Autotomy and central nervous system neuropeptides after section of the sciatic nerve in rats of different strains

Alberto E. Panerai, Paola Sacerdote, Anna Brini, Mauro Bianchi, Paolo Mantegazza

Research output: Contribution to journalArticlepeer-review

Abstract

Autotomy and the concentrations of beta-endorphin and Met-enkephalin in brain areas and the spinal cord were measured in Sprague Dawley, Wistar and Wistar Lewis rats thirty-five days after the section of one sciatic nerve. As expected, autotomy developed in Sprague Dawley and Wistar, but not in Wistar Lewis rats. In the Wistar Lewis, brain and spinal cord concentrations of Met-enkephalin increased, beta-endorphin concentrations were unchanged. In Wistar and Sprague Dawley rats the increase of Met-enkephalin was accompanied by a decrease of beta-endorphin. Administration of chlomipramine, a drug usually employed in the treatment of deafferentation pain, normalized the concentrations of beta-endorphin in the Sprague Dawley and Wistar rats, and avoided the development of autotomy, while Met-enkephalin concentrations did never change. The data presented suggest a possible correlation between beta-endorphin and autotomy.

Original languageEnglish
Pages (from-to)385-388
Number of pages4
JournalPharmacology, Biochemistry and Behavior
Volume28
Issue number3
DOIs
Publication statusPublished - 1987

Keywords

  • Autotomy
  • Beta-endorphin
  • Chlomipramine
  • Deafferentation
  • Met-enkephalin

ASJC Scopus subject areas

  • Biochemistry
  • Behavioral Neuroscience
  • Pharmacology

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