Cited by 66Gut microbiota and healthTryptophan and brain disordersGastrointestinal motility and disorders

Gut microbial changes of patients with psychotic and affective disorders: A systematic review

Vindegaard, Nina, Speyer, Helene, Nordentoft, Merete, Rasmussen, Simon, Benros, Michael Eriksen·2021·Schizophrenia Research

Abstract

Background Many diverse inflammatory pathophysiologic mechanisms have been linked to mental disorders, and through the past decade an increasing interest in the gut microbiota and its relation to mental health has been arising. We aimed to systematically review studies of alterations in gut microbiota of patients suffering from psychotic disorders, bipolar disorder or depression compared to healthy controls.Methods We systematically searched the databases CENTRAL, PubMed, EMBASE, PsycINFO and LILACS. Primary outcome was to compare the gut microbiota of patients suffering from psychotic disorders, bipolar disorder or depression with healthy controls.Results We identified 17 studies, covering 744 patients and 620 healthy controls. The most consistent microbiota changes were a tendency towards higher abundance of Actinobacteria and lower abundance of Firmicutes at the phylum level, lower abundance of Lachnospiraceae at family level and lower abundance of Faecalibacterium at genus level for the mental disorders overall. However, we found that all studies had risk of bias and that the included studies displayed great variability in methods of storage, analysis of the fecal samples, reporting of results and statistics used.Conclusion Due to the many limitations of the included studies the findings should be interpreted with caution. Larger studies (especially of schizophrenia and major depressive disorder) are needed, but it is also of great importance to gather information of and control for factors that influence the result of a microbiota analysis including body mass index (BMI), smoking, alcohol consumption, diet habits, antibiotics, sample handling, wet laboratory methods and statistics.

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Crossref · 10.1016/j.schres.2019.12.014

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  • A systematic review has revealed that patients with psychotic, bipolar and depressive disorders display altered abundances of microbial organisms in comparison to healthy controls.

    “A systematic review has revealed that patients with psychotic, bipolar and depressive disorders display altered abundances of microbial organisms in comparison to HCs105.”

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Authors
Vindegaard, N., Speyer, H., Nordentoft, M., Rasmussen, S., & Benros, M. E.
Affiliations
  • Mental Health Services (DK)
  • University of Copenhagen (DK)
Corresponding author
Benros, Michael Eriksen
Venue
Schizophrenia Research
Publisher
Elsevier BV
Published
2021-08
Volume
234
Pages
41-50
ISSN
0920-9964 (ISSN-L)
OpenAlex
W2998867613
Cited by
66
References
92
Citations by year
2026: 4 · 2025: 6 · 2024: 11 · 2023: 7 · 2022: 17 · 2021: 16 · 2020: 5
FWCI
1.08
Type
journal article
Language
en
Open access
closed
Locations
  • Schizophrenia Research (publishedVersion)
  • PubMed (publishedVersion)
  • Research at the University of Copenhagen (University of Copenhagen) (submittedVersion)
Funders
  • Lundbeckfonden (R268-2016-3925)
  • Novo Nordisk Fonden (NNF14CC0001)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Life Sciences › Neuroscience › Biological Psychiatry › Tryptophan and brain disorders
  • Health Sciences › Medicine › Gastroenterology › Gastrointestinal motility and disorders
Keywords
gut microbiota, psychosis
MeSH terms
Gastrointestinal Microbiome, Mental Disorders, Bipolar Disorder, Major Depressive Disorder, Depressive Disorder, Major, Humans, Microbiota

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