Abnormal regional homogeneity in young adult suicide attempters with no diagnosable psychiatric disorder: A resting state functional magnetic imaging study
Abstract
Many young adults who attempt suicide have no discernible mental illness, suggesting an etiology distinct from other psychiatric disorders. Neurological anomalies associated with a history of suicidal behavior may predict future risk. In the present study, we explored changes in neural circuit organization associated with suicidal behavior by comparing local synchronization of resting-state functional magnetic resonance imaging signals in suicide attempters without a psychiatric diagnosis (SA group, 19.84±1.61 years, n=19) with those in healthy controls (HC group, 20.30±1.72 years, n=20) using regional homogeneity (ReHo) analysis. The SA group exhibited significantly lower mean ReHo in the left (L) fusiform and supraorbital inferior frontal gyri, L hippocampus, bilateral parahippocampal and middle frontal gyri, right (R) angular gyrus, and cerebellar lobules RVIII, RII, and LVI compared with the HC group. Conversely, in the SA group, ReHo was higher in the R supraorbital middle frontal gyrus, R inferior parietal lobe, and L precuneus. The SA group also had significantly higher total Barratt Impulsiveness Scale scores compared with the HC group. Local functional connectivity is altered in multiple regions of the cerebral cortex, limbic system, and cerebellum of suicidal young adults. Elucidating the functional deficits associated with these ReHo changes may clarify the pathophysiological mechanisms of suicidal behavior and assist in identifying high-risk individuals.
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Young adults with lifetime attempt history but no current mental disorders show greater regional homogeneity in MFG, parietal lobe, and precuneus, and reduced ReHo in cerebellum, fusiform, hippocampus, parahippocampal gyrus, angular gyrus, IFG, and MFG compared to healthy controls.
“Young adults with a lifetime attempt history but no current mental disorders show greater regional homogeneity (ReHo; measuring local synchrony) in the middle frontal gyrus (MFG), parietal lobe, and precuneus, and reduced ReHo in the cerebellum, fusiform, hippocampus, parahippocampal gyrus, angular gyrus, IFG, and MFG compared to healthy controls (106).”
From Neural correlates associated with suicide and nonsuicidal self-injury in youth (2021) · cites this paper as [106]
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Non-Constructive Ruminations, Insomnia and Nightmares: Trio of Vulnerabilities to Suicide Risk
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Sports Are Good for Your Mood, But a Concussion Is Not
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Neuroimaging of suicidal behaviour
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Troubles du sommeil et déterminants psychopathologiques
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- Authors
- Cao, J., Chen, J.-M., Kuang, L., Ai, M., Fang, W.-D., Gan, Y., Wang, W., Chen, X.-R., Xu, X.-M., Wang, H.-G., & Lv, Z.
- Affiliations
- The Affiliated Yongchuan Hospital of Chongqing Medical University (CN)
- Chongqing Medical University (CN)
- Corresponding author
- Kuang, Li
- Venue
- Psychiatry Research Neuroimaging
- Publisher
- Elsevier BV
- Published
- 2015-02
- Volume
- 231
- Issue
- 2
- Pages
- 95-102
- ISSN
- 0925-4927 (ISSN-L)
- OpenAlex
- W2089465168
- Cited by
- 64
- References
- 67
- Citations by year
- 2025: 7 · 2024: 8 · 2023: 6 · 2022: 8 · 2021: 9 · 2020: 5 · 2019: 5 · 2018: 2 · 2017: 5 · 2016: 6 · 2015: 3
- FWCI
- 2.60
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Psychiatry Research Neuroimaging (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Special Research Fund for Public Service from the Ministry of Health (201002003)
- National Natural Science Foundation of China (81071118)
- Chongqing Science and Technology Commission (2011BA5010)
- Medicine Scientific Key Research Fund from Chongqing Health Bureau (2009-1-55)
- Topics
- Life Sciences › Neuroscience › Cognitive Neuroscience › Functional Brain Connectivity Studies
- Social Sciences › Psychology › Clinical Psychology › Suicide and Self-Harm Studies
- Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
- Keywords
- suicide attempters, regional homogeneity, resting-state functional connectivity, young adults, impulsivity, Barratt Impulsiveness Scale, fusiform gyrus, hippocampus, cerebellum, parahippocampal gyrus, angular gyrus, precuneus, local synchronization, suicide risk
- MeSH terms
- Adult, Brain Mapping, Cerebellum, Cerebral Cortex, Female, Hippocampus, Humans, Impulsive Behavior, Magnetic Resonance Imaging, Male, Suicide, Attempted, Young Adult
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