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Science 30 April 1976:
Vol. 192. no. 4238, pp. 485 - 487
DOI: 10.1126/science.1257784
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Articles

Science, Vol 192, Issue 4238, 485-487
Copyright © 1976 by American Association for the Advancement of Science

articles

Rapid discrimination of rewarding nutrient by the upper gastrointestinal tract

A Puerto, JA Deutsch, F Molina, and PL Roll

When certain nutrients are injected into the stomachs of rats that are drinking one of two samples of nonnutrient, flavored water, the rats will (within a 10-minute session) choose the flavor paired with the nutrient. Such rewarding effects have obtained with predigested milk but not with similarly treated glucose or fresh milk. The results suggest the presence of rapidly acting, specialized, nutrient receptors in the upper gastrointestinal tract.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Learned flavor preferences induced by intragastric administration of rewarding nutrients: role of capsaicin-sensitive vagal afferent fibers.
M. A. Zafra, F. Molina, and A. Puerto (2007)
Am J Physiol Regulatory Integrative Comp Physiol 293, R635-R641
   Abstract »    Full Text »    PDF »
The stomach as a site for rapid nutrient reinforcement sensors.
J. Deutsch and M. Wang (1977)
Science 195, 89-90
   Abstract »    PDF »


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