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A Highly Polymorphic Copy Number Variant in the NSF Gene is Associated with Cocaine Dependence
Cabana-Domínguez, Judith; Roncero, Carlos; Grau-López, Lara; Rodríguez-Cintas, Laia; Barral, Carmen; Abad, Alfonso C.; Erikson, Galina; Wineinger, Nathan E; Torrico Aviles, Bàrbara; Arenas Solà, Concepción; Casas, Miquel; Ribasés, Marta; Cormand Rifà, Bru; Fernàndez-Castillo, Noelia
Universitat de Barcelona
Cocaine dependence is a complex psychiatric disorder involving both genetic and environmental factors. Several neurotransmitter systems mediate cocaine's effects, dependence and relapse, being the components of the neurotransmitter release machinery good candidates for the disorder. Previously, we identified a risk haplotype for cocaine dependence in the NSF gene, encoding the protein N-Ethylmaleimide-Sensitive Factor essential for synaptic vesicle turnover. Here we examined the possible contribution to cocaine dependence of a large copy number variant (CNV) that encompasses part of the NSF gene. We performed a case-control association study in a discovery sample (359 cases and 356 controls) and identified an association between cocaine dependence and the CNV (P=0.013), that was confirmed in the replication sample (508 cases and 569 controls, P=7.1e-03) and in a pooled analysis (P=1.8e-04), with an over-representation of low number of copies in cases. Subsequently, we studied the functional impact of the CNV on gene expression and found thatthe levels of two NSF transcripts were significantly increased in peripheral blood mononuclear cells (PBMC) along with the number of copies of the CNV. These results, together with a previous study from our group, support the role of NSF in the susceptibility to cocaine dependence
Expressió gènica
Drogoaddicció
Polimorfisme genètic
Gene expression
Drug addiction
Genetic polymorphisms
cc-by (c) Cabana-Domínguez, Judith et al., 2016
http://creativecommons.org/licenses/by/3.0/es
Artículo
info:eu-repo/semantics/publishedVersion
Nature Publishing Group
         

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