Cited by 161Neurotransmitter Receptor Influence on BehaviorTryptophan and brain disordersTreatment of Major Depression

Differential effects of 5-HTTLPR genotypes on the behavioral and neural responses to tryptophan depletion in patients with major depression and controls

Neumeister, Alexander, Hu, Xian-Zhang, Luckenbaugh, David A., Schwarz, Markus, Nugent, Allison C., Bonne, Omer, Herscovitch, Peter, Goldman, David +2 more·2006·Archives of General Psychiatry

Abstract

CONTEXT: Tryptophan depletion (TD) is a model used to study the contribution of reduced serotonin transmission to the pathogenesis of major depressive disorder (MDD). Recent studies have not sufficiently addressed the relative contribution of a functional-length triallelic polymorphism in the promoter of the serotonin transporter, 5-HTTLPR, to the behavioral and neural responses to TD in individuals with remitted MDD (rMDD) and controls. OBJECTIVE: To determine the role of 5-HTTLPR on the behavioral and neural responses to TD in medication-free patients with rMDD and individually matched controls. DESIGN: Participants were stratified according to diagnosis and 5-HTTLPR genotypes and underwent TD on one test day and sham depletion on the other test day in a prospective, double-blind, randomized order. SETTING: Outpatient clinic. PARTICIPANTS: Twenty-seven medication-free patients with rMDD (18 women and 9 men) and 26 controls (17 women and 9 men). INTERVENTIONS: Tryptophan depletion was induced by administration of capsules containing an amino acid mixture without tryptophan. Sham depletion used identical capsules containing lactose. Fludeoxyglucose F 18 positron emission tomography was performed 6 hours after TD. Magnetic resonance images were obtained for each participant. MAIN OUTCOME MEASURES: Quantitative positron emission tomography of regional cerebral metabolic rates for glucose and measures of depression using the Hamilton Depression Rating Scale. RESULTS: Behavioral responses to TD are affected by 5-HTTLPR in patients with rMDD and controls. A direct effect of 5-HTTLPR on the regulation of regional cerebral metabolic rates for glucose was identified in patients with rMDD for the amygdala, hippocampus, and subgenual anterior cingulate cortex. CONCLUSIONS: Variations in 5-HTTLPR modulate the sensitivity of patients with rMDD and controls to the behavioral effects of TD. In patients with rMDD, variations in triallelic 5-HTTLPR have a direct effect on regulation of regional cerebral metabolic rates for glucose in a corticolimbic circuit that has been implicated in rMDD.

Integrity signals

Registry

Crossref · 10.1001/archpsyc.63.9.978

Cites

49 of 49 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • In recovered MDD cases who experience depressive relapse under experimental conditions involving serotonin or catecholamine depletion, the metabolic activity increases in these regions as the depressive symptoms return.

    “Conversely, in recovered MDD cases who experience depressive relapse under experimental conditions involving serotonin or catecholamine depletion, the metabolic activity increases in these regions as the depressive symptoms return (Neumeister et al. 2004; Hasler et al. 2008) although the elevation of left amygdala activity during serotonin depletion-induced relapse was limited to homozygotes for”
  • Left amygdala activation increases during tryptophan depletion-induced relapses into depression only in MDD patients homozygous for the long allele of the serotonin-transporter polymorphism.

    “In addition, activation of the left amygdala increases during relapses into depression induced by tryptophan depletion, but only in MDD patients who are homozygous for the long allele of the serotonin-transporter polymorphism (73).”

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Neumeister, A., Hu, X.-Z., Luckenbaugh, D. A., Schwarz, M., Nugent, A. C., Bonne, O., Herscovitch, P., Goldman, D., Drevets, W. C., & Charney, D. S.
Affiliations
Yale University (US)
Venue
Archives of General Psychiatry
Published
2006-09-01
Volume
63
Issue
9
Pages
978
ISSN
0003-990X (ISSN-L)
OpenAlex
W2075058568
Cited by
161
References
49
Citations by year
2026: 1 · 2025: 2 · 2024: 1 · 2023: 4 · 2022: 2 · 2021: 1 · 2020: 3 · 2019: 3 · 2018: 3 · 2017: 1 · 2016: 6 · 2015: 8 · 2014: 11 · 2013: 10 · 2012: 14
FWCI
7.58
Type
journal article
Language
en
Open access
closed
Locations
  • Archives of General Psychiatry (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Life Sciences › Neuroscience › Biological Psychiatry › Tryptophan and brain disorders
  • Health Sciences › Medicine › Pharmacology › Treatment of Major Depression
Keywords
5-HTTLPR, serotonin transporter, tryptophan depletion, major depressive disorder, remitted depression, genetic polymorphism, regional cerebral glucose metabolism, amygdala, hippocampus, subgenual anterior cingulate cortex, corticolimbic circuits, serotonin transmission, gene-environment interaction
MeSH terms
Adult, Ambulatory Care, Amino Acids, Brain, Major Depressive Disorder, Double-Blind Method, Female, Genotype, Glucose, Humans, Male, Neural Pathways, Placebos, Prospective Studies, Psychiatric Status Rating Scales, Serotonin, Tissue Distribution, Tryptophan, Fluorodeoxyglucose F18, Polymorphism, Single Nucleotide, Positron-Emission Tomography, Serotonin Plasma Membrane Transport Proteins

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review