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Clinical Trial Summary

The study aims to explore whether acute tryptophan depletion can affect the emotion and interference processing whether this effect is moderated by the TPH2 genotype


Clinical Trial Description

Based on previous studies suggesting that serotonin, a neurotransmitter, is associated with social & emotional behavior, including emotional reactivity and emotion regulation, the present study aims to explore effects of acute tryptophan depletion (ATD) on emotion processing and emotional interference processing within a randomized double-blind, with-subject, placebo-controlled pharmaco-fMRI experiment. To further examine the potential moderating effects of the genetic makeup of the serotonin system the present study will include a pharmacogenetics imaging approach. Given that TPH2 is the key regulator of the serotonergic signaling pathway, we therefore assessed whether such the effects of tryptophan depletion vary according to the TPH2 genotype. To this end, healthy male TPH2-GG or TPH2-TT carriers will be recruited and will receive ATD (100g) and placebo (102.3g) in a within subject design. To control for potential effects of pre-medication personality traits as well as effects of medicines on mood, subjects will be administered pre-treatment assessing relevant personality traits and post-treatment assessments of mood. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT03549182
Study type Interventional
Source University of Electronic Science and Technology of China
Contact Benjamin Becker, Dr.
Phone 86-28-61830988
Email ben_becker@gmx.de
Status Recruiting
Phase N/A
Start date March 1, 2017
Completion date July 1, 2019

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