AJP - Endo Fuel your research with LabChart
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Am J Physiol Endocrinol Metab 270: E608-E613, 1996;
0193-1849/96 $5.00
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
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
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Weibel, L.
Right arrow Articles by Brandenberger, G.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Weibel, L.
Right arrow Articles by Brandenberger, G.

AJP - Endocrinology and Metabolism, Vol 270, Issue 4 E608-E613, Copyright © 1996 by American Physiological Society

ARTICLES

Internal dissociation of the circadian markers of the cortisol rhythm in night workers

L. Weibel, K. Spiegel, M. Follenius, J. Ehrhart and G. Brandenberger
Laboratoire de Physiologie et de Psychologie Environnementales, Centre National de la Recherche Scientifique, Strasbourg, France.

To determine whether the circadian system of night workers is adapted to a night-active schedule, we submitted 11 night workers and 11 day-active subjects to a 10-min blood sampling procedure during their usual sleep-wake cycle, permitting a precise determination of circadian and ultradian cortisol variations. In night works, the usual shift of 8 h in the sleep period was associated with a distortion of the normal 24-h cortisol rhythm. The acrophase exhibited a shift of approximately 6.5 h, whereas the quiescent period, abruptly interrupted by a large peak, underwent a shift of only 3 h and lasted for approximately 5 h, as in day-active subjects. Slow-wave sleep and sleep onset occurred during periods of low or decreasing cortisol secretory rates, whereas awakenings were associated with an increase in cortisol secretory rates. These results revealed that the circadian system of night workers only partially adapts to night work and that adaptation processes rely on an internal dissociation of the markers of the cortisol pattern, without disturbing the processes that couple cortisol release and specific sleep stages.


This article has been cited by other articles:


Home page
 J. Appl. Physiol.Home page
J. Axelsson, T. Akerstedt, G. Kecklund, A. Lindqvist, and R. Attefors
Hormonal changes in satisfied and dissatisfied shift workers across a shift cycle
J Appl Physiol, November 1, 2003; 95(5): 2099 - 2105.
[Abstract] [Full Text] [PDF]

Home page
 CirculationHome page
R. Furlan, F. Barbic, S. Piazza, M. Tinelli, P. Seghizzi, and A. Malliani
Modifications of Cardiac Autonomic Profile Associated With a Shift Schedule of Work
Circulation, October 17, 2000; 102(16): 1912 - 1916.
[Abstract] [Full Text] [PDF]

Home page
 Am. J. Physiol. Endocrinol. Metab.Home page
C. Simon, L. Weibel, and G. Brandenberger
Twenty-four-hour rhythms of plasma glucose and insulin secretion rate in regular night workers
Am J Physiol Endocrinol Metab, March 1, 2000; 278(3): E413 - E420.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Visit Other APS Journals Online