Hilâl Cerit1,2, Paul Davidson2,3,4, Taryn Hye1, Priyanka Moondra1, Florina Haimovici2,3, Stephanie Sogg2,5,6, Scott Shikora2,4, Jill M Goldstein1,2,6,7,8, A Eden Evins2,6,7, Susan Whitfield-Gabrieli9, Luke E Stoeckel2,6,10, Laura M Holsen1,2,3. 1. Division of Women's Health, Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA. 2. Harvard Medical School, Boston, Massachusetts, USA. 3. Department of Psychiatry, Brigham and Women's Hospital, Boston, Massachusetts, USA. 4. Center for Metabolic and Bariatric Surgery, Department of Surgery, Brigham and Women's Hospital, Boston, Massachusetts, USA. 5. MGH Weight Center, Massachusetts General Hospital, Boston, Massachusetts, USA. 6. Department of Psychiatry, Massachusetts General Hospital, Boston, Massachusetts, USA. 7. Division of Psychiatric Neuroscience, Athinoula A. Martinos Center, Massachusetts General Hospital, Boston, Massachusetts, USA. 8. Department of Obstetrics & Gynecology, Massachusetts General Hospital, Boston, Massachusetts, USA. 9. College of Science, Northeastern University Biomedical Imaging Center, Northeastern University, Boston Massachusetts, USA. 10. Division of Diabetes, Endocrinology, and Metabolic Diseases, National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, Maryland, USA.
Abstract
OBJECTIVE: The effects of sleeve gastrectomy (SG) on functional connectivity (FC) and associations with weight loss and eating-related cognitive control were investigated. METHODS: In a longitudinal study, 14 SG patients (13 female; 42.1 presurgery BMI) completed study visits 1 month pre surgery and 12 months post surgery. Patients completed the Dutch Eating Behavior Questionnaire and resting-state functional magnetic resonance imaging scanning to measure FC. Data were analyzed using a seed-to-voxel approach in the CONN Toolbox to investigate pre-/postsurgery changes (n = 12) and to conduct predictive analysis (n = 14). RESULTS: Seed-to-voxel analysis revealed changes in magnitude (decreases) and directionality (positively correlated to anticorrelated) of FC pre to post surgery within and between default mode network, salience network, and frontoparietal network nodes [Family-Wise Error (FWE) corrected at P < 0.05]. Baseline FC of the nucleus accumbens (with insula) and hypothalamus (with precentral gyrus) predicted 12-month post-SG % total weight loss (FWE-P < 0.05). Baseline FC of the hippocampus, frontoparietal network, and default mode network nodes predicted improvement in cognitive control of eating behavior 12 months after SG (FWE-P < 0.05). CONCLUSIONS: Our findings demonstrate changes in FC magnitude and directionality post versus pre surgery within and between resting-state networks and frontal, paralimbic, and visual areas in SG patients. Baseline FC predicted weight loss and changes in cognitive control of food intake behavior at 12 months. These could serve as predictive biomarkers for bariatric surgery.
OBJECTIVE: The effects of sleeve gastrectomy (SG) on functional connectivity (FC) and associations with weight loss and eating-related cognitive control were investigated. METHODS: In a longitudinal study, 14 SG patients (13 female; 42.1 presurgery BMI) completed study visits 1 month pre surgery and 12 months post surgery. Patients completed the Dutch Eating Behavior Questionnaire and resting-state functional magnetic resonance imaging scanning to measure FC. Data were analyzed using a seed-to-voxel approach in the CONN Toolbox to investigate pre-/postsurgery changes (n = 12) and to conduct predictive analysis (n = 14). RESULTS: Seed-to-voxel analysis revealed changes in magnitude (decreases) and directionality (positively correlated to anticorrelated) of FC pre to post surgery within and between default mode network, salience network, and frontoparietal network nodes [Family-Wise Error (FWE) corrected at P < 0.05]. Baseline FC of the nucleus accumbens (with insula) and hypothalamus (with precentral gyrus) predicted 12-month post-SG % total weight loss (FWE-P < 0.05). Baseline FC of the hippocampus, frontoparietal network, and default mode network nodes predicted improvement in cognitive control of eating behavior 12 months after SG (FWE-P < 0.05). CONCLUSIONS: Our findings demonstrate changes in FC magnitude and directionality post versus pre surgery within and between resting-state networks and frontal, paralimbic, and visual areas in SG patients. Baseline FC predicted weight loss and changes in cognitive control of food intake behavior at 12 months. These could serve as predictive biomarkers for bariatric surgery.
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