Influence of intake of sweet solutions on the analgesic effect of a low dose of morphine in randomly bred rats

Felix Bergmann*, Israel Lieblich, Edna Cohen, Judith R. Ganchrow

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

56 Scopus citations

Abstract

The time course for the development of morphine tolerance, following prolonged sweet intake, was examined in randomly bred Sabra rats. Exposure to 3% glucose in 6 mM saccharin solution increased drinking by about three times as compared to rats supplied only with water. Suppression of the analgesic effect of morphine was already detectable after 24 h of intake and became progressively more marked within the next 5 weeks. These results support an active interaction between sweet consumption and endogenous opioids in randomly bred rats.

Original languageEnglish
Pages (from-to)347-353
Number of pages7
JournalBehavioral and Neural Biology
Volume44
Issue number3
DOIs
StatePublished - Nov 1985

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