Models of Neuropathic Pain in the Rat

Gary J. Bennett1, Jin Mo Chung2, Marie Honore3, Ze'ev Seltzer4

1 McGill University, Montreal, Quebec, 2 Marine Biomedical Institute, Galveston, Texas, 3 Abbott Laborotories, Abbott Park, Illinois, 4 University of Toronto, Toronto, Ontario
Publication Name:  Current Protocols in Neuroscience
Unit Number:  Unit 9.14
DOI:  10.1002/0471142301.ns0914s22
Online Posting Date:  May, 2003
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Abstract

There are now three models of neuropathic pain in the rat that are in widespread use: the chronic constriction injury, the partial sciatic ligation model, and the spinal nerve ligation model. The procedures to create these models and the behavioral assays used to quantify the resulting abnormal pain sensations are described in this unit.

     
 
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Table of Contents

  • Basic Protocol 1: The Chronic Constriction Injury (CCI) Model of Neuropathic Pain
  • Basic Protocol 2: The Partial Sciatic (PSL) Model of Neuropathic Pain
  • Basic Protocol 3: The Spinal Nerve Ligation (SNL) Model of Neuropathic Pain
  • Support Protocol 1: Behavioral Assays: Heat‐Hyperalgesia
  • Support Protocol 2: Behavior Assays: Mechano‐Hyperalgesia
  • Support Protocol 3: Behavioral Assays: Mechano‐Allodynia
  • Support Protocol 4: Behavioral Assays: Cold Allodynia
  • Commentary
  • Literature Cited
  • Figures
  • Tables
     
 
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Materials

Basic Protocol 1: The Chronic Constriction Injury (CCI) Model of Neuropathic Pain

  Materials
  • Saline, sterile
  • Adult male rats (e.g., Sprague‐Dawley; see Critical Parameters for animal considerations)
  • Anesthetic (e.g., sodium pentobarbital; see Critical Parameters for anesthesia considerations)
  • Topical disinfectant (e.g., Betadine)
  • Rat chow (e.g., phytoestrogen‐free rat chow, see Critical Parameters for diet considerations)
  • 4‐0 chromic gut suture
  • Animal clippers
  • Animal heating pad
  • ∼4‐cm diameter rod (e.g., rolled‐up paper toweling or gauze)
  • Scalpel
  • Rat‐toothed forceps
  • Blunt‐tipped scissors
  • Dissecting microscope
  • No. 5 jeweler's forceps
  • Microscissors
  • Blunt‐tipped curved forceps
  • Sutures to close surgical incision
  • Cages with solid floors and soft bedding (e.g., sawdust as opposed to corn cobs or coarse wood chips)

Basic Protocol 2: The Partial Sciatic (PSL) Model of Neuropathic Pain

  • Ophthalmic needle with attached suture (3/8) curved, reversed‐cutting mini‐needle attached to 8‐0 silicone‐treated silk)

Basic Protocol 3: The Spinal Nerve Ligation (SNL) Model of Neuropathic Pain

  • Small rongeur (e.g., 2 mm jaw‐width)
  • 6‐0 silk suture
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Figures

Videos

Literature Cited

Literature Cited
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