Christina S McCrae1, Jennifer M Mundt2, Ashley F Curtis1, Jason G Craggs1, Andrew M O'Shea3, Roland Staud4, Richard B Berry5, William M Perlstein3, Michael E Robinson3. 1. Department of Psychiatry, University of Missouri, Columbia, Missouri. 2. Durham VA Medical Center, Durham, Virginia. 3. Department of Clinical and Health Psychology, University of Florida, Gainesville, Florida. 4. Department of Rheumatology and Clinical Immunology, University of Florida, Gainesville, Florida. 5. Division of Pulmonary, Critical Care and Sleep Medicine, University of Florida, Gainesville, Florida.
Abstract
STUDY OBJECTIVES:Insomnia frequently co-occurs with fibromyalgia, which is associated with gray matter atrophy. We examined the effect of cognitive behavioral therapy for insomnia (CBT-I) and pain (CBT-P) on cortical thickness. METHODS:Patients with fibromyalgia and insomnia underwent MRI before and after random assignment to CBT-I (n = 14), CBT-P (n = 16), or waitlist control (WLC; n = 7). RESULTS: Repeated-measures analyses of variance revealed significant interactions for two regions (left lateral orbitofrontal cortex, left rostral middle frontal, Ps < .05) and trends for four regions (right medial orbitofrontal cortex, right posterior cingulate, left caudal middle frontal, left transverse temporal; Ps < .10). Cortical thickness increased in all regions for CBT-I and decreased in five regions for CBT-P and WLC. Hierarchical regressions revealed that for the CBT-I group, reductions in wake after sleep onset were associated with an increase in cortical thickness. CONCLUSIONS: Our pilot study presents novel evidence suggesting that CBT-I may slow or reverse cortical gray matter atrophy in patients with fibromyalgia and insomnia. CLINICAL TRIAL REGISTRATION: Registry: ClinicalTrials.gov, Identifier: NCT02001077, Title: Sleep and Pain Interventions in Fibromyalgia (SPIN), URL: https://clinicaltrials.gov/ct2/show/NCT02001077.
RCT Entities:
STUDY OBJECTIVES:Insomnia frequently co-occurs with fibromyalgia, which is associated with gray matter atrophy. We examined the effect of cognitive behavioral therapy for insomnia (CBT-I) and pain (CBT-P) on cortical thickness. METHODS:Patients with fibromyalgia and insomnia underwent MRI before and after random assignment to CBT-I (n = 14), CBT-P (n = 16), or waitlist control (WLC; n = 7). RESULTS: Repeated-measures analyses of variance revealed significant interactions for two regions (left lateral orbitofrontal cortex, left rostral middle frontal, Ps < .05) and trends for four regions (right medial orbitofrontal cortex, right posterior cingulate, left caudal middle frontal, left transverse temporal; Ps < .10). Cortical thickness increased in all regions for CBT-I and decreased in five regions for CBT-P and WLC. Hierarchical regressions revealed that for the CBT-I group, reductions in wake after sleep onset were associated with an increase in cortical thickness. CONCLUSIONS: Our pilot study presents novel evidence suggesting that CBT-I may slow or reverse cortical gray matter atrophy in patients with fibromyalgia and insomnia. CLINICAL TRIAL REGISTRATION: Registry: ClinicalTrials.gov, Identifier: NCT02001077, Title: Sleep and Pain Interventions in Fibromyalgia (SPIN), URL: https://clinicaltrials.gov/ct2/show/NCT02001077.
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