A systematic review and meta-analysis of neuroimaging studies examining synaptic density in individuals with psychotic spectrum disorders.


Journal

BMC psychiatry
ISSN: 1471-244X
Titre abrégé: BMC Psychiatry
Pays: England
ID NLM: 100968559

Informations de publication

Date de publication:
19 Jun 2024
Historique:
received: 24 08 2023
accepted: 25 04 2024
medline: 20 6 2024
pubmed: 20 6 2024
entrez: 19 6 2024
Statut: epublish

Résumé

Psychotic disorders have long been considered neurodevelopmental disorders where excessive synaptic pruning and cortical volume loss are central to disease pathology. We conducted a systematic review of the literature to identify neuroimaging studies specifically examining synaptic density across the psychosis spectrum. PRISMA guidelines on reporting were followed. We systematically searched MEDLINE, Embase, APA PsycINFO, Web of Science and The Cochrane Library from inception to December 8, 2023, and included all original peer-reviewed articles or completed clinical neuroimaging studies of any modality measuring synaptic density in participants with a diagnosis of psychosis spectrum disorder as well as individuals with psychosis-risk states. The NIH quality assessment tool for observational cohort and cross-sectional studies was used for the risk of bias assessment. Five studies (k = 5) met inclusion criteria, comprising n = 128 adults (psychotic disorder; n = 61 and healthy volunteers; n = 67 and specifically measuring synaptic density via positron emission tomography (PET) imaging of the synaptic vesicle glycoprotein 2 A (SV2A). Three studies were included in our primary meta-analysis sharing the same outcome measure of SV2A binding, volume of distribution (V Preliminary studies provide in vivo evidence for reduced synaptic density in psychotic disorders. However, replication of findings in larger samples is required prior to definitive conclusions being drawn. CRD42022359018.

Sections du résumé

BACKGROUND BACKGROUND
Psychotic disorders have long been considered neurodevelopmental disorders where excessive synaptic pruning and cortical volume loss are central to disease pathology. We conducted a systematic review of the literature to identify neuroimaging studies specifically examining synaptic density across the psychosis spectrum.
METHODS METHODS
PRISMA guidelines on reporting were followed. We systematically searched MEDLINE, Embase, APA PsycINFO, Web of Science and The Cochrane Library from inception to December 8, 2023, and included all original peer-reviewed articles or completed clinical neuroimaging studies of any modality measuring synaptic density in participants with a diagnosis of psychosis spectrum disorder as well as individuals with psychosis-risk states. The NIH quality assessment tool for observational cohort and cross-sectional studies was used for the risk of bias assessment.
RESULTS RESULTS
Five studies (k = 5) met inclusion criteria, comprising n = 128 adults (psychotic disorder; n = 61 and healthy volunteers; n = 67 and specifically measuring synaptic density via positron emission tomography (PET) imaging of the synaptic vesicle glycoprotein 2 A (SV2A). Three studies were included in our primary meta-analysis sharing the same outcome measure of SV2A binding, volume of distribution (V
CONCLUSIONS CONCLUSIONS
Preliminary studies provide in vivo evidence for reduced synaptic density in psychotic disorders. However, replication of findings in larger samples is required prior to definitive conclusions being drawn.
PROSPERO UNASSIGNED
CRD42022359018.

Identifiants

pubmed: 38898401
doi: 10.1186/s12888-024-05788-y
pii: 10.1186/s12888-024-05788-y
doi:

Substances chimiques

Nerve Tissue Proteins 0
SV2A protein, human 148845-93-6
Membrane Glycoproteins 0

Types de publication

Systematic Review Journal Article Meta-Analysis

Langues

eng

Sous-ensembles de citation

IM

Pagination

460

Subventions

Organisme : Slaight Family Center for Youth in Transition
ID : Seed funding Award
Organisme : Slaight Family Center for Youth in Transition
ID : Seed funding Award
Organisme : Slaight Family Center for Youth in Transition
ID : Seed funding Award
Organisme : Slaight Family Center for Youth in Transition
ID : Seed funding Award

Informations de copyright

© 2024. The Author(s).

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Auteurs

Muhammad Omair Husain (MO)

Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Canada. Omair.husain@camh.ca.
Department of Psychiatry, Temerty Faculty of Medicine, University of Toronto, Toronto, Canada. Omair.husain@camh.ca.

Brett Jones (B)

Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Canada.
Department of Psychiatry, Temerty Faculty of Medicine, University of Toronto, Toronto, Canada.

Usman Arshad (U)

Pakistan Institute of Living and Learning, Karachi, Pakistan.
Division of Psychology & Mental Health, University of Manchester, Manchester, UK.

Stephanie H Ameis (SH)

Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Canada.
Department of Psychiatry, Temerty Faculty of Medicine, University of Toronto, Toronto, Canada.

Giselle Mirfallah (G)

Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Canada.

Christin Schifani (C)

Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Canada.

Terri Rodak (T)

Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Canada.

Madina Aiken (M)

Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Canada.

Mudassar Shafique (M)

Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Canada.

Fatima Ahmed (F)

Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Canada.

Aristotle Voineskos (A)

Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Canada.
Department of Psychiatry, Temerty Faculty of Medicine, University of Toronto, Toronto, Canada.

Muhammad Ishrat Husain (MI)

Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Canada.
Department of Psychiatry, Temerty Faculty of Medicine, University of Toronto, Toronto, Canada.

George Foussias (G)

Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Canada.
Department of Psychiatry, Temerty Faculty of Medicine, University of Toronto, Toronto, Canada.

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