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The Use of Acute Tryptophan Depletion in Children and Adolescents

机译:儿童和青少年急性色氨酸耗竭的使用

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The neurotransmitter serotonin (5-HT) plays an important role in many neuropsychiatric disorders, in particular affective disorders, eating disorders and disorders related to problems in processing emotions. Different methods have been applied in previous studies on adults to investigate central nervous serotonergic neurotransmission. Acute tryptophan depletion (ATD) is a neurodietary method to reduce central nervous serotonin synthesis in humans for a short period by decreasing the availability of the amino acid tryptophan, TRP, the physiological precursor to 5-HT. Uptake of endogenous TRP into the central nervous system is decreased by a reduced transport of TRP over the blood–brain barrier as TRP competes with other amino acids administered to the subjects within an amino acid beverage lacking TRP after an overnight fast. According to previous studies, frequent side effects of using ATD in adults are vomiting and nausea, thus limiting its use. Here, we present a modified ATD protocol that was adapted for use in children and adolescents, with the administration of an amino acid beverage adapted to the body weight of the subjects. Underlying principles of this ATD modification termed Moja-De and first research findings based on this ATD formulation will be presented and discussed.
机译:神经递质5-羟色胺(5-HT)在许多神经精神疾病中,尤其是情感障碍,饮食障碍和与情绪处理问题有关的障碍中,起着重要的作用。在以前的成人研究中,已经采用了不同的方法来研究中枢神经血清素神经传递。急性色氨酸耗竭(ATD)是一种神经饮食方法,可通过降低5-HT的生理前体氨基酸色氨酸TRP的可用性,在短期内减少人的中枢神经素5-羟色胺合成。过夜禁食后,由于TRP与缺乏TRP的氨基酸饮料中的受试者服用的其他氨基酸竞争,因此TRP在血脑屏障上的转运减少,从而减少了内源性TRP向中枢神经系统的吸收。根据以前的研究,在成年人中使用ATD的常见副作用是呕吐和恶心,因此限制了它的使用。在这里,我们介绍了一种经过修改的ATD方案,该方案适用于儿童和青少年,并根据受试者的体重给予氨基酸饮料。将介绍和讨论此ATD修改的基本原理,称为Moja-De,并基于此ATD公式得出第一个研究发现。

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