Retention of sarcoplasmic calcium inhibits development of the phencyclidine-restraint experimental myopathy

Jean Ross-Canada, Richard A. Chizzonite, Herbert Y. Meltzer*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

The myopathy induced in the rat by the central nervous system stimulant, phencyclidine (PCP), and restraint is characterized by extensive myofibrillar sarcomere disruption in hind limb muscles and massive increases in plasma creatine kinase (CPK) activity. The effects of dantrolene sodium on this myopathy were studied to determine if modulation of calcium release from the sarcoplasmic reticulum could alter the development of the myopathy. Dantrolene prevented both the sarcomere disruption and the increase in plasma CPK activity produced in the PCP-restraint model. The inhibitory effect was not due to a decrease in the locomotor activity produced by PCP. The findings are consistent with a role for excess sarcoplasmic calcium, originating from the sarcoplasmic reticulum, in the development of this myopathy.

Original languageEnglish (US)
Pages (from-to)1-10
Number of pages10
JournalExperimental Neurology
Volume79
Issue number1
DOIs
StatePublished - Jan 1983

ASJC Scopus subject areas

  • Neurology
  • Developmental Neuroscience

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