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- W2000925066 abstract "Introduction Maximal serotonin transporter (5-HTT) densities have been found in the cingulate cortex, a cortical region that has been critically implicated in emotion processing and the pathophysiology of Major Depressive Disorder. Furthermore, serotonin (5-HT) re-uptake inhibition is the first line strategy in the treatment of depression. Objectives Since 5-HTTs are not restricted to neuronal cells, 5-HT uptake velocity (Vmax) can be easily measured on blood platelets subserving as peripheral model of neuronal 5-HTT function and related measures of neural activation. Aims To determine whether peripheral 5-HTT uptake velocity is related to neural activation in the cingulate cortex during emotion processing. Methods 48 healthy subjects underwent an fMRI paradigm comprising emotional (angry/fearful faces and scenes) and neutral stimuli (simple shapes). 5-HT Vmax was determined in platelets. Subjects were genotyped for a common triallelic polymorphism in the promoter region of the 5-HTT gene (5-HTTLPR). Results Significant negative correlations between Vmax and BOLD-signal in the anterior and posterior portion of the cingulate cortex have been found. Cluster maxima within both regions were detected in the subgenual anterior cortex (−1.5, 28.5, −3.5, t = −3.77) and the ventral posterior cingulate cortex (−4.5, −49.5,14.5, t = −3.06). Genotype did not impact on this relationship. Conclusions Our results indicate a clear dependency between a peripheral marker, platelet 5-HT uptake velocity, and neural activity in portions of the cingulate cortex for the first time." @default.
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- W2000925066 date "2011-03-01" @default.
- W2000925066 modified "2023-09-23" @default.
- W2000925066 title "Peripheral serotonin uptake is related to neural activation in the cingulate cortex" @default.
- W2000925066 doi "https://doi.org/10.1016/s0924-9338(11)72390-2" @default.
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