Katrin Helmbold

Aachen, NW 52074, Germany

Last Updated: 09/26/2026

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Found 16 publications

Effects of Dietary Acute Tryptophan Depletion (ATD) on NPY Serum Levels in Healthy Adult Humans Whilst Controlling for Methionine Supply-A Pilot Study.

Effects of Dietary Acute Tryptophan Depletion (ATD) on NPY Serum Levels in Healthy Adult Humans Whilst Controlling for Methionine Supply-A Pilot Study.

Journal: Nutrients

Published: March 30, 2018

No detectable effects of acute tryptophan depletion on short-term immune system cytokine levels in healthy adults.

No detectable effects of acute tryptophan depletion on short-term immune system cytokine levels in healthy adults.

Journal: The world journal of biological psychiatry : the official journal of the World Federation of Societies of Biological Psychiatry

Published: January 23, 2018

Resting state default mode network connectivity in children and adolescents with ADHD after acute tryptophan depletion.

Resting state default mode network connectivity in children and adolescents with ADHD after acute tryptophan depletion.

Journal: Acta psychiatrica Scandinavica

Published: February 25, 2016

Dietary tryptophan depletion in humans using a simplified two amino acid formula - a pilot study.

Dietary tryptophan depletion in humans using a simplified two amino acid formula - a pilot study.

Journal: Food & nutrition research

Published: July 26, 2015

Neural correlates of reactive aggression in children with attention-deficit/hyperactivity disorder and comorbid disruptive behaviour disorders.

Neural correlates of reactive aggression in children with attention-deficit/hyperactivity disorder and comorbid disruptive behaviour disorders.

Journal: Acta psychiatrica Scandinavica

Published: July 09, 2015

Studying the effects of dietary body weight-adjusted acute tryptophan depletion on punishment-related behavioral inhibition.

Studying the effects of dietary body weight-adjusted acute tryptophan depletion on punishment-related behavioral inhibition.

Journal: Food & nutrition research

Published: May 05, 2015

Serotonergic modulation of resting state default mode network connectivity in healthy women.

Serotonergic modulation of resting state default mode network connectivity in healthy women.

Journal: Amino acids

Published: April 02, 2015

Effects of dietary tryptophan and phenylalanine-tyrosine depletion on phasic alertness in healthy adults - A pilot study.

Effects of dietary tryptophan and phenylalanine-tyrosine depletion on phasic alertness in healthy adults - A pilot study.

Journal: Food & nutrition research

Published: October 23, 2014

Amino acid challenge and depletion techniques in human functional neuroimaging studies: an overview.

Amino acid challenge and depletion techniques in human functional neuroimaging studies: an overview.

Journal: Amino acids

Published: September 10, 2014

Effects of a short-term reduction in brain serotonin synthesis on the availability of the soluble leptin receptor in healthy women.

Effects of a short-term reduction in brain serotonin synthesis on the availability of the soluble leptin receptor in healthy women.

Journal: Journal of neural transmission (Vienna, Austria : 1996)

Published: April 03, 2014

Effects of serotonin depletion on punishment processing in the orbitofrontal and anterior cingulate cortices of healthy women.

Effects of serotonin depletion on punishment processing in the orbitofrontal and anterior cingulate cortices of healthy women.

Journal: European neuropsychopharmacology : the journal of the European College of Neuropsychopharmacology

Published: February 12, 2014

Acute tryptophan depletion - converging evidence for decreasing central nervous serotonin synthesis in rodents and humans.

Acute tryptophan depletion - converging evidence for decreasing central nervous serotonin synthesis in rodents and humans.

Journal: Acta psychiatrica Scandinavica

Published: November 19, 2013

Showing 1-12 of 16

Last Updated: 09/26/2026