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Developing a Rat Model for Bipolar Disorder
Published on: May 2, 2025
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Distinct structural brain circuits indicate mood and apathy profiles in bipolar disorder
Wenhao Jiang1, Ole A Andreassen2, Ingrid Agartz3
1Department of Psychology, Georgia State University, USA.
Neuroimage. Clinical
|August 28, 2019
Summary
Bipolar disorder (BD) patients exhibit distinct mood and apathy symptom profiles linked to specific brain gray matter (GM) alterations. Parallel independent component analysis (pICA) identified these networks, offering new insights into BD pathophysiology.
Area of Science:
- Neuroscience
- Psychiatry
- Medical Imaging
Background:
- Bipolar disorder (BD) is a severe mood disorder.
- Previous studies show gray matter (GM) deficits in BD patients.
- The link between structural brain changes and clinical symptoms in BD remains unclear.
Purpose of the Study:
- To investigate networks of brain regions associated with symptom profiles in bipolar disorder.
- To explore the relationship between structural neuroimaging measures and clinical symptoms using advanced analysis.
Main Methods:
- Applied parallel independent component analysis (pICA) to structural neuroimaging data and the Positive and Negative Syndrome Scale (PANSS) scores.
- Analyzed data from 110 patients diagnosed with bipolar disorder.
- Examined associations between identified brain networks and symptom clusters.
Main Results:
- Two distinct symptom profiles and associated GM concentration alteration circuits were identified via pICA.
- One profile, dominated by mood symptoms (anxiety, depression), correlated with reduced GM in right temporal regions.
- A second profile, characterized by withdrawal and apathy, was linked to lower GM concentration in bilateral parietal and frontal regions.
Conclusions:
- pICA decomposition revealed distinct mood and apathy profiles in bipolar disorder patients.
- These profiles are associated with specific brain structural networks, differing from traditional PANSS subscales.
- Findings suggest distinct neurobiological underpinnings for different symptom presentations in BD.
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