Evidence map›Paper›PMID 33876886›Full record

ReviewThe European journal of neuroscience2022

Inflammation-driven brain and gut barrier dysfunction in stress and mood disorders.

Ellen Doney, Alice Cadoret, Laurence Dion-Albert, Manon Lebel, Caroline Menard

Open access · greenAbstract readReview
In one paragraph

Review in The European journal of neuroscience, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 66 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
66citing papers in PubMed, 3 pooled it
5.4field-weighted citation impact, top 2% 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

66 citing papers in PubMed, 3 syntheses or guidelines pooled it, 116 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Probiotics for the treatment of depression and its comorbidities: A systemic review.Frontiers in cellular and infection microbiology · 2023
    Pooled it
  4. Nutrients · 2023
    Trial
  5. Article
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  9. Differential impact of manic versus depressive episode recurrence on longitudinal gray matter volume changes in bipolar disorder.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2026
    Article
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6 more citing papers are in PubMed but not listed here.

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

5 authors at 1 institution in 1 country.

Ellen DoneyDepartment of Psychiatry and Neuroscience, Faculty of Medicine and CERVO Brain Research Center, Université Laval, QC, Canada.ORCID 0000-0003-2094-5514
Alice CadoretDepartment of Psychiatry and Neuroscience, Faculty of Medicine and CERVO Brain Research Center, Université Laval, QC, Canada.ORCID 0000-0001-8228-3320
Laurence Dion-AlbertDepartment of Psychiatry and Neuroscience, Faculty of Medicine and CERVO Brain Research Center, Université Laval, QC, Canada.
Manon LebelDepartment of Psychiatry and Neuroscience, Faculty of Medicine and CERVO Brain Research Center, Université Laval, QC, Canada.
Caroline MenardDepartment of Psychiatry and Neuroscience, Faculty of Medicine and CERVO Brain Research Center, Université Laval, QC, Canada.ORCID 0000-0001-8202-7378
Université Laval · CA

Funding

CIHR
6 · The paper itself

Abstract

Regulation of emotions is generally associated exclusively with the brain. However, there is evidence that peripheral systems are also involved in mood, stress vulnerability vs. resilience, and emotion-related memory encoding. Prevalence of stress and mood disorders such as major depression, bipolar disorder, and post-traumatic stress disorder is increasing in our modern societies. Unfortunately, 30%-50% of individuals respond poorly to currently available treatments highlighting the need to further investigate emotion-related biology to gain mechanistic insights that could lead to innovative therapies. Here, we provide an overview of inflammation-related mechanisms involved in mood regulation and stress responses discovered using animal models. If clinical studies are available, we discuss translational value of these findings including limitations. Neuroimmune mechanisms of depression and maladaptive stress responses have been receiving increasing attention, and thus, the first part is centered on inflammation and dysregulation of brain and circulating cytokines in stress and mood disorders. Next, recent studies supporting a role for inflammation-driven leakiness of the blood-brain and gut barriers in emotion regulation and mood are highlighted. Stress-induced exacerbated inflammation fragilizes these barriers which become hyperpermeable through loss of integrity and altered biology. At the gut level, this could be associated with dysbiosis, an imbalance in microbial communities, and alteration of the gut-brain axis which is central to production of mood-related neurotransmitter serotonin. Novel therapeutic approaches such as anti-inflammatory drugs, the fast-acting antidepressant ketamine, and probiotics could directly act on the mechanisms described here improving mood disorder-associated symptomatology. Discovery of biomarkers has been a challenging quest in psychiatry, and we end by listing promising targets worth further investigation.

Indexed as

Bipolar DisorderMood DisordersAnimalsAntidepressive AgentsBrainInflammationAntidepressive Agentsbipolarblood-brain barriercytokinedepressionemotionmicrobiomePTSD

Identifiers

PMID33876886
PMCPMC9290537
OpenAlexW3155693531

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.