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Am J Physiol Regul Integr Comp Physiol 261: R162-R165, 1991;
0363-6119/91 $5.00
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AJP - Regulatory, Integrative and Comparative Physiology, Vol 261, Issue 1 162-R165, Copyright © 1991 by American Physiological Society

ARTICLES

Hepatic portal infusion of glucagon antibodies increases spontaneous meal size in rats

J. Le Sauter, U. Noh and N. Geary
Department of Psychology, Columbia University, New York, New York 10027.

Specific antibodies to pancreatic glucagon in a dose sufficient to neutralize 1.5 ng glucagon in vitro were intraportally infused during the first 2 min of spontaneous meals in ad libitum-fed male Sprague-Dawley rats. In separate tests, glucagon antibodies stimulated feeding during the first spontaneous meal of the dark phase (73% mean increase in meal size) and during spontaneous meals in the last quarter of the dark phase (58% increase). These results indicate that a glucagon-sensitive satiety mechanism has a physiological role in the control of nocturnal feeding in rats.


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