Evidence map›Paper›PMID 37127945›Full record

SynthesisBrain and behavior2023

A systematic review on gut-brain axis aberrations in bipolar disorder and methods of balancing the gut microbiota.

Crystal Obi-Azuike, Ruona Ebiai, Taneil Gibson, Ariana Hernandez, Asma Khan, Gibson Anugwom, Alexsandra Urhi, Sakshi Prasad, Sara Ait Souabni, Funso Oladunjoye

Open access · goldAbstract readSystematic Review
In one paragraph

Synthesis in Brain and behavior, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 4 pooled it
3.4field-weighted citation impact, top 7% of its field
1 · What the graph read from 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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

18 citing papers in PubMed, 4 syntheses or guidelines pooled it, 22 citations in OpenAlex.

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  2. The Impact ofCurrent neuropharmacology · 2025
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  10. Discovering a new paradigm: Gut microbiota as a central modulator of sexual health.World journal of gastrointestinal pathophysiology · 2025
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors at 8 institutions in 4 countries.

Crystal Obi-AzuikeDepartment of Psychiatry and Behavioral Sciences, Tulane University School of Medicine, New Orleans, Los Angeles, USA.
Ruona EbiaiDepartment of Internal Medicine, Ochsner Clinic Foundation, New Orleans, Louisiana, USA.
Taneil GibsonDepartment of Psychiatry, University of Medicine and Health Sciences (UMHS), New York, New York, USA.
Ariana HernandezDepartment of Psychiatry, University of Medicine and Health Sciences (UMHS), New York, New York, USA.
Asma KhanDepartment of Psychiatry, Lake Erie College of Osteopathic Medicine, Erie, Pennsylvania, USA.
Gibson AnugwomMenninger Department of Psychiatry & Behavioral Sciences, Baylor College of Medicine, Houston, Texas, USA.
Alexsandra UrhiDepartment of Mental Health, Federal Medical Center, Asaba, Delta State, Nigeria.
Sakshi PrasadDepartment of Psychiatry, National Pirogov Memorial Medical University, Vinnytsya, Vinnytsya, Ukraine.ORCID 0000-0002-1014-9031
Sara Ait SouabniFaculty of Medicine and Pharmacy of Marrakesh, Cadi Ayyad University, -, Marrakech, Marrakech, Morocco.
Funso OladunjoyeMenninger Department of Psychiatry & Behavioral Sciences, Baylor College of Medicine, Houston, Texas, USA.
Baylor College of Medicine · USNew York University · USCadi Ayyad University · MAFederal Medical Centre · NGLake Erie College of Osteopathic Medicine · USNational Pirogov Memorial Medical University, Vinnytsya · UAOchsner Medical Center · USTulane University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundBipolar disorder (BD) is a mood disorder that affects millions worldwide. Up to half of the diagnosed patients are reported to not receive adequate treatment. This study aims to assess the relationship between the gut-brain axis and BD and to discuss and compare the efficacy of varying methods of balancing gut microbiotas in BD.

methodsUsing PubMed, Embase, and Google Scholar from November 2021 to February 2022, we found 5310 studies on gut microbiota and its relation to BD. Using our inclusion criteria, 5283 studies were excluded. A total of 27 full-text articles were assessed for eligibility. Also, 12 articles that met our criteria and eligibility criteria reported on 613 BD patients.

resultsMost studies analyzed found an overall difference in gut microbiota composition in bipolar patients compared to healthy controls, though the alterations found were not consistent. Differences in Lactobacillus, Faecalibacterium, and Ruminococcus abundance in BD compared to controls were found to be the most consistent across a few of the studies, but their effects on the gut-brain axis conflicted. Probiotic supplementation was found to lower patient rehospitalizations and significantly improve depressive symptoms and cognitive impairments among patients with BD.

conclusionsMultiple studies included in this review point toward a possible link between BD and the gut microbiota. Probiotic supplements and other gut-balancing therapies could serve as effective adjunctive methods for the treatment of BD. Notable limitations of the studies included for analysis were small sample sizes and majority observational study designs. Furthermore, the microbiota aberrations found in patients with BD were not consistent across multiple studies. Despite these limitations, our findings demonstrate the need for further research regarding the relationship between aberrant gut microbiota profiles and BD, as well as the effectiveness of gut balancing methods as adjunctive treatments.

Indexed as

Bipolar DisorderGastrointestinal MicrobiomeBrain-Gut AxisHumansObservational Studies as Topicbiomarkerbipolar depressionbipolar disordergut microbiomegut microbiotamaniamood disorderprobiotic

Identifiers

PMID37127945
PMCPMC10275531
OpenAlexW4367669427

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.