Observational studyScientific reports2022
Changes in the stool and oropharyngeal microbiome in obsessive-compulsive disorder.
Observational study in Scientific reports, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 2 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
24 citing papers in PubMed, 2 syntheses or guidelines pooled it, 44 citations in OpenAlex.
- The oro- and nasopharyngeal microbiota as a revolutionary perspective on mental disorders and related psychopathology: a systematic review and meta-analysis.Journal of translational medicine · 2025Pooled it
- Perturbations in Gut Microbiota Composition in Psychiatric Disorders: A Review and Meta-analysis.JAMA psychiatry · 2021Pooled it
- Fava bean and buckwheat are sustainable food sources which support satiety and beneficially modulate several biomarkers, bacteria and metabolites associated with human health.European journal of nutrition · 2025Trial
- Pre-treatment serum extracellular vesicle-enriched microbiome profiles and SSRI treatment response in obsessive-compulsive disorder: a prospective naturalistic cohort study.Frontiers in psychiatry · 2026Article
- Synbiotic laden with Faecalibacterium prausnitzii, fructooligosaccharides, and galactooligosaccharides mitigates quinpirole-induced OCD-like symptoms in rats.Metabolic brain disease · 2025Article
- Gut Microbiota and Obsessive-Compulsive Disorder: A Systematic Review of Mechanistic Links, Evidence from Human and Preclinical Studies, and Therapeutic Prospects.Life (Basel, Switzerland) · 2025Review
- Psychiatric Morbidity Following Intestinal Infectious Diseases: A Nationwide Cohort Study in South Korea.Stress and health : journal of the International Society for the Investigation of Stress · 2025Article
- Biological, Psychosocial, and Microbial Determinants of Childhood-Onset Obsessive-Compulsive Disorder: A Narrative Review.Children (Basel, Switzerland) · 2025Review
- Relationships of Personality Traits With the Taxonomic Composition of the Gut Microbiome Among Psychiatric Inpatients.The Journal of neuropsychiatry and clinical neurosciences · 2025Article
- Altered oral microbiome composition in mental disorders: a systematic review and meta-analysis.Journal of oral microbiology · 2025Review
- Microbiome: A Key Regulator of Body-Brain Interactions.Advances in experimental medicine and biology · 2025Review
- Environmental, socioeconomic, and health factors associated with gut microbiome species and strains in isolated Honduras villages.Cell reports · 2024Article
- Human microbiota from drug-naive patients with obsessive-compulsive disorder drives behavioral symptoms and neuroinflammation via succinic acid in mice.Molecular psychiatry · 2024Article
- Gut Microbiota and Gastrointestinal Symptoms in the Global Assessment of Obsessive-Compulsive Disorder: A Narrative Review of Current Evidence and Practical Implications.Brain sciences · 2024Review
- The Gut-Brain Axis and the Microbiome in Anxiety Disorders, Post-Traumatic Stress Disorder and Obsessive-Compulsive Disorder.Current neuropharmacology · 2024Review
- Longitudinal study of gut microbiome in obsessive-compulsive disorder.Brain and behavior · 2023Article
- Microbial Reprogramming in Obsessive-Compulsive Disorders: A Review of Gut-Brain Communication and Emerging Evidence.International journal of molecular sciences · 2023Review
- Psychiatric polygenic risk as a predictor of COVID-19 risk and severity: insight into the genetic overlap between schizophrenia and COVID-19.Translational psychiatry · 2023Article
- Human microbiome collection.Scientific reports · 2023Article
- The butyrate-producing and spore-forming bacterial genusGut microbiome (Cambridge, England) · 2023Review
Corrections and comments
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Authors and funding
15 authors at 7 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Although the etiology of obsessive-compulsive disorder (OCD) is largely unknown, it is accepted that OCD is a complex disorder. There is a known bi-directional interaction between the gut microbiome and brain activity. Several authors have reported associations between changes in gut microbiota and neuropsychiatric disorders, including depression or autism. Furthermore, a pediatric-onset neuropsychiatric OCD-related syndrome occurs after streptococcal infection, which might indicate that exposure to certain microbes could be involved in OCD susceptibility. However, only one study has investigated the microbiome of OCD patients to date. We performed 16S ribosomal RNA gene-based metagenomic sequencing to analyze the stool and oropharyngeal microbiome composition of 32 OCD cases and 32 age and gender matched controls. We estimated different α- and β-diversity measures and performed LEfSe and Wilcoxon tests to assess differences in bacterial distribution. OCD stool samples showed a trend towards lower bacterial α-diversity, as well as an increase of the relative abundance of Rikenellaceae, particularly of the genus Alistipes, and lower relative abundance of Prevotellaceae, and two genera within the Lachnospiraceae: Agathobacer and Coprococcus. However, we did not observe a different Bacteroidetes to Firmicutes ratio between OCD cases and controls. Analysis of the oropharyngeal microbiome composition showed a lower Fusobacteria to Actinobacteria ratio in OCD cases. In conclusion, we observed an imbalance in the gut and oropharyngeal microbiomes of OCD cases, including, in stool, an increase of bacteria from the Rikenellaceae family, associated with gut inflammation, and a decrease of bacteria from the Coprococcus genus, associated with DOPAC synthesis.
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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.