Title

Structural brain networks in remitted psychotic depression

UMMS Affiliation

Department of Psychiatry

Publication Date

2020-02-28

Document Type

Article

Disciplines

Mental and Social Health | Neuroscience and Neurobiology | Psychiatry | Psychiatry and Psychology

Abstract

Major depressive disorder with psychotic features (psychotic depression) is a severe disorder. Compared with other psychotic disorders such as schizophrenia, relatively few studies on the neurobiology of psychotic depression have been pursued. Neuroimaging studies investigating psychotic depression have provided evidence for distributed structural brain abnormalities implicating the insular cortex and limbic system. We examined structural brain networks in participants (N = 245) using magnetic resonance imaging. This sample included healthy controls (n = 159) and the largest cross-sectional sample of patients with remitted psychotic depression (n = 86) collected to date. All patients participated in the Study of Pharmacotherapy of Psychotic Depression II randomized controlled trial. We used a novel, whole-brain, data-driven parcellation technique-non-negative matrix factorization-and applied it to cortical thickness data to derive structural covariance networks. We compared patients with remitted psychotic depression to healthy controls and found that patients had significantly thinner cortex in five structural covariance networks (insular-limbic, occipito-temporal, temporal, parahippocampal-limbic, and inferior fronto-temporal), confirming our hypothesis that affected brain networks would incorporate cortico-limbic regions. We also found that cross-sectional depression and severity scores at the time of scanning were associated with the insular-limbic network. Furthermore, the insular-limbic network predicted future severity scores that were collected at the time of recurrence of psychotic depression or sustained remission. Overall, decreased cortical thickness was found in five structural brain networks in patients with remitted psychotic depression and brain-behavior relationships were observed, particularly between the insular-limbic network and illness severity.

Keywords

Diagnostic markers, Translational research

DOI of Published Version

10.1038/s41386-020-0646-7

Source

Neufeld NH, Kaczkurkin AN, Sotiras A, Mulsant BH, Dickie EW, Flint AJ, Meyers BS, Alexopoulos GS, Rothschild AJ, Whyte EM, Mah L, Nierenberg J, Hoptman MJ, Davatzikos C, Satterthwaite TD, Voineskos AN. Structural brain networks in remitted psychotic depression. Neuropsychopharmacology. 2020 Feb 28. doi: 10.1038/s41386-020-0646-7. Epub ahead of print. PMID: 32109935. Link to article on publisher's site

Journal/Book/Conference Title

Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology

Comments

Full author list omitted for brevity. For the full list of authors, see article.

Related Resources

Link to Article in PubMed

PubMed ID

32109935

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