Opiate induced feeding is not dependent on the hippocampus

Blake A. Gosnell, John E. Morley, Allen S. Levine, Julie Kneip, Mary Frick, Robert P. Elde

Research output: Contribution to journalArticlepeer-review

Abstract

It has been shown that spreading depression of the hippocampus can elicit feeding, and that several opioid peptides elicit spreading depression when injected into the hippocampus. To determine whether such depression is the primary mechanism by which opiates induce feeding, we tested the feeding effects of naloxone, an opiate antagonist, and butorphanol tartrate, a kappa-sigma agonist, on feeding in rats with and without hippocampal lesions. Naloxone tended to reduce intake approximately equally in the two groups. Similarly, the doses of butorphanol that increased intake in sham rats were equally effective in lesioned rats. It was concluded that the hippocampus is not the major structure mediating opiate-induced feeding.

Original languageEnglish (US)
Pages (from-to)27-30
Number of pages4
JournalPhysiology and Behavior
Volume33
Issue number1
DOIs
StatePublished - Jan 1 1984

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