ArticleNutrients2023
Dysbiosis of the Gut Microbiota and Kynurenine (Kyn) Pathway Activity as Potential Biomarkers in Patients with Major Depressive Disorder.
Article in Nutrients, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 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
32 citing papers in PubMed, 3 syntheses or guidelines pooled it, 43 citations in OpenAlex.
- Pharmaco-psychiatry and gut microbiome: a systematic review of effects of psychotropic drugs for bipolar disorder.Microbiology (Reading, England) · 2025Pooled it
- The gut microbiota-brain-CAR T cell axis: a systematic review of gut microbiome modulation and its impact on neurological complications and treatment responses in CAR T cell therapy.Frontiers in immunology · 2025Pooled it
- A comparison between children and adolescents with autism spectrum disorders and healthy controls in biomedical factors, trace elements, and microbiota biomarkers: a meta-analysis.Frontiers in psychiatry · 2023Pooled it
- Improving the Outcome of Brain-Injured Patients by Non-Continuous Feeding to Prevent Dysbiosis.Nutrients · 2026Review
- Targeting the Gut-Brain-Ferroptosis Axis: Molecular Mechanisms and Therapeutic Potential in Alzheimer's Disease and Epilepsy.Journal of molecular neuroscience : MN · 2026Review
- Role of Gut Microbiota in Psychiatric Disorders: From Mechanistic Insights to Therapeutic Strategies.Journal of Korean medical science · 2026Review
- Kynurenine pathway dysregulation in major depressive disorder: the convergence of excitotoxicity, neuroinflammation, and oxidative stress.Journal of neuroinflammation · 2026Review
- Sex-dependent locus coeruleus vulnerability in Alzheimer's disease: gut dysbiosis as a driver and probiotic intervention as rescue.Biology of sex differences · 2026Review
- Harnessing Dietary Tryptophan: Bridging the Gap Between Neurobiology and Psychiatry in Depression Management.International journal of molecular sciences · 2026Review
- Tryptophan metabolism: a critical bridge linking gut microbiota to depression.Frontiers in microbiology · 2026Review
- The melatonin-microbiome axis: a new frontier in gut health for the immunomodulatory, antioxidant and anti-inflammatory properties.Inflammopharmacology · 2026Review
- Gingerol-Enriched Ginger Extract Effects on Anxiety-like Behavior in a Neuropathic Pain Model via Colonic Microbiome-Neuroimmune Modulation.Molecules (Basel, Switzerland) · 2026Article
- Social stress changes gut microbiome composition in male, female, and aggressor mice.Brain, behavior, & immunity - health · 2025Article
- Molecular Mechanisms of Depression: The Interplay Between Genes and Receptors.International journal of molecular sciences · 2025Review
- Lactobacillus fermentum ATCC 9338 ameliorates immune dysregulation via indoleamine 2, 3-dioxygenase through modulating gut microbial diversity of chronic unpredictable mild stressed mouse.Metabolic brain disease · 2025Article
- The Endocannabinoid-Microbiota-Neuroimmune Super-System: A Unifying Feedback Architecture for Systems Resilience, Collapse Trajectories, and Precision Feedback Medicine.International journal of molecular sciences · 2025Review
- Gut Feelings: Linking Dysbiosis to Depression-A Narrative Literature Review.Medicina (Kaunas, Lithuania) · 2025Review
- Host-microbiome relationship in depression: can human induced pluripotent stem cells play a role in unravelling mechanisms?NPJ biofilms and microbiomes · 2025Review
- A Novel Frontier in Gut-Brain Axis Research: The Transplantation of Fecal Microbiota in Neurodegenerative Disorders.Biomedicines · 2025Review
- Gut Microbiota: A New Challenge in Mood Disorder Research.Life (Basel, Switzerland) · 2025Review
Corrections and comments
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Authors and funding
15 authors at 3 institutions in 2 countries.
Funding
Abstract
With increasing attention paid to the concept of the microbiota-gut-brain axis, mounting evidence reveals that the gut microbiota is involved in a variety of neurological and psychiatric diseases. However, gut microbiota changes in major depressive disorder (MDD) patients and their association with disease mechanisms remain undefined. Fifty MDD patients and sixty healthy controls were recruited from the Shanghai Healthy Mental Center, China. Fecal samples were collected, and the compositional characteristics of the intestinal flora were determined in MDD patients by MiSeq sequencing. Venous blood was collected for the detection of plasma indoleamine-2,3-dioxygenase (Ido), kynurenine (Kyn) and tryptophan (Trp) levels. Stool samples of bacterial 16S sequencing was carried out. A total of 2,705,809 optimized sequences were obtained, with an average of 54,116 per sample. More unique OTUs were observed at the family, genus and species levels in the control group compared with the MDD cases. Further analysis showed significant changes in the α- and β-diversities and relative abundance levels of gut microbial entities in MDD patients, as well as elevated amounts of Ido and Kyn indicating Kyn pathway activation, KEGG bacterial 16S function prediction analysis shows a variety of amino acids and metabolic (including Ido, Trp and Kyn) changes in the body of patients with MDD. These may result in increased neurotoxic metabolites and reduced generation of serotonin in the disease process. These changed factors may potentially be utilized as biomarkers for MDD in the future, playing more important roles in the disease course.
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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.