| Autor: |
Korah HE; Department of Pharmacology, College of Medicine, The University of Arizona, Tucson., Cheng K; Department of Pharmacology, College of Medicine, The University of Arizona, Tucson., Washington SM; Department of Anesthesiology, College of Medicine, The University of Arizona, Tucson., Flowers ME; Department of Pharmacology, College of Medicine, The University of Arizona, Tucson., Stratton HJ; Department of Pharmacology, College of Medicine, The University of Arizona, Tucson., Patwardhan A; Department of Anesthesiology and Pain Management, University of Texas Southwestern Medical Center., Ibrahim MM; Department of Pharmacology, College of Medicine, The University of Arizona, Tucson; Department of Anesthesiology, College of Medicine, The University of Arizona, Tucson; Neuroscience Graduate Interdisciplinary Program, College of Medicine, The University of Arizona, Tucson; Comprehensive Pain and Addiction Center, The University of Arizona, Tucson., Martin LF; Department of Pharmacology, College of Medicine, The University of Arizona, Tucson; Department of Anesthesiology, College of Medicine, The University of Arizona, Tucson; laurentmartin@arizona.edu. |
| Abstrakt: |
Management of chronic pain remains challenging to this day, and current treatments are associated with adverse effects, including tolerance and addiction. Chronic neuropathic pain results from lesions or diseases in the somatosensory system. To investigate potential therapies with reduced side effects, animal pain models are the gold standard in preclinical studies. Therefore, well-characterized and well-described models are crucial for the development and validation of innovative therapies. Partial ligation of the sciatic nerve (pSNL) is a procedure that induces chronic neuropathic pain in mice, characterized by mechanical and thermal hypersensitivity, ongoing pain, and changes in limb temperature, making this model a great fit to study neuropathic pain preclinically. pSNL is an advantageous model to study neuropathic pain as it reproduces many symptoms observed in humans with neuropathic pain. Furthermore, the surgical procedure is relatively fast and straightforward to perform. Unilateral pSNL of one limb allows for comparison between the ipsilateral and contralateral paws, as well as evaluation of central sensitization. To induce chronic neuropathic hypersensitivity, a 9-0 non-absorbable nylon thread is used to ligate the dorsal third of the sciatic nerve. This article describes the surgical procedure and characterizes the development of chronic neuropathic pain through multiple commonly used behavioral tests. As a plethora of innovative therapies are now being investigated to treat chronic pain, this article provides crucial concepts for standardization and an accurate description of surgeries required to induce neuropathic pain. |
