Journal
NEUROSCIENCE LETTERS
Volume 373, Issue 2, Pages 125-129Publisher
ELSEVIER IRELAND LTD
DOI: 10.1016/j.neulet.2004.09.078
Keywords
partial sciatic nerve ligation; chrormic catgut; synthetic silk; neuropathic pain behavior; suture material
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Many factors affect the development of neuropathic pain behavior in animal models. In this letter. we describe the differences in the development of neuropathic pain behavior observed when the partial sciatic nerve ligation (PNL) is performed with either a synthetic silk or chromic catgut ligation. To characterize nociceptive changes over time after surgery neutral plate, hot plate. Von Frey pinprick acetone spray and cold plate testing was performed. The results indicated that a chromic catgut ligature caused cold allodynia, chemical hyperreactivity, mechanical hyperalgesia and hypersensitivity that remained present for the entire 56 days post-surgical observation period. With the synthetic silk ligature, comparable functional deficits were present in the initial phase after surgery, but several of these deficits diminisihed over Lime 21-28 days post-surgery. In conclusion. performing the PNL using chromic catgut suture thread gives rise to more robust sensory deficits than when synthetic silk is used. Therefore, the material that is used for the ligature in the partial sciatic ligation model has an effect on the outcome of the observed sensory abnormalities. (C) 2004 Elsevier Ireland Ltd. All rights reserved.
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