AJCN North Carolina Research Campus
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

This Article
Right arrow Full Text (PDF)
Right arrow Purchase Article
Right arrow View Shopping Cart
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Benedict, C. R.
Right arrow Articles by Sole, M. J.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Benedict, C. R.
Right arrow Articles by Sole, M. J.
Agricola
Right arrow Articles by Benedict, C. R.
Right arrow Articles by Sole, M. J.

American Journal of Clinical Nutrition, Vol 38, 429-435, Copyright © 1983 by The American Society for Clinical Nutrition, Inc

ORIGINAL RESEARCH COMMUNICATIONS

The influence of oral tyrosine and tryptophan feeding on plasma catecholamines in man

CR Benedict, GH Anderson and MJ Sole

We investigated the effects of oral tyrosine (7.5 g/day) and oral tryptophan (3 g/day) feeding with regular meals in normal male volunteers using a double-blind cross-over design with a "run in" period for acclimatization. Oral tyrosine feeding significantly decreased both free and conjugated plasma norepinephrine concentrations while oral tryptophan feeding did not have such an effect. Since alpha adrenergic stimulation in certain areas of the CNS has been shown to decrease peripheral sympathetic tone, we postulate that dietary tyrosine supplementation in man causes an increase in brain catecholaminergic activity which in turn leads to a decrease in peripheral sympathetic activity as evidenced by the decrease in plasma catecholamines.


This article has been cited by other articles:


Home page
 J. Nutr.Home page
P. J. Garlick
The Nature of Human Hazards Associated with Excessive Intake of Amino Acids
J. Nutr., June 1, 2004; 134(6): 1633S - 1639S.
[Abstract] [Full Text] [PDF]

Home page
 Am. J. Respir. Crit. Care Med.Home page
Y. Adir, Z. S. Azzam, E. Lecuona, S. Leal, L. Pesce, V. Dumasius, A. M. Bertorello, P. Factor, J. B. Young, K. M. Ridge, et al.
Augmentation of Endogenous Dopamine Production Increases Lung Liquid Clearance
Am. J. Respir. Crit. Care Med., March 15, 2004; 169(6): 757 - 763.
[Abstract] [Full Text] [PDF]

Home page
 J PsychopharmacolHome page
C. Matrenza, J.-M. Hughes, A. H. Kemp, K. A. Wesnes, B. J. Harrison, and P. J. Nathan
Simultaneous Depletion of Serotonin and Catecholamines Impairs Sustained Attention in Healthy Female Subjects without Affecting Learning and Memory
J Psychopharmacol, March 1, 2004; 18(1): 21 - 31.
[Abstract] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1983 by The American Society for Nutrition