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Pérez-Gutiérrez AM, Rovira P, Gutiérrez B, Cervilla JA, Zarza-Rebollo JA, Molina E, Rivera M. Influence of BDNF Val66Met genetic polymorphism in Major Depressive Disorder and Body Mass Index: Evidence from a meta-analysis of 6481 individuals. J Affect Disord 2024; 344:458-465. [PMID: 37820958 DOI: 10.1016/j.jad.2023.10.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 09/07/2023] [Accepted: 10/08/2023] [Indexed: 10/13/2023]
Abstract
BACKGROUND Major depressive disorder (MDD) and obesity are global health problems that frequently co-occur. Among shared etiological factors, genetic variation at the brain-derived neurotrophic factor (BDNF) gene is interesting since its implication in energy balance regulation, food intake and synaptic function. Thus, the aim of this study was to investigate the influence of the BDNF Val66Met polymorphism in relation to MDD and body mass index (BMI) in two large independent cohorts. METHODS The sample consisted of 2646 individuals with MDD and 3835 controls from the PISMA-ep and Radiant studies. Linear regressions were performed to test the association between the polymorphism and BMI and the interaction between the polymorphism and MDD on BMI. A meta-analysis across cohorts was conducted. RESULTS No association was found between the polymorphism and BMI. However, we found an association with MDD, showing these individuals higher BMI than controls in both cohorts. No differences were found in BMI depending on Val66Met genotype and no interaction between this polymorphism and MDD in relation to BMI was found. Although a tendency towards an interaction was found in the Radiant sample, the results of the meta-analysis did not support this finding. LIMITATIONS The use of self-reported height and weight measures to calculate BMI values. CONCLUSIONS We provide evidence for an association between BMI and MDD confirming previous results. Our meta-analysis including two large cohorts showed no interaction between BDNF, BMI and MDD. Future studies will be needed to confirm the role of this polymorphism in the relationship between BMI and MDD.
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Affiliation(s)
- A M Pérez-Gutiérrez
- Instituto de Neurociencias, Centro de Investigación Biomédica (CIBM), Universidad de Granada, Granada, Spain; Instituto de Investigación Biosanitaria ibs.Granada, Granada, Spain; Departamento de Bioquímica y Biología Molecular II, Facultad de Farmacia, Universidad de Granada, Granada, Spain
| | - P Rovira
- Instituto de Neurociencias, Centro de Investigación Biomédica (CIBM), Universidad de Granada, Granada, Spain; Instituto de Investigación Biosanitaria ibs.Granada, Granada, Spain; Departamento de Psiquiatría, Facultad de Medicina, Universidad de Granada, Granada, Spain; Vicerectorat de Recerca, Investigadora postdoctoral Margarita Salas, Universitat de Barcelona, Barcelona, Spain
| | - B Gutiérrez
- Instituto de Neurociencias, Centro de Investigación Biomédica (CIBM), Universidad de Granada, Granada, Spain; Instituto de Investigación Biosanitaria ibs.Granada, Granada, Spain; Departamento de Psiquiatría, Facultad de Medicina, Universidad de Granada, Granada, Spain
| | - J A Cervilla
- Instituto de Neurociencias, Centro de Investigación Biomédica (CIBM), Universidad de Granada, Granada, Spain; Instituto de Investigación Biosanitaria ibs.Granada, Granada, Spain; Departamento de Psiquiatría, Facultad de Medicina, Universidad de Granada, Granada, Spain
| | - J A Zarza-Rebollo
- Instituto de Neurociencias, Centro de Investigación Biomédica (CIBM), Universidad de Granada, Granada, Spain; Instituto de Investigación Biosanitaria ibs.Granada, Granada, Spain; Departamento de Bioquímica y Biología Molecular II, Facultad de Farmacia, Universidad de Granada, Granada, Spain
| | - E Molina
- Instituto de Neurociencias, Centro de Investigación Biomédica (CIBM), Universidad de Granada, Granada, Spain; Instituto de Investigación Biosanitaria ibs.Granada, Granada, Spain; Departamento de Enfermería, Facultad de Ciencias de la Salud, Universidad de Granada, Granada, Spain.
| | - M Rivera
- Instituto de Neurociencias, Centro de Investigación Biomédica (CIBM), Universidad de Granada, Granada, Spain; Instituto de Investigación Biosanitaria ibs.Granada, Granada, Spain; Departamento de Bioquímica y Biología Molecular II, Facultad de Farmacia, Universidad de Granada, Granada, Spain.
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