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


     

Am J Physiol Regul Integr Comp Physiol 256: R541-R548, 1989;
0363-6119/89 $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 Tempel, D. L.
Right arrow Articles by Leibowitz, S. F.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Tempel, D. L.
Right arrow Articles by Leibowitz, S. F.

AJP - Regulatory, Integrative and Comparative Physiology, Vol 256, Issue 2 541-R548, Copyright © 1989 by American Physiological Society

ARTICLES

Nocturnal patterns of macronutrient intake in freely feeding and food-deprived rats

D. L. Tempel, G. Shor-Posner, D. Dwyer and S. F. Leibowitz
Rockefeller University, New York, New York 10021.

Analyses of rats' feeding behavior at the start and the end of the nocturnal cycle have revealed dramatic alterations in macronutrient intake over time. At dark onset, rats displayed a preference for carbohydrate, with the first meal of the night consisting of approximately 60% of this nutrient. This carbohydrate intake was soon followed by a shift toward protein-predominant meals. Superimposed on this pattern of meal-to-meal shifts in nutrient selection appears to be an additional rhythm in which carbohydrate ingestion was favored at dark onset and protein and fat ingestion were favored during the late dark hours. Differential feeding patterns were also apparent following mild food deprivation. A 2-h period of deprivation at dark onset produced a strong compensatory feeding response, particularly of fat and carbohydrate. This pattern was not observed at the end of the dark, when little compensatory feeding was demonstrated. It is suggested that these feeding patterns may be related to the activity of certain hypothalamic neurotransmitters, e.g., norepinephrine and serotonin, known to be important in modulating temporal feeding patterns and nutrient intake.


This article has been cited by other articles:


Home page
 J. Nutr.Home page
C. E. Huntington, N. F. Shay, E. Grouzmann, L. M. Arseneau, and J. L. Beverly
Zinc Status Affects Neurotransmitter Activity in the Paraventricular Nucleus of Rats
J. Nutr., February 1, 2002; 132(2): 270 - 275.
[Abstract] [Full Text] [PDF]

Home page
 J. Nutr.Home page
K. J. Kennedy, T. M. Rains, and N. F. Shay
Zinc Deficiency Changes Preferred Macronutrient Intake in Subpopulations of Sprague-Dawley Outbred Rats and Reduces Hepatic Pyruvate Kinase Gene Expression
J. Nutr., January 1, 1998; 128(1): 43 - 49.
[Abstract] [Full Text]


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