Stratifying patients with affective disorders by resting limbic connectivity predicts cognitive bias
Patients with Generalized Anxiety Disorder (GAD) and Major Depressive Disorder (MDD) show between-group comorbidity and symptom overlap, and within-group heterogeneity. Resting state functional connectivity might provide an alternate, biologically informed means by which to stratify patients with GA...
| Main Authors: | , , , , , , , , |
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| Format: | Journal article |
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Elsevier
2018
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| _version_ | 1797084221585489920 |
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| author | Bijsterbosch, J Ansari, T Smith, S Gauld, O Zika, O Boessenkool, S Browning, M Reinecke, A Bishop, S |
| author_facet | Bijsterbosch, J Ansari, T Smith, S Gauld, O Zika, O Boessenkool, S Browning, M Reinecke, A Bishop, S |
| author_sort | Bijsterbosch, J |
| collection | OXFORD |
| description | Patients with Generalized Anxiety Disorder (GAD) and Major Depressive Disorder (MDD) show between-group comorbidity and symptom overlap, and within-group heterogeneity. Resting state functional connectivity might provide an alternate, biologically informed means by which to stratify patients with GAD or MDD. Resting state functional magnetic resonance imaging data were acquired from 23 adults with GAD, 21 adults with MDD, and 27 healthy adult control participants. We investigated whether within- or between-network connectivity indices from five resting state networks predicted scores on continuous measures of depression and anxiety. Successful predictors were used to stratify participants into two new groups. We examined whether this stratification predicted attentional bias towards threat and whether this varied between patients and controls. Depression scores were linked to elevated connectivity within a limbic network including the amygdala, hippocampus, VMPFC and subgenual ACC. Patients with GAD or MDD with high limbic connectivity showed poorer performance on an attention-to-threat task than patients with low limbic connectivity. No parallel effect was observed for control participants, resulting in an interaction of clinical status by resting state group. Our findings provide initial evidence for the external validity of stratification of MDD and GAD patients by functional connectivity markers. This stratification cuts across diagnostic boundaries and might valuably inform future intervention studies. Our findings also highlight that biomarkers of interest can have different cognitive correlates in individuals with versus without clinically significant symptomatology. This might reflect protective influences leading to resilience in some individuals but not others. |
| first_indexed | 2024-03-07T01:52:23Z |
| format | Journal article |
| id | oxford-uuid:9a8ed650-1885-4aa6-80de-b75e4eb4cda5 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T01:52:23Z |
| publishDate | 2018 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:9a8ed650-1885-4aa6-80de-b75e4eb4cda52022-03-27T00:22:08ZStratifying patients with affective disorders by resting limbic connectivity predicts cognitive biasJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:9a8ed650-1885-4aa6-80de-b75e4eb4cda5Symplectic Elements at OxfordElsevier2018Bijsterbosch, JAnsari, TSmith, SGauld, OZika, OBoessenkool, SBrowning, MReinecke, ABishop, SPatients with Generalized Anxiety Disorder (GAD) and Major Depressive Disorder (MDD) show between-group comorbidity and symptom overlap, and within-group heterogeneity. Resting state functional connectivity might provide an alternate, biologically informed means by which to stratify patients with GAD or MDD. Resting state functional magnetic resonance imaging data were acquired from 23 adults with GAD, 21 adults with MDD, and 27 healthy adult control participants. We investigated whether within- or between-network connectivity indices from five resting state networks predicted scores on continuous measures of depression and anxiety. Successful predictors were used to stratify participants into two new groups. We examined whether this stratification predicted attentional bias towards threat and whether this varied between patients and controls. Depression scores were linked to elevated connectivity within a limbic network including the amygdala, hippocampus, VMPFC and subgenual ACC. Patients with GAD or MDD with high limbic connectivity showed poorer performance on an attention-to-threat task than patients with low limbic connectivity. No parallel effect was observed for control participants, resulting in an interaction of clinical status by resting state group. Our findings provide initial evidence for the external validity of stratification of MDD and GAD patients by functional connectivity markers. This stratification cuts across diagnostic boundaries and might valuably inform future intervention studies. Our findings also highlight that biomarkers of interest can have different cognitive correlates in individuals with versus without clinically significant symptomatology. This might reflect protective influences leading to resilience in some individuals but not others. |
| spellingShingle | Bijsterbosch, J Ansari, T Smith, S Gauld, O Zika, O Boessenkool, S Browning, M Reinecke, A Bishop, S Stratifying patients with affective disorders by resting limbic connectivity predicts cognitive bias |
| title | Stratifying patients with affective disorders by resting limbic connectivity predicts cognitive bias |
| title_full | Stratifying patients with affective disorders by resting limbic connectivity predicts cognitive bias |
| title_fullStr | Stratifying patients with affective disorders by resting limbic connectivity predicts cognitive bias |
| title_full_unstemmed | Stratifying patients with affective disorders by resting limbic connectivity predicts cognitive bias |
| title_short | Stratifying patients with affective disorders by resting limbic connectivity predicts cognitive bias |
| title_sort | stratifying patients with affective disorders by resting limbic connectivity predicts cognitive bias |
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