Journal
NEUROPHARMACOLOGY
Volume 55, Issue 5, Pages 724-728Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.neuropharm.2008.06.007
Keywords
Rat; Antinociceptive; Lidocaine; Morphine; Pregabalin
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A single infusion of oxaliplatin, a drug active against colorectal cancer, induces specific painful syndrome characterized by neurosensitive symptoms triggered or aggravated in cold conditions. In an animal model that reproduces such hypersensitivity to cold for five days after a single oxaliplatin administration (6 mg/kg, i.p.), we assessed the antinociceptive efficacy of intravenously administered drugs such as morphine, lidocaine and pregabalin using the rat tail immersion test in cold water (10 C). The antinociceptive efficacy was first ranked by ratio of the pharmacological effect (versus time) to dose: pregabalin (2 mg/kg) > lidocaine (3 mg/kg) > morphine (4 mg/kg). Our results show that pregabalin may be a good choice to treat cold hypersensitivity after one oxaliplatin injection. (c) 2008 Elsevier Ltd. All rights reserved
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