-Brain Axis.Molecules (Basel, Switzerland) · 2026Review
- The potential of microbiome modulators to improve quality of life in cancer survivors through gut microbiome-immune interactions.Frontiers in molecular neuroscience · 2026Review
- The microbiota-tryptophan-brain axis in neurodegenerative diseases: pathogenic mechanisms, disease-specific roles, and translational therapeutics.Frontiers in microbiology · 2026Review
- Gut microbiota and cognitive decline: a scoping review of microbial mechanisms and adaptive responses in dementia.Frontiers in aging neuroscience · 2026Review
78 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
15 authors at 5 institutions in 3 countries.
Funding
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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Registered trials
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.