help button home button Endocrine Society JCEM JCEM Call for Nominations for EIC
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
This Article
Right arrow Submit a related Letter to the Editor
Right arrow Alert me when this article is cited
Right arrow Alert me when eLetters are posted
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
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 Request Copyright Permission
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Davidson, L.
Right arrow Articles by Arkwright, P. D.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Davidson, L.
Right arrow Articles by Arkwright, P. D.

Journal of Clinical Endocrinology & Metabolism, Vol 58, 415-418, Copyright © 1984 by Endocrine Society

ARTICLES

Free and sulfate-conjugated catecholamines during exercise in man

L Davidson, R Vandongen, LJ Beilin and PD Arkwright

The study examined the plasma concentration of free and sulfate- conjugated norepinephrine (NE) and epinephrine (E) at rest and after vigorous bicycle exercise. Free and total catecholamines were measured by a modified radioenzymatic assay using external standards. This assay was less costly and, in subjects with normal renal function, plasma levels were highly comparable to those obtained using internal standards. Exercise was associated with a predictable rise in plasma free NE and E concentration, which correlated with the hemodynamic changes, and a significant decrease in the levels of catecholamine sulfate conjugates. There was an inverse relationship between the degree of conjugation and the free levels of NE and E both at rest and after exercise. This suggests that the degree of conjugation is another factor determining the concentration of free amines in plasma.




HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Endocrinology Endocrine Reviews J. Clin. End. & Metab.
Molecular Endocrinology Recent Prog. Horm. Res. All Endocrine Journals
Copyright © 1984 by The Endocrine Society