Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/66090
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Type: Journal article
Title: Emotion specific modulation of automatic amygdala responses by 5-HTTLPR genotype
Author: Dannlowski, U.
Konrad, C.
Kugel, H.
Zwitserlood, P.
Domschke, K.
Schoning, S.
Ohrmann, P.
Bauer, J.
Pyka, M.
Hohoff, C.
Zhang, W.
Baune, B.
Heindel, W.
Arolt, V.
Suslow, T.
Citation: Neuroimage, 2010; 53(5):893-898
Publisher: Academic Press Inc Elsevier Science
Issue Date: 2010
ISSN: 1053-8119
1095-9572
Statement of
Responsibility: 
Udo Dannlowski, Carsten Konrad, Harald Kugel, Pienie Zwitserlood, Katharina Domschke, Sonja Schöning, Patricia Ohrmann, Jochen Bauer, Martin Pyka, Christa Hohoff, Weiqi Zhang, Bernhard T. Baune, Walter Heindel, Volker Arolt, Thomas Suslow
Abstract: A functional polymorphism in the serotonin transporter gene (5-HTTLPR) has been reported to modulate amygdala responsiveness to negative environmental cues. However, it remains unclear whether 5-HTTLPR modulates amygdala responses specifically to negative stimuli or rather to emotionally salient stimuli in general. In 44 healthy subjects, amygdala responses to subliminally presented happy and sad facial expressions were assessed by means of fMRI at 3 Tesla. All subjects were genotyped for 5-HTTLPR and the recently discovered 5-HTT rs25531. We observed a robust emotion by genotype group interaction in the right amygdala. Risk allele carriers (S or L(G)) showed similar amygdala responses to happy faces compared to homozygous L(A)L(A) carriers but increased amygdala responses to sad faces. The right amygdala was the only anatomical region across the whole brain demonstrating this interaction at a reasonable threshold. It appears that whereas 5-HTT gene variation modulates automatic amygdala responsiveness to sad faces, no such association was found for happy faces. We conclude that 5-HTTLPR genotype predominantly impacts the central processing predominantly of negative environmental cues but not of emotionally salient stimuli in general.
Keywords: Serotonin; 5-HTTLPR; Amygdala; Genetics; fMRI; Depression
Rights: © 2009 Elsevier Inc. All rights reserved.
RMID: 0020111317
DOI: 10.1016/j.neuroimage.2009.11.073
Appears in Collections:Psychiatry publications

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