Adolescent depression and resting-state fMRI brain networks: a scoping review of longitudinal studies

Author(s)

Marcos Antônio Macêdo ^[1] ; João Ricardo Sato ; Rodrigo A. Bressan ; Pedro Mario Pan

Affiliation

^[1] Universidade Federal de São Paulo (UNIFESP). Laboratório Interdisciplinar de Neurociências Clínicas, Departamento de Psiquiatria - Brasil

• Document type: Journal article
• Source: Revista Brasileira de Psiquiatria; v. 44, n. 4, p. 420-433, 2022-07-15.

Abstract

The neurobiological factors associated with the emergence of major depressive disorder (MDD) in adolescence are still unclear. Previous cross-sectional studies have documented aberrant connectivity in resting-state functional magnetic resonance imaging (rs-fMRI) networks. However, whether these findings precede MDD onset has not been established. This scoping review mapped key methodological aspects and main findings of longitudinal rs-fMRI studies of MDD in adolescence. Three sets of neuroimaging methods to analyze rs-fMRI data were identified: seed-based analysis, independent component analysis, and network-based approaches. Main findings involved aberrant connectivity within and between the default mode network (DMN), the cognitive control network (CCN), and the salience network (SN). Accordingly, we utilized Menon’s (2011) triple-network model for neuropsychiatric disorders to summarize key results. Adolescent MDD was associated with hyperconnectivity within the SN and between DMN and SN, as well as hypoconnectivity within the CCN. These findings suggested that dysfunctional connectivity among the three main large-scale brain networks preceded MDD onset. However, there was high heterogeneity in neuroimaging methods and sampling procedures, which may limit comparisons between studies. Future studies should consider some level of harmonization for clinical instruments and neuroimaging methods. (AU)

• FAPESP's process: 18/21934-5 - Network statistics: theory, methods, and applications
• Grantee: André Fujita
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 18/04654-9 - Time series, wavelets and high dimensional data
• Grantee: Pedro Alberto Morettin
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 14/50917-0 - INCT 2014: developmental psychiatry for children and adolescents
• Grantee: Eurípedes Constantino Miguel Filho
• Support Opportunities: Research Projects - Thematic Grants