Cited by 129Functional Brain Connectivity StudiesSuicide and Self-Harm StudiesTreatment of Major Depression

Fronto-limbic disconnection in depressed patients with suicidal ideation: A resting-state functional connectivity study

Du, Lian, Zeng, Jinkun, Liu, Huan, Tang, Dejian, Meng, Huaqing, Li, Yongmei, Fu, Yixiao·2017·Journal of Affective Disorders

Abstract

Background Suicidal ideation (SI) is highly prevalent and a known symptom of Major Depressive Disorder (MDD), but its underlying biological mechanisms are relatively unknown. Several studies linked suicidal ideation to dysfunctional brain circuits, specifically fronto-limbic connections. The purpose of this work was to investigate fronto-limbic disconnection in MDD patients with or without SI.Methods MDD patients with SI (SI, n=28) or without SI (NSI, n=20), identified by the Scale for Suicide Ideation and healthy controls (HCs, n=30) underwent resting-state functional MRI scanning. The functional properties of correlations in neural activity (intrinsic functional connectivity, iFC) of the rostral anterior cingulate cortex (rACC) were analyzed among the three groups. Furthermore, correlation analyses between iFC, SI severity and depression severity were performed.Results We found that the SI group exhibited decreased iFC between the rACC, the orbitomedial prefrontal cortex and the right middle temporal pole compared to HCs and NSI groups. The NSI group showed decreased iFC between the rACC and the orbitomedial prefrontal cortex compared to HCs. In the SI group, iFC strength between the right rACC and the middle temporal pole positively correlated with SI severity.Conclusion Transdiagnostic and diagnosis-specific alterations of fronto-limbic iFC were found in MDD patients with or without SI. Disrupted fronto-limbic circuits may impact decision-making and emotional processing in SI. These results provide useful information about the pathophysiological mechanisms of MDD patients with SI.

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Crossref · 10.1016/j.jad.2017.02.027

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  • Resting-state fMRI indicates lower functional connectivity in adolescent and adult suicide attempters, predominantly in the default mode network.

    “Resting-state functional MRI (rs-fMRI) indicates lower functional connectivity in adolescent and adult suicide attempters, predominantly in the default mode network, which is implicated in self-referential processing and social cognition (85-87).”

    From A brain-centric model of suicidal behavior (2020) · cites this paper as [86]

  • Other studies have reported lower rs-fMRI activity and functional connectivity, probably due to different outcome measures and heterogeneity of suicidal ideation.

    “However, other studies have reported lower rs-fMRI activity and functional connectivity (85, 86, 92, 93), probably due to use of different outcome measures of rs-fMRI activity, for example, regional homogeneity, fractional amplitude of low-frequency fluctuations among studies, and heterogeneity of suicidal ideation.”

    From A brain-centric model of suicidal behavior (2020) · cites this paper as [86]

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Authors
Du, L., Zeng, J., Liu, H., Tang, D., Meng, H., Li, Y., & Fu, Y.
Affiliations
The Affiliated Yongchuan Hospital of Chongqing Medical University (CN)
Corresponding author
  • Li, Yongmei
  • Fu, Yixiao
Venue
Journal of Affective Disorders
Publisher
Elsevier BV
Published
2017-06
Volume
215
Pages
213-217
ISSN
0165-0327 (ISSN-L)
OpenAlex
W2590906340
Cited by
129
References
47
Citations by year
2026: 8 · 2025: 8 · 2024: 9 · 2023: 11 · 2022: 15 · 2021: 35 · 2020: 13 · 2019: 12 · 2018: 14 · 2017: 4
FWCI
6.75
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Affective Disorders (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Functional Brain Connectivity Studies
  • Social Sciences › Psychology › Clinical Psychology › Suicide and Self-Harm Studies
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
Keywords
suicidal ideation, major depressive disorder, intrinsic functional connectivity, rostral anterior cingulate cortex, resting-state functional connectivity, suicide risk, decision-making, emotional processing
MeSH terms
Adult, Depressive Disorder, Major, Major Depressive Disorder, Emotions, Female, Gyrus Cinguli, Humans, Magnetic Resonance Imaging, Male, Temporal Lobe, Suicidal Ideation

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