Related Experiment Video
Updated: Jun 11, 2026
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Partial Sciatic Nerve Ligation: A Mouse Model of Chronic Neuropathic Pain to Study the Antinociceptive Effect of Novel Therapies
Published on: October 6, 2022
Targeting Phantom Limb Pain with Cannabinoids in a Rat Model.
Anjalika Eeswara1, Kristin Perrucci1, Stanislava Jergova1
1Department of Neurosurgery, Miami Project to Cure Paralysis, University of Miami School of Medicine, Miami, FL, USA.
Medical Cannabis and Cannabinoids
|June 10, 2026
Summary
Cannabinoids like cannabidiol (CBD), β-caryophyllene (BCP), and THC show promise for phantom limb pain (PLP). Tailored cannabinoid treatments effectively reduced pain, with specific compounds showing benefits at different treatment stages.
Area of Science:
- Neuroscience
- Pharmacology
Background:
- Phantom limb pain (PLP) is a severe neuropathic condition with limited treatment options.
- Cannabinoids (CBD, BCP, THC) possess analgesic and anti-inflammatory properties relevant to neuropathic pain.
Purpose of the Study:
- To evaluate the efficacy of combined cannabinoids (CBD/BCP/THC) as preventive or delayed interventions for PLP in a rodent model.
- To investigate the impact of cannabinoid treatments on pain behaviors, spinal cytokine levels, glial reactivity, and GABAergic signaling.
Main Methods:
- A rodent model of PLP was established using sciatic nerve injury and inflammation.
- Cannabinoid combinations (CBD/BCP/THC, CBD/BCP, THC) or vehicle were administered preemptively or after pain onset.
- Pain behaviors, spinal cytokine profiles, glial activation, and GABAergic signaling were assessed over 72 days.
Main Results:
- Preemptive THC or CBD/BCP significantly reduced PLP onset and severity.
- Delayed treatment with CBD/BCP or CBD/BCP/THC was most effective in mitigating established PLP.
- Pain relief correlated with restored spinal GABAergic inhibition and reduced neuroinflammation (decreased glial reactivity, anti-inflammatory cytokine shift).
Conclusions:
- Cannabinoid interventions show significant therapeutic potential for PLP, effective in both early and delayed treatment paradigms.
- THC may be more effective preemptively, while CBD and BCP show advantages in established pain.
- Optimizing cannabinoid combinations and dosing strategies is crucial for maximizing analgesic effects in neuropathic pain.
