Journal
JOURNAL OF NEUROIMMUNOLOGY
Volume 106, Issue 1-2, Pages 130-136Publisher
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DOI: 10.1016/S0165-5728(00)00213-7
Keywords
TNF-alpha; dorsal columns; intra-spinal injection
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There is circumstantial evidence implicating the pro-inflammatory cytokine tumour necrosis factor (TNF) in the pathogenesis of multiple sclerosis (MS), but there is no direct evidence that TNF can produce demyelination in the central nervous system (CNS). We demonstrate here that single injections of TNF into the dorsal columns of adult rats produced a mild inflammatory response indistinguishable from that seen in control cords, but did not induce demyelination. A similar response was seen when TNF-alpha was injected into dorsal columns where central axons had been remyelinated by Schwann cells. In marked contrast, single intraneural injections of TNF into sciatic nerves produced acute changes in the endoneurial microvascular bed that were followed by demyelination and degeneration. (C) 2000 Elsevier Science B.V. All rights reserved.
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