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• W2942807839 abstract "Abstract Objectives Fatigue is a major burden among patients with RA, yet is poorly understood. We sought to conduct the first imaging study to investigate the neurobiological correlates of fatigue in RA and to improve upon the methodological limitations of previous neuroimaging studies that have investigated this symptom in other populations. Methods Chronically fatigued RA patients were clinically characterized before undertaking a combined functional and structural mode MRI brain scan. The functional sequences were acquired during a fatigue-evoking task, then network-to-whole-brain analyses were undertaken. The structural analyses employed voxel-based morphometry in order to quantify regional grey matter volume. The scan was repeated 6 months later to test reproducibility. Results Fifty-four participants attended both scans [n = 41 female; baseline mean (s.d.) age 54.94 (11.41) years]. A number of significant functional and structural neural imaging correlates of fatigue were identified. Notably, patients who reported higher levels of fatigue demonstrated higher levels of functional connectivity between the Dorsal Attention Network and medial prefrontal gyri, a finding that was reproduced in the repeat scans. Structurally, greater putamen grey matter volumes significantly correlated with greater levels of fatigue. Conclusion Fatigue in RA is associated with functional and structural MRI changes in the brain. The newly identified and reproduced neural imaging correlates provide a basis for future targeting and stratification of this key patient priority." @default.
• W2942807839 created "2019-05-09" @default.
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• W2942807839 date "2019-04-28" @default.
• W2942807839 modified "2023-10-02" @default.
• W2942807839 title "Functional and structural magnetic resonance imaging correlates of fatigue in patients with rheumatoid arthritis" @default.
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• W2942807839 doi "https://doi.org/10.1093/rheumatology/kez132" @default.
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• W2942807839 hasPublicationYear "2019" @default.
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