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Mouse and human genetic analyses associate kalirin with ventral striatal activation during impulsivity and with alcohol misuse

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posted on 2023-06-12, 06:38 authored by Yolanda Pena-OliverYolanda Pena-Oliver, Fabiana M Carvalho, Sandra Sanchez-Roige, Erin B Quinlan, Tianye Jia, Tom Walker-Tilley, Stuart L Rulten, Frances PearlFrances Pearl, Tobias Banaschewski, Gareth J Barker, Arun L W Bokde, Christian Büchel, Patricia J Conrod, Herta Flor, Jürgen Gallinat, Hugh Garavan, Andreas Heinz, Penny Gowland, Marie-Laure Paillere Martinot, Tomáš Paus, Marcella Rietschel, Trevor W Robbins, Michael N Smolka, Gunter Schumann, David N Stephens, for the IMAGEN Consortium
Impulsivity is associated with a spectrum of psychiatric disorders including drug addiction. To investigate genetic associations with impulsivity and initiation of drug taking, we took a two-step approach. First, we identified genes whose expression level in prefrontal cortex, striatum and accumbens were associated with impulsive behaviour in the 5-choice serial reaction time task across 10 BXD recombinant inbred (BXD RI) mouse strains and their progenitor C57BL/6J and DBA2/J strains. Behavioural data were correlated with regional gene expression using GeneNetwork (www.genenetwork.org), to identify 44 genes whose probability of association with impulsivity exceeded a false discovery rate of <0.05. We then interrogated the IMAGEN database of 1423 adolescents for potential associations of SNPs in human homologues of those genes identified in the mouse study, with brain activation during impulsive performance in the Monetary Incentive Delay task, and with novelty seeking scores from the Temperament and Character Inventory, as well as alcohol experience. There was a significant overall association between the human homologues of impulsivity-related genes and percentage of premature responses in the MID task and with fMRI BOLD-response in ventral striatum (VS) during reward anticipation. In contrast, no significant association was found between the polygenic scores and anterior cingulate cortex activation. Univariate association analyses revealed that the G allele (major) of the intronic SNP rs6438839 in the KALRN gene was significantly associated with increased VS activation. Additionally, the A-allele (minor) of KALRN intronic SNP rs4634050, belonging to the same haplotype block, was associated with increased frequency of binge drinking.

Funding

Reinforcement-related behaviour in normal brain function and psychopathology (IMAGEN) IP; G0102; EUROPEAN UNION; CT-2007-037286

History

Publication status

  • Published

File Version

  • Published version

Journal

Frontiers in Genetics

ISSN

1664-8021

Publisher

Frontiers

Volume

7

Article number

a52

Department affiliated with

  • Biochemistry Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2016-04-11

First Open Access (FOA) Date

2016-04-11

First Compliant Deposit (FCD) Date

2016-04-08

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