alexa Inhibition of Fas-mediated apoptosis through administration of soluble Fas receptor improves functional outcome and reduces posttraumatic axonal degeneration after acute spinal cord injury.
Neurology

Neurology

International Journal of Neurorehabilitation

Author(s): Ackery A, Robins S, Fehlings MG

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Abstract Fas receptor activation has been implicated in inflammatory responses, programmed cell death, Wallerian degeneration in neural injury and the axotomy induced death of motoneurons. Recent work using transection models of spinal cord injury (SCI) demonstrated that neutralization of Fas ligand with antibodies may promote axonal regeneration and functional recovery. Moreover, recent studies from our laboratory in mutant mice with deficient expression of Fas, show reduced cell death and enhanced behavioural recovery after SCI. The present paper examines the effects of soluble Fas receptor (sFasR) administration on inhibition of Fas receptor-Fas ligand interaction in the setting of acute SCI in vitro and in vivo. An in vitro model of SCI demonstrated that sFasR administration decreases cell death as assessed by propidium iodide fluorescence. Furthermore, in a moderately severe in vivo clip compression model of SCI at C7-T1, we demonstrate that subarachnoid infusion of sFasR results in increased neuron and oligodendrocyte survival, improved tissue and long tract axonal preservation, reduced apoptotic cell death and enhanced functional neurological outcome after acute SCI. These results strongly suggest that inhibiting Fas receptor activation is neuroprotective after acute SCI and that this strategy may have important translational significance. This article was published in J Neurotrauma and referenced in International Journal of Neurorehabilitation

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