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beta-Endorphin induces nonconvulsive limbic seizures.

Authors
  • S J Henriksen
  • F E Bloom
  • F McCoy
  • N Ling
  • R Guillemin
Publication Date
Oct 01, 1978
Source
PMC
Keywords
Disciplines
  • Chemistry
License
Unknown

Abstract

The endogenous opioid peptide, beta-endorphin, induces nonconvulsive limbic epileptiform activity when administered intraventricularly to rats. Epileptiform activity is elicited by beta-endorphin in doses that are devoid of analgesic or behavioral signs. Equimolar intraventricular doses of morphine or of the enkephalin analog [DAIa2,Met5]enkephalin-NH2 fail to elicit this limbic epileptiform activity. These observations, together with the recent immunohistochemical localization of beta-endorphin to midline limbic structures, suggest that beta-endorphin may have an important role in the regulation of limbic excitability.

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