Cited by 49Neurotransmitter Receptor Influence on BehaviorParkinson's Disease Mechanisms and TreatmentsNeuroscience and Neuropharmacology Research

Tyrosine: Effects on catecholamine release

Acworth, Ian N., During, Matthew J., Wurtman, Richard J.·1988·Brain Research Bulletin

Abstract

Tyrosine administration elevates striatal levels of dopamine metabolites in animals given treatments that accelerate nigrostriatal firing, but not in untreated rats. We examined the possibility that the amino acid might actually enhance dopamine release in untreated animals, but that the technique of measuring striatal dopamine metabolism was too insensitive to demonstrate such an effect. Dopamine release was assessed directly, using brain microdialysis of striatal extracellular fluid. Tyrosine administration (50-200 mg/kg IP) did indeed cause a dose related increase in extracellular fluid dopamine levels with minor elevations in levels of DOPAC and HVA, its major metabolites, which were not dose-related. The rise in dopamine was short-lived, suggesting that receptor-mediated feedback mechanisms responded to the increased dopamine release by diminishing neuronal firing or sensitivity to tyrosine. These observations indicate that measurement of changes in striatal DOPAC and HVA, if negative, need not rule out increases in nigrostriatal dopamine release.

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Crossref · 10.1016/0361-9230(88)90161-x

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28 of 28 references verified0 citation errors · 0 not checkable

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  • Supplementation of TYR, or TYR-containing diets, increases plasma TYR and enhances brain DA and NE release.

    “The supplementation of TYR, or TYR-containing diets, increase plasma TYR and enhance brain DA and NE release (Lehnert et al., 1984; Reinstein et al., 1984; Acworth et al., 1988; During et al., 1988; see Deijen, 2005, for a comprehensive review).”

    From Working Memory Reloaded: Tyrosine Repletes Updating in the N-Back Task (2013) · cites this paper as Acworth et al., 1988

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Authors
Acworth, I. N., During, M. J., & Wurtman, R. J.
Affiliations
Massachusetts Institute of Technology (US)
Venue
Brain Research Bulletin
Publisher
Elsevier BV
Published
1988-09
Volume
21
Issue
3
Pages
473-477
ISSN
0361-9230 (ISSN-L)
OpenAlex
W2101137162
Cited by
49
References
28
Citations by year
2020: 1 · 2018: 1 · 2017: 4 · 2016: 1 · 2015: 2 · 2014: 3 · 2013: 3
FWCI
0.69
Type
journal article
Language
en
Open access
closed
Locations
  • Brain Research Bulletin (publishedVersion)
  • PubMed (publishedVersion)
Funders
Air Force Office of Scientific Research
Topics
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurotransmitter Receptor Influence on Behavior
  • Health Sciences › Medicine › Neurology › Parkinson's Disease Mechanisms and Treatments
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
tyrosine, dopamine release, striatum, nigrostriatal pathway, catecholamine release, DOPAC, homovanillic acid, dopamine metabolites, cerebral microdialysis, dose-response relationship
MeSH terms
Animals, Corpus Striatum, Dopamine, Dose-Response Relationship, Drug, Homovanillic Acid, Injections, Intraperitoneal, Male, Rats, Inbred Strains, Time Factors, Tyrosine, 3,4-Dihydroxyphenylacetic Acid, Rats

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