Influence of serotonin transporter genotype and catechol-O-methyltransferase Val158Met polymorphism on recognition of emotional faces.
Monoamines, such as serotonin, dopamine, and norepinephrine, play a crucial role in the regulation of emotion processing and mood. In this study, we investigated how polymorphisms of the serotonin transporter (5-HTT) and catechol-O-methyltransferase (COMT) influence emotion recognition abilities. We recruited 88 female undergraduate students and assessed 5-HTT genotype and the COMT Val158Met polymorphism. The subjects completed two computerized tasks: The Penn Emotion Recognition Test (ER40) and the Penn Emotion Acuity Test (PEAT). For the ER40, we found that s-allele carriers performed significantly worse in the recognition of happy faces, but did better in the recognition of fearful faces, compared with homozygous l-carriers of the 5-HTT gene. Neither 5-HTT nor COMT genotypes influenced the ability to discriminate between different intensities of sadness or happiness on the PEAT. Moreover, there was no significant interaction between the two polymorphisms in their effect on performance on the ER40 or the PEAT.
Department of General Psychiatry, Innsbruck Medical University, Innsbruck, Austria.
Michaela
M
Defrancesco
Harald
H
Niederstätter
Walther
W
Parson
Herbert
H
Oberacher
Hartmann
H
Hinterhuber
Markus
M
Canazei
Judith
J
Bidner
Eberhard A
EA
Deisenhammer
Georg
G
Kemmler
Elisabeth M
EM
Weiss
Josef
J
Marksteiner
D000704:Analysis of Variance; D002394:Catechol O-Methyltransferase / Q000235:genetics*; D004192:Discrimination, Psychological / Q000502:physiology; D004644:Emotions / Q000502:physiology*; D005145:Face; D005260:Female; D005787:Gene Frequency; D005838:Genotype; D006801:Humans; D008715:Methionine / Q000235:genetics*; D009483:Neuropsychological Tests; D011110:Polymorphism, Genetic; D021641:Recognition, Psychology / Q000502:physiology*; D050486:Serotonin Plasma Membrane Transport Proteins / Q000235:genetics*; D014633:Valine / Q000235:genetics*
D050486:Serotonin Plasma Membrane Transport Proteins; D008715:Methionine; D002394:Catechol O-Methyltransferase; D014633:Valine