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Abnormal spontaneous potentials in distal muscles in animal models of spinal cord injury
Journal article   Peer reviewed

Abnormal spontaneous potentials in distal muscles in animal models of spinal cord injury

Anthony S Burns, Michel A Lemay and Alan Tessler
Muscle & nerve, v 31(1)
Jan 2005
PMID: 15508125

Abstract

Action Potentials Animals Cats Disease Models, Animal Female Muscle Contraction Muscle Denervation Muscle, Skeletal - physiopathology Rats Rats, Sprague-Dawley Spinal Cord Injuries - physiopathology Electromyography
Spontaneous potentials in skeletal muscle distal to human spinal cord injury (SCI) have been reported in the literature. Two animal models of SCI were studied for the presence of similar potentials. Six rats and two cats with surgical transections of the thoracic spinal cord were followed for 4-6 weeks with serial electromyography. As a control for the effects of anesthesia and serial testing, three intact rats were anesthetized and tested weekly for 4 weeks. In rats with spinal cord transection, spontaneous potentials emerged 4-7 days after surgery and persisted for the duration of the study (28-32 days). Spontaneous potentials were absent in controls at all timepoints. In cats, spontaneous potentials were observed 8 days postinjury and gradually diminished, starting at 2 weeks. Spontaneous potentials therefore occur after SCI in animals as well as in humans. The utilization of animal models will facilitate the understanding of alterations that occur distal to spinal cord lesions and affect the function of lower motor neurons, leading to peripheral denervation after SCI.

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Collaboration types
Domestic collaboration
Web of Science research areas
Clinical Neurology
Neurosciences
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