Daily rhythm in tyrosine concentration in human plasma: persistence on low-protein diets.

Science (New York, N.Y.) ·Vol. 158 ·No. 3801 ·1967-11-03 ·Pages 660-2

Wurtman RJ, Chou C, Rose CM

Abstract

The concentration of tyrosine in the plasma of normal males varies diurnally. It is lowest (9.5 +/- 0.35 micrograms per milliliter) between 0130 and 0230 hours and rises to a peak of 16.2 +/- 0.82 micrograms per milliliter by 1030 hours. This rhythm persists when subjects are maintained for 2 weeks on a diet that is very low in protein.

MeSH Terms

17-Hydroxycorticosteroids/blood Adolescent Adult Circadian Rhythm Dietary Proteins/pharmacology Humans Liver/enzymology Male Physical Exertion Tyrosine/blood Tyrosine Transaminase/metabolism

Chemicals

17-Hydroxycorticosteroids Dietary Proteins Tyrosine Tyrosine Transaminase

Authors & Affiliations

3 authors, click to expand affiliations / ORCID

Wurtman R J

Chou C

Rose C M

Article Info

Journal

Science (New York, N.Y.)

Abbr.

Science

ISSN

0036-8075

DOI

10.1126/science.158.3801.660

Published

1967-11-03

Pages

660-2

Language

English

Region

United States

NLM ID

0404511

Subset

External Links

PubMed source DOI: 10.1126/science.158.3801.660 View journal details

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Daily rhythm in tyrosine concentration in human plasma: persistence on low-protein diets.

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