Journal
NEUROSCIENCE LETTERS
Volume 280, Issue 3, Pages 211-214Publisher
ELSEVIER SCI IRELAND LTD
DOI: 10.1016/S0304-3940(00)00787-4
Keywords
analgesia; central pain; neuropathic pain
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The effect of systemic gabapentin, a novel antiepileptic and analgesic, was tested on allodynia-like behaviors in spinal cord injured rats. On the first day of treatment 30 mg/kg intraperitoneal gabapentin did not alleviate hyper-reactivity to mechanical and cold stimulation. The allodynia was significantly reduced by 100 mg/kg gabapentin, which however, produced sedation and motor impairments. Repeated administration of 30 mg/kg gabapentin once a day produced a gradually increasing anti-allodynic effect. Total alleviation of mechanical allodynia was observed in most rats after the third administration of gabapentin. Thus, build-up of the antiallodynic effect of gabapentin may develop through a time dependent mechanism or alternatively through a gradual accumulation of the effective central nervous system concentration of the drug. (C) 2000 Elsevier Science Ireland Ltd. All rights reserved.
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