Mega-analysis of association between obesity and cortical morphology in bipolar disorders: ENIGMA study in 2832 participants

ABSTRACT: Background: Obesity is highly prevalent and disabling, especially in individuals with severe mental illness including bipolar disorders (BD). The brain is a target organ for both obesity and BD. Yet, we do not understand how cortical brain alterations in BD and obesity interact. Methods: We obtained body mass index (BMI) and MRI-derived regional cortical thickness, surface area from 1231 BD and 1601 control individuals from 13 countries within the ENIGMA-BD Working Group. We jointly modeled the statistical effects of BD and BMI on brain structure using mixed effects and tested for interaction and mediation. We also investigated the impact of medications on the BMI-related associations. Results: BMI and BD additively impacted the structure of many of the same brain regions. Both BMI and BD were negatively associated with cortical thickness, but not surface area. In most regions the number of jointly used psychiatric medication classes remained associated with lower cortical thickness when controlling for BMI. In a single region, fusiform gyrus, about a third of the negative association between number of jointly used psychiatric medications and cortical thickness was mediated by association between the number of medications and higher BMI. Conclusions: We confirmed consistent associations between higher BMI and lower cortical thickness, but not surface area, across the cerebral mantle, in regions which were also associated with BD. Higher BMI in people with BD indicated more pronounced brain alterations. BMI is important for understanding the neuroanatomical changes in BD and the effects of psychiatric medications on the brain.

• Autores: Díaz Zuluaga, Ana María; López Jaramillo, Carlos Alberto; Vargas Upegui, Cristian David; Abé, Christoph; Alda, Martin; Benedetti, Francesco; Bøen, Erlend; Bonnin, Caterina Del Mar; Borgers, Tiana; Brosch, Katharina; Canales Rodríguez, Erick J.; Cannon, Dara M.; Dannlowski, Udo; Dietze, Lorielle M. F.; Elvsåshagen, Torbjørn; Eyler, Lisa T.; Fullerton, Janice M.; Goikolea, Jose M.; Goltermann, Janik; Grotegerd, Dominik; Haarman, Bartholomeus C M; Hahn, Tim; Howells, Fleur M Howells; Ingvar, Martin; Jahanshad, Neda; Kircher, Tilo T. J.; Krug, Axel; Kuplicki, Rayus T.; Landén, Mikael; Lemke, Hannah; Liberg, Benny; Malt, Ulrik F.; Martyn, Fiona M.; Mazza, Elena; McDonald, Colm; McPhilemy, Genevieve; Meier, Sandra; Meinert, Susanne; Meller, Tina; Melloni, Elisa M. T.; Mitchell, Philip B.; Nabulsi, Leila; Nenadic, Igor; Opel, Nils; Ophoff, Roel A; Overs, Bronwyn J.; Pfarr, Julia Katharina; Pineda Zapata, Julián Alberto; Pomarol Clotet, Edith; Raduà, Joaquim; Repple, Jonathan; Richter, Maike; Ringwald, Kai G.; Roberts, Gloria; Ross, Alex; Salvador, Raymond; Savitz, Jonathan; Schmitt, Simon; Schofield, Peter R.; Sim, Kang; Stein, Dan J.; Stein, Frederike; Temmingh, Henk S.; Thiel, Katharina; Thomopoulos, Sophia I.; van Haren, Neeltje E. M.; McWhinney, Sean R.; Vieta, Eduard; Vreeker, Annabel; Waltemate, Lena; Yatham, Lakshmi N.; Ching, Christopher R. K.; Andreassen, Ole A.; Thompson, Paul M.; Hajek, Tomas
• Tipo de recurso: Article of investigation
• Fecha de publicación: 2023
• Institución: Universidad de Antioquia
• Repositorio: Repositorio UdeA
• Idioma: eng
• OAI Identifier: oai:bibliotecadigital.udea.edu.co:10495/42114
• Acceso en línea: https://hdl.handle.net/10495/42114
• Palabra clave: Índice de Masa Corporal; Body Mass Index; Trastorno Bipolar; Bipolar Disorder; Antipsicóticos; Antipsychotic Agents; Grosor de la Corteza Cerebral; Brain Cortical Thickness; Heterogeneidad del Efecto del Tratamiento; Treatment Effect Heterogeneity; Obesidad; Obesity; Litio; Lithium; Superficie Corporal; Body Surface Area; https://id.nlm.nih.gov/mesh/D015992; https://id.nlm.nih.gov/mesh/D001714; https://id.nlm.nih.gov/mesh/D014150; https://id.nlm.nih.gov/mesh/D000082642; https://id.nlm.nih.gov/mesh/D000096962; https://id.nlm.nih.gov/mesh/D009765; https://id.nlm.nih.gov/mesh/D008094; https://id.nlm.nih.gov/mesh/D001830
• Rights: openAccess
• License: http://creativecommons.org/licenses/by-nc-nd/2.5/co/