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Article Publish Status: FREE
Abstract Title:

Mechanism of injury-provoked poliomyelitis.

Abstract Source:

J Virol. 1998 Jun ;72(6):5056-60. PMID: 9573275

Abstract Author(s):

M Gromeier, E Wimmer

Article Affiliation:

M Gromeier

Abstract:

Skeletal muscle injury is known to predispose its sufferers to neurological complications of concurrent poliovirus infections. This phenomenon, labeled"provocation poliomyelitis,"continues to cause numerous cases of childhood paralysis due to the administration of unnecessary injections to children in areas where poliovirus is endemic. Recently, it has been reported that intramuscular injections may also increase the likelihood of vaccine-associated paralytic poliomyelitis in recipients of live attenuated poliovirus vaccines. We have studied this important risk factor for paralytic polio in an animal system for poliomyelitis and have determined the pathogenic mechanism linking intramuscular injections and provocation poliomyelitis. Skeletal muscle injury induces retrograde axonal transport of poliovirus and thereby facilitates viral invasion of the central nervous system and the progression of spinal cord damage. The pathogenic mechanism of provocation poliomyelitis may differ from that of polio acquired in the absence of predisposing factors.

Study Type : Review

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Sayer Ji
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