Literature DB >> 3352467

Decrease in plasma tryptophan after tryptophan-free amino acid mixtures in man.

E A Moja1, D M Stoff, G L Gessa, D Castoldi, R Assereto, O Tofanetti.   

Abstract

Male healthy subjects, fasting 12 hours, ingested increasing amounts of a mixture containing a fixed proportion of seven essential amino acids (L-isoleucine 11.5%, L-leucine 18.0%, L-lysine 13.1%, L-methionine 18.0%, L-phenylalanine 18.0%, L-threonine 8.2%, L-valine 13.1%) and lacking tryptophan. The diets produced a rapid fall in plasma tryptophan which was proportional to the total amount of the amino acids ingested. Following the highest dose administered (36.6 g) plasma tryptophan fell to a minimum of about 35% the initial level and remained markedly reduced at 6 hours after treatment. The mechanism of this decrease and its potential clinical relevance are discussed.

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Year:  1988        PMID: 3352467     DOI: 10.1016/0024-3205(88)90013-6

Source DB:  PubMed          Journal:  Life Sci        ISSN: 0024-3205            Impact factor:   5.037


  26 in total

1.  Inverse changes in raphe and cortical 5-HT1B receptor availability after acute tryptophan depletion in healthy human subjects.

Authors:  Stephen R Baldassarri; Eunkyung Park; Sjoerd J Finnema; Beata Planeta; Nabeel Nabulsi; Soheila Najafzadeh; Jim Ropchan; Yiyun Huang; Jonas Hannestad; Kathleen Maloney; Zubin Bhagwagar; Richard E Carson
Journal:  Synapse       Date:  2020-05-07       Impact factor: 2.562

2.  Alteration of frontal EEG asymmetry during tryptophan depletion predicts future depression.

Authors:  John J B Allen; Katherine M McKnight; Francisco A Moreno; Heath A Demaree; Pedro L Delgado
Journal:  J Affect Disord       Date:  2008-09-18       Impact factor: 4.839

3.  Acute tryptophan loading decreases functional connectivity between the default mode network and emotion-related brain regions.

Authors:  Yacila I Deza-Araujo; Philipp T Neukam; Michael Marxen; Dirk K Müller; Thomas Henle; Michael N Smolka
Journal:  Hum Brain Mapp       Date:  2018-12-25       Impact factor: 5.038

4.  Risk-seeking for losses is associated with 5-HTTLPR, but not with transient changes in 5-HT levels.

Authors:  Philipp T Neukam; Nils B Kroemer; Yacila I Deza Araujo; Lydia Hellrung; Shakoor Pooseh; Marcella Rietschel; Stephanie H Witt; Uwe Schwarzenbolz; Thomas Henle; Michael N Smolka
Journal:  Psychopharmacology (Berl)       Date:  2018-05-05       Impact factor: 4.530

5.  Tryptophan depletion reduces right inferior prefrontal activation during response inhibition in fast, event-related fMRI.

Authors:  Katya Rubia; Francis Lee; Anthony J Cleare; Nigel Tunstall; Cynthia H Y Fu; Michael Brammer; Phillip McGuire
Journal:  Psychopharmacology (Berl)       Date:  2005-01-26       Impact factor: 4.530

6.  Biochemical aspects of tryptophan depletion in primates.

Authors:  S N Young; F R Ervin; R O Pihl; P Finn
Journal:  Psychopharmacology (Berl)       Date:  1989       Impact factor: 4.530

7.  Comparison of 50- and 100-g L -tryptophan depletion and loading formulations for altering 5-HT synthesis: pharmacokinetics, side effects, and mood states.

Authors:  Donald M Dougherty; Dawn M Marsh-Richard; Charles W Mathias; Ashley J Hood; Merideth A Addicott; F Gerard Moeller; Christopher J Morgan; Abdulla A-B Badawy
Journal:  Psychopharmacology (Berl)       Date:  2008-05-02       Impact factor: 4.530

8.  Acute dopamine and/or serotonin depletion does not modulate mismatch negativity (MMN) in healthy human participants.

Authors:  Sumie Leung; Rodney J Croft; Valérie Guille; Kirsty Scholes; Barry V O'Neill; K Luan Phan; Pradeep J Nathan
Journal:  Psychopharmacology (Berl)       Date:  2009-12-10       Impact factor: 4.530

Review 9.  Acute tryptophan depletion in humans: a review of theoretical, practical and ethical aspects.

Authors:  Simon N Young
Journal:  J Psychiatry Neurosci       Date:  2013-09       Impact factor: 6.186

10.  Change in electrodermal activity after acute tryptophan depletion associated with aggression in young people with attention deficit hyperactivity disorder (ADHD).

Authors:  G G von Polier; C S Biskup; W F Kötting; S Bubenzer; K Helmbold; A Eisert; T J Gaber; F D Zepf
Journal:  J Neural Transm (Vienna)       Date:  2013-12-01       Impact factor: 3.575

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