Pathologic effect of phencylidine and restraint on rat skeletal muscle structure: Prevention by prior denervation

Ralph W. Kuncl*, Herbert Y. Meltzer

*Corresponding author for this work

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Extensive disruptions of myofibrillar architecture or extensive areas of Z-band smearing occur in less than 2% of skeletal muscle fibers of the vastus lateralis muscle of untreated male Sprague-Dawley rats. Restraint for 2 hr, a potent stress in the rat, did not significantly increase the occurrence of extensive myofibrillar disruption, and acute or chronic administration of the potent psychotomimetic-anesthetic, phencyclidine, had only a slight effect on rat skeletal muscle morphology. However, phencyclidine plus restraint resulted in the occurrence of extensive areas of myofibrillar disruption and extensive Z-band smearing as well as scattered, segmental necrosis. Denervation of quadriceps femoris 40-48 hr prior to phencyclidine and restraint almost completely blocked the occurrence of any lesions. This suggests that intense muscle activity, with increased demand for and utilization of oxygen, can produce extensive architectural changes in skeletal muscle.

Original languageEnglish (US)
Pages (from-to)387-402
Number of pages16
JournalExperimental Neurology
Volume45
Issue number2
DOIs
StatePublished - Nov 1974

Fingerprint

Phencyclidine
Denervation
Skeletal Muscle
Quadriceps Muscle
Muscles
Skeletal Muscle Fibers
Sprague Dawley Rats
Anesthetics
Necrosis
Oxygen

ASJC Scopus subject areas

  • Neurology
  • Developmental Neuroscience

Cite this

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abstract = "Extensive disruptions of myofibrillar architecture or extensive areas of Z-band smearing occur in less than 2{\%} of skeletal muscle fibers of the vastus lateralis muscle of untreated male Sprague-Dawley rats. Restraint for 2 hr, a potent stress in the rat, did not significantly increase the occurrence of extensive myofibrillar disruption, and acute or chronic administration of the potent psychotomimetic-anesthetic, phencyclidine, had only a slight effect on rat skeletal muscle morphology. However, phencyclidine plus restraint resulted in the occurrence of extensive areas of myofibrillar disruption and extensive Z-band smearing as well as scattered, segmental necrosis. Denervation of quadriceps femoris 40-48 hr prior to phencyclidine and restraint almost completely blocked the occurrence of any lesions. This suggests that intense muscle activity, with increased demand for and utilization of oxygen, can produce extensive architectural changes in skeletal muscle.",
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Pathologic effect of phencylidine and restraint on rat skeletal muscle structure : Prevention by prior denervation. / Kuncl, Ralph W.; Meltzer, Herbert Y.

In: Experimental Neurology, Vol. 45, No. 2, 11.1974, p. 387-402.

Research output: Contribution to journalArticle

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