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Science 20 July 1979:
Vol. 205. no. 4403, pp. 319 - 321
DOI: 10.1126/science.36665
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Articles

Science, Vol 205, Issue 4403, 319-321
Copyright © 1979 by American Association for the Advancement of Science

articles

Food deprivation increases oral and intravenous drug intake in rats

ME Carroll, CP France, and RA Meisch

Rats given continuous access to etonitazene hydrochloride in their drinking water (5 micrograms per milliliter) more than doubled their drug intake while deprived of food. Another group of rats with implanted jugular catheters self-administered etonitazene (10 micrograms per kilogram) intravenously on a continuous reinforcement schedule, and the number of infusions increased significantly on days when they were deprived of food. These results suggest that feeding condition may be a powerful determinant of drug-reinforced behavior.


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