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Brain areas associated with resilience to depression in high-risk young women

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Abstract

Previous structural brain-imaging studies in first-degree relatives of depressed patients showed alterations that are generally accepted as vulnerability markers for depression. However, only half of the relatives had depression at follow-up, while the other half did not. The aim of this study was to identify the brain areas associated with resilience to depression in high-risk subjects with familial depression. We recruited 59 young women with a history of depressed mothers. Twenty-nine of them (high-risk group [HRG]) had no depression history, while 30 (depressive group) had at least 1 depressive episode in adolescence. The brain structures of the groups were compared through voxel-based morphometry and analysis of cortical thickness. Individual amygdala nuclei and hippocampal subfield volumes were measured. The analysis showed larger amygdala volume, thicker subcallosal cortex and bilateral insula in the women in the HRG compared with those in the depressive group. In addition, we detected more gray matter in the left temporal pole in the HRG. The larger gray matter volume and increased cortical thickness in the key hub regions of the salience network (amygdala and insula) and structurally connected regions in the limbic network (subcallosal area and temporal pole) might prevent women in the HRG from converting to depression.

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Acknowledgements

We thank Sebnem Tunay and Seren Acikel for their help during data collection, Isinsu Unaran for proof reading the manuscript. This work was supported by The Scientific and Technological Research Council of Turkey (Project Number 109S134).

Funding

This work was supported by The Scientific and Technological Research Council of Turkey (Project Number 109S134).

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Authors and Affiliations

Authors

Contributions

BBB: writing—original draft, formal analysis. GD: methodology and investigation. AY: writing—review and editing. OO and OU: formal analysis. EU: writing—review and editing. OK: resources. ASG: conceptualization, methodology, investigation, validation, writing—review and editing, and supervision.

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Correspondence to Ali Saffet Gonul.

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The authors declare that they have no conflict of interest.

Ethics approval

This study was reviewed and approved by Ege University Ethics Committee (Approval no.: 09-2.1/3). The authors assert that all procedures contributing to this work comply with the ethical standards of the relevant national and institutional committees on human experimentation and with the Helsinki Declaration of 1975, as revised in 2008.

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Written informed consent was obtained from all participants to participate in this study.

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Appendix

Appendix

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Table 6 Hippocampal subfield comparisons

6,

Table 7 Amygdala nuclei comparisons

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Table 8 Cortical thickness comparisons

8.

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Burhanoglu, B.B., Dinçer, G., Yilmaz, A. et al. Brain areas associated with resilience to depression in high-risk young women. Brain Struct Funct 226, 875–888 (2021). https://doi.org/10.1007/s00429-021-02215-w

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  • DOI: https://doi.org/10.1007/s00429-021-02215-w

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