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Título:
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Role of neurotrophins in depressive symptoms and executive function: association analysis of NRN1 gene and its interaction with BDNF gene in a non-clinical sample
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Autor/a:
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Prats, Claudia; Arias Sampériz, Bárbara; Ortet i Fabregat, Generós; Ibáñez Ribes, Manuel Ignacio; Moya Higueras, Jorge; Pomarol-Clotet, Edith; Fañanás Saura, Lourdes; Fatjó-Vilas, Mar
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Notas:
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Background: Neuritin-1 is a neurotrophic factor involved in synaptic plasticity that has been associated with depressive disorders, schizophrenia and cognitive performance. The study of genotype-phenotype relationships in healthy individuals is a useful framework to investigate the etiology of brain dysfunctions. We therefore aimed to investigate in a non-clinical sample whether NRN1 gene contributes to the psychopathological profile, with a particular focus on the clinical dimensions previously related to the NRN1 gene (i.e. depressive and psychotic). Furthermore, we aimed to analyze: i) the role of NRN1 on executive functions, ii) whether the association between either NRN1-psychopathological profile or NRN1-cognitive performance is moderated by the BDNF gene. Methods: The sample is comprised of 410 non-clinical subjects who filled in the self-reported Brief Symptom Inventory (BSI) and were assessed for executive performance (Verbal Fluency, Wisconsin Card Sorting Test (WCST) and Letter-Number subscale (WAIS-III)). Genotyping included nine SNPs in NRN1 and one in BDNF. Results: i) GG homozygotes (rs1475157-NRN1) showed higher scores on BSI depressive dimension and on total scores compared to A carriers (corrected p-values: 0.0004 and 0.0003, respectively). ii) A linear trend was detected between GG genotype of rs1475157 and a worse cognitive performance in WCST total correct responses (uncorrected p-value: 0.029). iii) Interaction between rs1475157-NRN1 and Val66Met-BDNF was found to modulate depressive symptoms (p=0.001, significant after correction). Limitations: Moderate sample size; replication in a larger sample is needed. Conclusions: NRN1 is associated with depressive symptoms and executive function in a non-clinical sample. Our results also suggest that the role of NRN1 seems to be modulated by BDNF.
This study was supported by: i) Intramural Project CIBERSAM (P91E), ii) The Network of European Funding for Neuroscience Research, ERA-NET NEURON (PiM2010ERN-00642), iii) Instituto de Salud Carlos III through the project PI15/01420 (co-funded by European Regional Development Fund /European Social Fund, “Investing in your future”). Thanks to: i) the Comissionat per a Universitats i Recerca del DIUE (2014SGR1636), ii) Universitat de Barcelona and APIF-IBUB grant 2014. |
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Materia(s):
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-Depressive symptoms
-Executive function
-NRN1 gene
-Bdnf val66met
-Gene-gene interaction
-Depressió psíquica
-Malalties mentals
-Psicologia genètica
-Mental depression
-Mental illness
-Genetic psychology |
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Derechos:
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(c) Elsevier, 2017
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Tipo de documento:
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Artículo
Artículo - Versión presentada |
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Editor:
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Elsevier
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Compartir:
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