Cargando…
Systematic review and meta-analyses of neural structural and functional differences in generalized anxiety disorder and healthy controls using magnetic resonance imaging
OBJECTIVE: To compare structure, functional connectivity (FC) and task-based neural differences in subjects with generalized anxiety disorder (GAD) compared to healthy controls (HC). METHODS: The Embase, Ovid Medline, PsycINFO, Scopus, and Web of Science databases were searched from inception until...
Autores principales: | , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier
2019
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6879983/ https://www.ncbi.nlm.nih.gov/pubmed/31835287 http://dx.doi.org/10.1016/j.nicl.2019.102016 |
_version_ | 1783473677365411840 |
---|---|
author | Kolesar, Tiffany A. Bilevicius, Elena Wilson, Alyssia D. Kornelsen, Jennifer |
author_facet | Kolesar, Tiffany A. Bilevicius, Elena Wilson, Alyssia D. Kornelsen, Jennifer |
author_sort | Kolesar, Tiffany A. |
collection | PubMed |
description | OBJECTIVE: To compare structure, functional connectivity (FC) and task-based neural differences in subjects with generalized anxiety disorder (GAD) compared to healthy controls (HC). METHODS: The Embase, Ovid Medline, PsycINFO, Scopus, and Web of Science databases were searched from inception until March 12, 2018. Two reviewers independently screened titles, abstracts, and full-text articles. Data were extracted from records directly contrasting GAD and HC that included structure (connectivity and local indices such as volume, etc.), FC, or task-based magnetic resonance imaging data. Meta-analyses were conducted, as applicable, using AES-SDM software. RESULTS: The literature search produced 4,645 total records, of which 85 met the inclusion criteria for the systematic review. Records included structural (n = 35), FC (n = 33), and task-based (n = 42) findings. Meta-analyses were conducted on voxel-based morphometry and task-based results. DISCUSSION: The systematic review confirms and extends findings from previous reviews. Although few whole-brain resting state studies were conducted, key nodes of resting state networks have altered physiology: the hippocampus (default network), ACC and amygdala (salience network), have reduced volume, and the dlPFC (central executive network) and ACC have reduced FC with the amygdala in GAD. Nodes in the sensorimotor network are also altered with greater pre- and postcentral volume, reduced supplementary motor area volume, and reduced FC in anterior and increased FC in posterior cerebellum. CONCLUSIONS: Despite limitations due to sample size, the meta-analyses highly agree with the systematic review and provide evidence of widely distributed neural differences in subjects with GAD, compared to HC. Further research optimized for meta-analyses would greatly improve large-scale comparisons. |
format | Online Article Text |
id | pubmed-6879983 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Elsevier |
record_format | MEDLINE/PubMed |
spelling | pubmed-68799832019-11-29 Systematic review and meta-analyses of neural structural and functional differences in generalized anxiety disorder and healthy controls using magnetic resonance imaging Kolesar, Tiffany A. Bilevicius, Elena Wilson, Alyssia D. Kornelsen, Jennifer Neuroimage Clin Review Article OBJECTIVE: To compare structure, functional connectivity (FC) and task-based neural differences in subjects with generalized anxiety disorder (GAD) compared to healthy controls (HC). METHODS: The Embase, Ovid Medline, PsycINFO, Scopus, and Web of Science databases were searched from inception until March 12, 2018. Two reviewers independently screened titles, abstracts, and full-text articles. Data were extracted from records directly contrasting GAD and HC that included structure (connectivity and local indices such as volume, etc.), FC, or task-based magnetic resonance imaging data. Meta-analyses were conducted, as applicable, using AES-SDM software. RESULTS: The literature search produced 4,645 total records, of which 85 met the inclusion criteria for the systematic review. Records included structural (n = 35), FC (n = 33), and task-based (n = 42) findings. Meta-analyses were conducted on voxel-based morphometry and task-based results. DISCUSSION: The systematic review confirms and extends findings from previous reviews. Although few whole-brain resting state studies were conducted, key nodes of resting state networks have altered physiology: the hippocampus (default network), ACC and amygdala (salience network), have reduced volume, and the dlPFC (central executive network) and ACC have reduced FC with the amygdala in GAD. Nodes in the sensorimotor network are also altered with greater pre- and postcentral volume, reduced supplementary motor area volume, and reduced FC in anterior and increased FC in posterior cerebellum. CONCLUSIONS: Despite limitations due to sample size, the meta-analyses highly agree with the systematic review and provide evidence of widely distributed neural differences in subjects with GAD, compared to HC. Further research optimized for meta-analyses would greatly improve large-scale comparisons. Elsevier 2019-10-14 /pmc/articles/PMC6879983/ /pubmed/31835287 http://dx.doi.org/10.1016/j.nicl.2019.102016 Text en © 2019 The Authors http://creativecommons.org/licenses/by-nc-nd/4.0/ This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Review Article Kolesar, Tiffany A. Bilevicius, Elena Wilson, Alyssia D. Kornelsen, Jennifer Systematic review and meta-analyses of neural structural and functional differences in generalized anxiety disorder and healthy controls using magnetic resonance imaging |
title | Systematic review and meta-analyses of neural structural and functional differences in generalized anxiety disorder and healthy controls using magnetic resonance imaging |
title_full | Systematic review and meta-analyses of neural structural and functional differences in generalized anxiety disorder and healthy controls using magnetic resonance imaging |
title_fullStr | Systematic review and meta-analyses of neural structural and functional differences in generalized anxiety disorder and healthy controls using magnetic resonance imaging |
title_full_unstemmed | Systematic review and meta-analyses of neural structural and functional differences in generalized anxiety disorder and healthy controls using magnetic resonance imaging |
title_short | Systematic review and meta-analyses of neural structural and functional differences in generalized anxiety disorder and healthy controls using magnetic resonance imaging |
title_sort | systematic review and meta-analyses of neural structural and functional differences in generalized anxiety disorder and healthy controls using magnetic resonance imaging |
topic | Review Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6879983/ https://www.ncbi.nlm.nih.gov/pubmed/31835287 http://dx.doi.org/10.1016/j.nicl.2019.102016 |
work_keys_str_mv | AT kolesartiffanya systematicreviewandmetaanalysesofneuralstructuralandfunctionaldifferencesingeneralizedanxietydisorderandhealthycontrolsusingmagneticresonanceimaging AT bileviciuselena systematicreviewandmetaanalysesofneuralstructuralandfunctionaldifferencesingeneralizedanxietydisorderandhealthycontrolsusingmagneticresonanceimaging AT wilsonalyssiad systematicreviewandmetaanalysesofneuralstructuralandfunctionaldifferencesingeneralizedanxietydisorderandhealthycontrolsusingmagneticresonanceimaging AT kornelsenjennifer systematicreviewandmetaanalysesofneuralstructuralandfunctionaldifferencesingeneralizedanxietydisorderandhealthycontrolsusingmagneticresonanceimaging |