Evidence map›Paper›PMID 33447663›Full record

ReviewBrain and neuroscience advances

Early-life stress and inflammation: A systematic review of a key experimental approach in rodents.

Ethan G Dutcher, E A Claudia Pama, Mary-Ellen Lynall, Shahid Khan, Menna R Clatworthy, Trevor W Robbins, Edward T Bullmore, Jeffrey W Dalley

Open access · goldAbstract readReview
In one paragraph

Review in Brain and neuroscience advances. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 56 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
56citing papers in PubMed, 1 pooled it
5.0field-weighted citation impact, top 3% 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

56 citing papers in PubMed, 1 synthesis or guideline pooled it, 90 citations in OpenAlex.

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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

8 authors at 3 institutions in 1 country.

Ethan G DutcherDepartment of Psychology, University of Cambridge, Cambridge, UK.ORCID https://orcid.org/0000-0002-3405-3309
E A Claudia PamaDepartment of Psychology, University of Cambridge, Cambridge, UK.
Mary-Ellen LynallDepartment of Psychiatry, University of Cambridge, Cambridge, UK.
Shahid KhanGlaxoSmithKline Research & Development, Stevenage, UK.
Menna R ClatworthyMolecular Immunity Unit, MRC Laboratory of Molecular Biology, Cambridge, UK.
Trevor W RobbinsDepartment of Psychology, University of Cambridge, Cambridge, UK.
Edward T BullmoreDepartment of Psychiatry, University of Cambridge, Cambridge, UK.
Jeffrey W DalleyDepartment of Psychology, University of Cambridge, Cambridge, UK.
University of Cambridge · GBMRC Laboratory of Molecular Biology · GBGlaxoSmithKline (United Kingdom) · GB

Funding

Medical Research Council G1000183Medical Research Council MC_G0802534Medical Research Council MR/L014815/1Medical Research Council MR/S006257/1Wellcome Trust
6 · The paper itself

Abstract

Repeated maternal separation is the most widely used pre-clinical approach to investigate the relationship between early-life chronic stress and its neuropsychiatric and physical consequences. In this systematic review, we identified 46 studies that conducted repeated maternal separation or single-episode maternal separation and reported measurements of interleukin-1b, interleukin-6, interleukin-10, tumour necrosis factor-alpha, or microglia activation and density. We report that in the short-term and in the context of later-life stress, repeated maternal separation has pro-inflammatory immune consequences in diverse tissues. Repeated maternal separation animals exhibit greater microglial activation and elevated pro-inflammatory cytokine signalling in key brain regions implicated in human psychiatric disorders. Notably, repeated maternal separation generally has no long-term effect on cytokine expression in any tissue in the absence of later-life stress. These observations suggest that the elevated inflammatory signalling that has been reported in humans with a history of early-life stress may be the joint consequence of ongoing stressor exposure together with potentiated neural and/or immune responsiveness to stressors. Finally, our findings provide detailed guidance for future studies interrogating the causal roles of early-life stress and inflammation in disorders such as major depression.

Indexed as

chronic stresscytokinesdepressionearly-life adversityimmune systemMaternal separationneuroimmune responsiveness

Identifiers

PMID33447663
PMCPMC7780197
OpenAlexW3115799002

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.