Evidence map›Paper›PMID 25610781›Full record

ArticleNeuroImage. Clinical2015

Reduced hippocampal volume and hypothalamus-pituitary-adrenal axis function in first episode psychosis: evidence for sex differences.

Marita Pruessner, Martin Lepage, D Louis Collins, Jens C Pruessner, Ridha Joober, Ashok K Malla

Open access · goldAbstract read
In one paragraph

Article in NeuroImage. Clinical, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 1 pooled it
1.8field-weighted citation impact, top 17% 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

21 citing papers in PubMed, 1 synthesis or guideline pooled it, 54 citations in OpenAlex.

  1. Pooled it
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  10. Exploring causal mechanisms of psychosis risk.Neuroscience and biobehavioral reviews · 2024
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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

6 authors at 3 institutions in 1 country.

Marita PruessnerDepartment of Psychiatry, Prevention and Early Intervention Program for Psychosis, Douglas Mental Health University Institute, McGill University, Montreal, Quebec, Canada.
Martin LepageDepartment of Psychiatry, Prevention and Early Intervention Program for Psychosis, Douglas Mental Health University Institute, McGill University, Montreal, Quebec, Canada.
D Louis CollinsMcConnell Brain Imaging Centre, Montreal Neurological Institute, McGill University, Montreal, Quebec, Canada.
Jens C PruessnerDepartment of Psychiatry, McGill Centre for Studies in Aging, Douglas Mental Health University Institute, McGill University, Montreal, Quebec, Canada.
Ridha JooberDepartment of Psychiatry, Prevention and Early Intervention Program for Psychosis, Douglas Mental Health University Institute, McGill University, Montreal, Quebec, Canada.
Ashok K MallaDepartment of Psychiatry, Prevention and Early Intervention Program for Psychosis, Douglas Mental Health University Institute, McGill University, Montreal, Quebec, Canada.
McGill University · CADouglas Mental Health University Institute · CAMontreal Neurological Institute and Hospital · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundHippocampal volume (HV) decline is an important marker of psychosis and has been associated with hypothalamus-pituitary-adrenal (HPA) axis dysregulation in various disorders. Given recent findings of sex differences in HPA axis function in psychosis, the current study investigated differences in HV in male and female first episode psychosis (FEP) patients and controls and the interaction of HV with the cortisol awakening response (CAR) and symptoms.

methodsFifty-eight patients with a diagnosis of FEP (39 men, 19 women) and 27 healthy community controls (15 men, 12 women) underwent structural magnetic resonance imaging (MRI) on a 1.5 T scanner. Hippocampal volume was determined using previously established segmentation protocols. Saliva samples for cortisol assessment were collected at 0, 30 and 60 min after awakening. Psychotic symptoms were assessed with the Scale for Assessment of Positive Symptoms (SAPS), the Scale for Assessment of Negative Symptoms (SANS) and the Global Assessment of Functioning (GAF) scale.

resultsMale patients had significantly smaller left and right HVs compared to male controls, which appeared to be secondary to global brain volume differences. However, even when controlling for overall brain size, male patients showed smaller HV compared to female patients. The CAR was significantly lower in male patients compared to male controls and female patients. Only in male patients, smaller left HV was significantly associated with a blunted CAR, and smaller HV bilaterally was related to positive psychotic symptoms and lower levels of functioning.

conclusionsWe propose that reduced hippocampal volume and an attenuated cortisol awakening response are related markers of increased stress vulnerability in male psychosis patients and that both contribute to the unfavorable clinical picture in men.

Indexed as

Sex CharacteristicsAdultFemaleHippocampusHumansHydrocortisoneHypothalamo-Hypophyseal SystemMagnetic Resonance ImagingMalePituitary-Adrenal SystemPsychotic DisordersSalivaYoung AdultHydrocortisoneCortisol awakening responseFirst episode psychosisHippocampusHypothalamus–pituitary–adrenal axisSex differences

Identifiers

PMID25610781
PMCPMC4300007
OpenAlexW2084095276

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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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.