Gray matter volume covariance networks are associated with altered emotional processing in bipolar disorder: a source-based morphometry study

AbstractWidespread regional gray matter volume (GMV) alterations have been reported in bipolar disorder (BD). Structural networks, which are thought to better reflect the complex multivariate organization of the brain, and their clinical and psychological function have not been investigated yet in BD. 24 patients with BD type-I (BD-I), and 30 with BD type-II (BD-II), and 45 controls underwent MRI scan. Voxel-based morphometry and source-based morphometry (SBM) were performed to extract structural covariation patterns of GMV. SBM components associated with morphometric differences were compared among diagnoses. Executive function and emotional processing correlated with morphometric characteristics. Compared to controls, BD-I showed reduced GMV in the temporo-insular-parieto-occipital cortex and in the culmen. An SBM component spanning the prefrontal-temporal-occipital network exhibited significantly lower GMV in BD-I compared to controls, but not between the other groups. The structural network covariance in BD-I was associated with the number of previous manic episodes and with worse executive performance. Compared to BD-II, BD-I showed a loss of GMV in the temporal-occipital regions, and this was correlated with impaired emotional processing. Altered prefrontal-temporal-occipital network structure could reflect a neural signature associated with visuospatial processing and problem-solving impairments as well as emotional processing and illness severity in BD-I.

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The gray matter volume of the right insula mediates the relationship between symptoms of depression/anxiety and sleep quality among college students

Journal of Health Psychology ◽

10.1177/1359105319869977 ◽

2019 ◽

pp. 135910531986997 ◽

Cited By ~ 1

Author(s):

Huazhan Yin ◽

Li Zhang ◽

Dan Li ◽

Lu Xiao ◽

Mei Cheng

Keyword(s):

College Students ◽

Sleep Quality ◽

Gray Matter ◽

Emotional Processing ◽

Gray Matter Volume ◽

Critical Role ◽

Symptoms Of Depression ◽

Matter Volume ◽

The Right ◽

The Relationship

This study investigated the neuroanatomical basis of the association between depression/anxiety and sleep quality among 370 college students. The results showed that there was a significant correlation between sleep quality and depression/anxiety. Moreover, mediation results showed that the gray matter volume of the right insula mediated the relationship between depression/anxiety and sleep quality, which suggested that depression/anxiety may affect sleep quality through the right insula volume. These findings confirmed a strong link between sleep quality and depression/anxiety, while highlighting the volumetric variation in the right insula associated with emotional processing, which may play a critical role in improving sleep quality.

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A History of Psychosis in Bipolar Disorder is Associated With Gray Matter Volume Reduction

Schizophrenia Bulletin ◽

10.1093/schbul/sbw080 ◽

2016 ◽

Vol 43 (1) ◽

pp. 99-107 ◽

Cited By ~ 13

Author(s):

Carl Johan Ekman ◽

Predrag Petrovic ◽

Anette G. M. Johansson ◽

Carl Sellgren ◽

Martin Ingvar ◽

...

Keyword(s):

Bipolar Disorder ◽

Gray Matter ◽

Gray Matter Volume ◽

Volume Reduction ◽

Matter Volume ◽

History Of

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P.2.d.024 Lithium and GSK-3β promoter gene variants influence gray matter volume in bipolar disorder

European Neuropsychopharmacology ◽

10.1016/s0924-977x(14)70682-0 ◽

2014 ◽

Vol 24 ◽

pp. S427 ◽

Cited By ~ 1

Author(s):

S. Poletti ◽

C. Locatelli ◽

D. Radaelli ◽

C. Colombo ◽

F. Benedetti

Keyword(s):

Bipolar Disorder ◽

Gray Matter ◽

Gray Matter Volume ◽

Gene Variants ◽

Matter Volume ◽

Promoter Gene ◽

Gsk 3Β

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Preservation of Gray Matter Volume in Early Stage of Bipolar Disorder: A Case for Early Intervention

The Canadian Journal of Psychiatry ◽

10.1177/0706743720927827 ◽

2020 ◽

pp. 070674372092782 ◽

Cited By ~ 1

Author(s):

Kamyar Keramatian ◽

Wayne Su ◽

Gayatri Saraf ◽

Trisha Chakrabarty ◽

Lakshmi N. Yatham

Keyword(s):

Bipolar Disorder ◽

Gray Matter ◽

Early Stage ◽

Gray Matter Volume ◽

Volume Changes ◽

Matter Volume ◽

History Of ◽

Bipolar Patients ◽

Gray Matter Volumes ◽

Healthy Participants

Objective: It has been proposed that different stages of the bipolar disorder might have distinct neurobiological changes. However, the evidence for this has not been consistent, as the studies in early stages of the illness are limited by small sample sizes. The purpose of this study was to investigate the gray matter volume changes in bipolar patients who recently recovered from their first episode of mania (FEM). Methods: Using a whole-brain voxel-based analysis, we compared the regional gray matter volumes of 61 bipolar patients who have recovered from their FEM in the past 3 months with 43 age- and gender-matched healthy participants. We also performed a series of subgroup analyses to determine the effects of hospitalization during the FEM, history of depressive episodes, and exposure to lithium. Results: No statistically significant difference was found between gray matter volumes of FEM patients and healthy participants, even at a more liberal threshold ( P < 0.001, uncorrected for multiple comparisons). Voxel-based subgroup analyses did not reveal significant gray matter differences except for a trend toward decreased gray matter volume in left lateral occipital cortex ( P < 0.001, uncorrected) in patients with a previous history of depression. Conclusion: This study represents the largest structural neuroimaging investigation of FEM published to date. Early stage of bipolar disorder was not found to be associated with significant gray matter volume changes. Our findings suggest that there might be a window of opportunity for early intervention strategies to prevent or delay neuroprogression in bipolar disorder.

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