DNAJC13 influences responses of the extended reward system to conditioned stimuli: a genome-wide association study
Reward system dysfunction is implicated in the pathogenesis of major psychiatric disorders. We conducted a genome-wide association study (GWAS) to identify genes that influence activation strength of brain regions within the extended reward system in humans. A homogeneous sample of 214 participants...
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| Hauptverfasser: | , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
17 October 2024
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| In: |
European archives of psychiatry and clinical neuroscience
Year: 2025, Jahrgang: 275, Heft: 2, Pages: 499-510 |
| ISSN: | 1433-8491 |
| DOI: | 10.1007/s00406-024-01905-w |
| Online-Zugang: | Verlag, kostenfrei, Volltext: https://doi.org/10.1007/s00406-024-01905-w Verlag, kostenfrei, Volltext: https://link.springer.com/article/10.1007/s00406-024-01905-w 
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| Verfasserangaben: | Jens Treutlein, Karolin E. Einenkel, Bernd Krämer, Swapnil Awasthi, Oliver Gruber |
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| 520 | |a Reward system dysfunction is implicated in the pathogenesis of major psychiatric disorders. We conducted a genome-wide association study (GWAS) to identify genes that influence activation strength of brain regions within the extended reward system in humans. A homogeneous sample of 214 participants was genotyped and underwent functional magnetic resonance imaging (fMRI). All subjects performed the ‘desire-reason dilemma’ (DRD) paradigm allowing systematic investigation of systems-level mechanisms of reward processing in humans. As a main finding, we identified the single nucleotide variant rs113408797 in the DnaJ Heat Shock Protein Family Member C13 gene [DNAJC13], alias Receptor-Mediated Endocytosis 8 [RME-8], that was associated with the activation strength of the ventral tegmental area (VTA; p = 2.50E-07) and the nucleus accumbens (NAcc; p = 5.31E-05) in response to conditioned reward stimuli. Moreover, haplotype analysis assessing the information across the entire DNAJC13 locus demonstrated an impact of a five-marker haplotype on VTA activation (p = 3.21E-07), which further corroborates a link between this gene and reward processing. The present findings provide first direct empirical evidence that genetic variation of DNAJC13 influences neural responses within the extended reward system to conditioned stimuli. Further studies are required to investigate the role of this gene in the pathogenesis and pathophysiology of neuropsychiatric disorders. | ||
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| 650 | 4 | |a Mesolimbic dopamine system | |
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| 650 | 4 | |a Ventral striatum | |
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