Abstract
Effects of acute and chronic caffeine intake on the level and pattern of morphine self-administration behavior in WAG/G and Fisher-344 rats were studied. Both acute and chronic caffeine intake decreased morphine self-administration only in WAG/G rats, which attested to increased sensitivity of these rats to reinforcing effects of morphine. Possible relationship between the observed changes and increased anxiety in rats receiving caffeine is discussed.
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Sudakov, S.K., Papazov, I.P., Lyupina, Y.V. et al. Effects of Acute and Chronic Caffeine Intake on Intravenous Self-Administration of Morphine in Two Rat Strains. Bulletin of Experimental Biology and Medicine 134, 400–402 (2002). https://doi.org/10.1023/A:1021980919850
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DOI: https://doi.org/10.1023/A:1021980919850