ReviewMetabolites2023
Tryptophan Metabolism and Gut Microbiota: A Novel Regulatory Axis Integrating the Microbiome, Immunity, and Cancer.
Review in Metabolites, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 133 papers, 1 of them a synthesis that pooled 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.
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.
Who cites it
133 citing papers in PubMed, 1 synthesis or guideline pooled it, 147 citations in OpenAlex.
- Gut microbiome and bone health: update on mechanisms, clinical correlations, and possible treatment strategies.Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2025Pooled it
- Targeted Restoration of the Microbial Tryptophan Oxidative Pathway Ameliorates Autism-Like Behavioral and Synaptic Deficits.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Unraveling the Mechanistic Insights ofNutrients · 2026Review
- Novel insight into the effects of the metabolites from gut microbiota in both unmedicated depressive adolescents and mice: key roles of indole derivatives-aryl hydrocarbon receptor signaling in neurogenesis and microglial homeostasis.Molecular psychiatry · 2026Article
- Study of the Formation of Neuromodulatory Compounds in Fermented Products Based on Triticale, Naked Oat, and Amaranth Grains.Foods (Basel, Switzerland) · 2026Article
- Metabolite Signatures in Postpartum Prediabetes and Diabetes Among Indian Women With Prior Gestational Diabetes Mellitus: Insights From CHIP-F Study.Diabetes/metabolism research and reviews · 2026Article
- Tryptophan supplementation in low-protein diets of sows during late gestation and lactation: Effects on sow performance and piglet growth.Animal nutrition (Zhongguo xu mu shou yi xue hui) · 2026Article
- Time-Resolved Epithelial Responses to ETEC-K88 Reveal Tryptophan-Linked Protection in IPEC-J2 Cells and Strain-Specific Intestinal Injury in Mice.Animals : an open access journal from MDPI · 2026Article
- Dietary Tryptophan Allocation in Depression: Serotonin-Kynurenine Balance, Microbial Indole Pathways, and Inflammatory Phenotypes.Nutrients · 2026Review
- Multi-Omics Analysis Identifies Tryptophan Metabolism and Glycolysis as Potential Pathways Involved in the Protective Effects of Tormentic Acid Against Metabolic Associated Fatty Liver Disease.Pharmacology research & perspectives · 2026Article
- Gut Microbiota-Targeted Nutrition for Healthy Aging: Mechanistic Roles of Polyphenols and Dietary Fiber in Geroscience.Nutrients · 2026Review
- Insights into the Relevance of the Interaction between Colorectal Cancer and Gut Microbiota-Derived Metabolites.Journal of cancer prevention · 2026Review
- Remodeling of Gut Microbiota Metabolic Function Is Associated with the Therapeutic Effects of Wenweishu Capsules in Chronic Gastritis.International journal of molecular sciences · 2026Article
- Tryptophan degradation by intestinal Bacteroides induces anti-tumor immunity and limits melanoma growth.Cell reports. Medicine · 2026Article
- Microbiota-Derived Metabolites in the Epigenetic Regulation of Redox Homeostasis.Antioxidants (Basel, Switzerland) · 2026Review
- Mechanism-First Psychobiotics: Fermented Vegetables, Dairy, and Soy for Depression and Anxiety.International journal of molecular sciences · 2026Review
- Integrated Multiomics Reveals Gut-Brain Axis Dysregulation and Phenotype-Specific Metabolic Signatures in Children with Febrile Seizures.Biomedicines · 2026Article
- Gut Metabolism Links Precision Nutrition, Exercise, and Healthspan in Drosophila melanogaster.Aging cell · 2026Article
- Plant-Derived Foods and Medicines as Modulators of the Gut Microbiome: Molecular Interactions and Implications for Disease and Therapy.Molecules (Basel, Switzerland) · 2026Review
- A Comprehensive Review on the Microbial Signatures and Metabolic Mechanisms Underlying the Gut-Alzheimer's Disease Axis.Molecular neurobiology · 2026Review
73 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
3 authors at 1 institution in 1 country.
Funding
Abstract
Tryptophan metabolism and gut microbiota form an integrated regulatory axis that impacts immunity, metabolism, and cancer. This review consolidated current knowledge on the bidirectional interactions between microbial tryptophan processing and the host. We focused on how the gut microbiome controls tryptophan breakdown via the indole, kynurenine, and serotonin pathways. Dysbiosis of the gut microbiota induces disruptions in tryptophan catabolism which contribute to disorders like inflammatory conditions, neuropsychiatric diseases, metabolic syndromes, and cancer. These disruptions affect immune homeostasis, neurotransmission, and gut-brain communication. Elucidating the mechanisms of microbial tryptophan modulation could enable novel therapeutic approaches like psychobiotics and microbiome-targeted dietary interventions. Overall, further research on the microbiota-tryptophan axis has the potential to revolutionize personalized diagnostics and treatments for improving human health.
Indexed as
Identifiers
What OpenQuestion holds
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.