TY - JOUR
T1 - Neural Mechanisms of Attention-Deficit/Hyperactivity Disorder Symptoms Are Stratified by MAOA Genotype
AU - Nymberg, Charlotte
AU - Jia, Tianye
AU - Lubbe, Steven
AU - Ruggeri, Barbara
AU - Desrivieres, Sylvane
AU - Barker, Gareth
AU - Buchel, Christian
AU - Fauth-Buehler, Mira
AU - Cattrell, Anna
AU - Conrod, Patricia
AU - Flor, Herta
AU - Gallinat, Juergen
AU - Garavan, Hugh
AU - Heinz, Andreas
AU - Ittermann, Bernd
AU - Lawrence, Claire
AU - Mann, Karl
AU - Nees, Frauke
AU - Salatino-Oliveira, Angelica
AU - Martinot, Marie-Laure Paillere
AU - Paus, Tomas
AU - Rietschel, Marcella
AU - Robbins, Trevor
AU - Smolka, Michael
AU - Banaschewski, Tobias
AU - Rubia, Katya
AU - Loth, Eva
AU - Schumann, Gunter
AU - IMAGEN Consortium
PY - 2013/10/15
Y1 - 2013/10/15
N2 - Background: Attention-deficit/hyperactivity disorder (ADHD) is characterized by deficits in reward sensitivity and response inhibition. The relative contribution of these frontostriatal mechanisms to ADHD symptoms and their genetic determinants is largely unexplored.Methods: Using functional magnetic resonance imaging and genetic analysis of the monoamine oxidase A (MAOA) gene, we investigated how striatal and inferior frontal activation patterns contribute to ADHD symptoms depending on MAOA genotype in a sample of adolescent boys (n = 190).Results: We demonstrate an association of ADHD symptoms with distinct blood oxygen level-dependent (BOLD) responses depending on MAOA genotype. In A hemizygotes of the expression single nucleotide polymorphism rs12843268, which express lower levels of MAOA, ADHD symptoms are associated with lower ventral striatal BOLD response during the monetary incentive delay task and lower inferior frontal gyrus BOLD response during the stop signal task. In G hemizygotes, ADHD symptoms are associated with increased inferior frontal gyrus BOLD response during the stop signal task in the presence of increased ventral striatal BOLD response during the monetary incentive delay task.Conclusions: Depending on MAOA genotype, ADHD symptoms in adolescent boys are associated with either reward deficiency or insufficient response inhibition. Apart from its mechanistic interest, our finding may aid in developing pharmacogenetic markers for ADHD.
AB - Background: Attention-deficit/hyperactivity disorder (ADHD) is characterized by deficits in reward sensitivity and response inhibition. The relative contribution of these frontostriatal mechanisms to ADHD symptoms and their genetic determinants is largely unexplored.Methods: Using functional magnetic resonance imaging and genetic analysis of the monoamine oxidase A (MAOA) gene, we investigated how striatal and inferior frontal activation patterns contribute to ADHD symptoms depending on MAOA genotype in a sample of adolescent boys (n = 190).Results: We demonstrate an association of ADHD symptoms with distinct blood oxygen level-dependent (BOLD) responses depending on MAOA genotype. In A hemizygotes of the expression single nucleotide polymorphism rs12843268, which express lower levels of MAOA, ADHD symptoms are associated with lower ventral striatal BOLD response during the monetary incentive delay task and lower inferior frontal gyrus BOLD response during the stop signal task. In G hemizygotes, ADHD symptoms are associated with increased inferior frontal gyrus BOLD response during the stop signal task in the presence of increased ventral striatal BOLD response during the monetary incentive delay task.Conclusions: Depending on MAOA genotype, ADHD symptoms in adolescent boys are associated with either reward deficiency or insufficient response inhibition. Apart from its mechanistic interest, our finding may aid in developing pharmacogenetic markers for ADHD.
KW - Attention-deficit/hyperactivity disorder
KW - genetics
KW - inferior frontal gyrus
KW - monoamine oxidase A
KW - neuroimaging
KW - ventral striatum
KW - DEFICIT HYPERACTIVITY DISORDER
KW - MONOAMINE-OXIDASE-A
KW - VENTRAL STRIATAL ACTIVITY
KW - REWARD ANTICIPATION
KW - RESPONSE-INHIBITION
KW - PREFERENTIAL TRANSMISSION
KW - PROMOTER POLYMORPHISM
KW - BRAIN ACTIVATION
KW - CONDUCT DISORDER
KW - NOVELTY-SEEKING
KW - Acknowledged-BRC
KW - Acknowledged-BRC-13/14
U2 - 10.1016/j.biopsych.2013.03.027
DO - 10.1016/j.biopsych.2013.03.027
M3 - Article
C2 - 23746540
SN - 1873-2402
VL - 74
SP - 607
EP - 614
JO - Biological psychiatry
JF - Biological psychiatry
IS - 8
M1 - N/A
ER -