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[神经内科]1995年.The neuroprotective effect of high-dose methylprednisolone in rat spinal cord hemisection

 

Multiple studies support a neuroprotective effect for high-dose methylprednisolone (MP) in acute blunt spinal cord injury. We know of no study that addresses the role of MP in prophylaxis for surgical trauma to the spinal cord or for the treatment of non-missile penetrating injuries to the spinal cord. We examined the neuroprotective effect of MP as measured by the retrograde transport of the fluorescent tracer Fluoro-Gold in 20 rats undergoing C-2 hemisection. Mean cell counts of retrogradely labeled rubrospinal neurons were determined 1 week post-injury. The group receiving MP had a significantly higher (P < 0.0001) number of labeled cells (x = 594) compared to controls (x = 387). The highly significant increase in mean cell counts in rats receiving steroids suggests less secondary axonal injury in the MP group. These findings are the first report of a neuroprotective effect of MP in rat spinal cord hemisection. We suggest that MP may be beneficial as prophylaxis during planned or incidental surgical trauma to the spinal cord and after non-missile penetrating injuries to the spinal cord.

 

 

 

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