Gabapentin reverses the allodynia produced by the administration of anti-GD2 ganglioside, an immunotherapeutic drug

Anesthesia and Analgesia
S Gillin, L S Sorkin

Abstract

Systemically administered, the anti-GD2 antibody produces allodynia demonstrated by decreased mechanical withdrawal threshold. Electrophysiologic recordings indicate a probable neuropathic origin, as small-diameter sensory fibers develop continuous high-frequency discharge after antibody administration. Gabapentin (GBP) is a gamma-aminobutyric acid analog originally synthesized for its anticonvulsant actions. Several open-label clinical studies, as well as a wealth of anecdotal evidence, suggest that GBP may be beneficial for the treatment of neuropathic pain. This study examined the effects of GBP given as a posttreatment after induction of an anti-GD2-associated allodynia. Anti-GD2 (1 mg/kg intravenously [i.v.]) administered to Sprague-Dawley rats reduced the mean withdrawal threshold from 14.71 to 4.95 g (P < 0.001), as measured by using von Frey hairs. This was reversed by GBP in a dose-dependent fashion; the minimal effective dose was between 3 and 30 mg/kg i.v. The maximal percent analgesic effect of GBP was 76% and 93% at doses of 30 and 100 mg/kg, respectively (P < 0.001). With these doses, side effects were minimal and were manifested as slightly decreased spontaneous movement and startle response. No changes were seen...Continue Reading

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Citations

Apr 3, 1999·Medicinal Research Reviews·J S Bryans, D J Wustrow
Jan 28, 2004·European Journal of Pharmacology·Teresa Mixcoatl-ZecuatlVinicio Granados-Soto
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