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The Therapeutic Effectiveness of Full Spectrum Hemp Oil Using a Chronic Neuropathic Pain Model

1
Department of Psychology, University of New Mexico, Albuquerque, NM 87131, USA
2
Department of Anesthesiology, University of New Mexico Health Sciences Center, Albuquerque, NM 87131, USA
3
Organic-Energetic Solutions, Albuquerque, NM 87108, USA
*
Author to whom correspondence should be addressed.
Life 2020, 10(5), 69; https://doi.org/10.3390/life10050069
Received: 19 April 2020 / Revised: 9 May 2020 / Accepted: 14 May 2020 / Published: 18 May 2020
(This article belongs to the Section Medical Research)
Background: Few models exist that can control for placebo and expectancy effects commonly observed in clinical trials measuring ‘Cannabis’ pharmacodynamics. We used the Foramen Rotundum Inflammatory Constriction Trigeminal Infraorbital Nerve injury (FRICT-ION) model to measure the effect of “full-spectrum” whole plant extracted hemp oil on chronic neuropathic pain sensitivity in mice. Methods: Male BALBc mice were submitted to the FRICT-ION chronic neuropathic pain model with oral insertion through an incision in the buccal/cheek crease of 3 mm of chromic gut suture (4-0). The suture, wedged along the V2 trigeminal nerve branch, creates a continuous irritation that develops into secondary mechanical hypersensitivity on the snout. Von Frey filament stimuli on the mouse whisker pad was used to assess the mechanical pain threshold from 0–6 h following dosing among animals (n = 6) exposed to 5 μL of whole plant extracted hemp oil combined with a peanut butter vehicle (0.138 mg/kg), the vehicle alone (n = 3) 7 weeks post-surgery, or a naïve control condition (n = 3). Results: Mechanical allodynia was alleviated within 1 h (d = 2.50, p < 0.001) with a peak reversal effect at 4 h (d = 7.21, p < 0.001) and remained significant throughout the 6 h observation window. There was no threshold change on contralateral whisker pad after hemp oil administration, demonstrating the localization of anesthetic response to affected areas. Conclusion: Future research should focus on how whole plant extracted hemp oil affects multi-sensory and cognitive-attentional systems that process pain. View Full-Text
Keywords: endocannabinoids; cannabidiol; pain; allodynia; Cannabis; hemp endocannabinoids; cannabidiol; pain; allodynia; Cannabis; hemp
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Vigil, J.M.; Montera, M.A.; Pentkowski, N.S.; Diviant, J.P.; Orozco, J.; Ortiz, A.L.; Rael, L.J.; Westlund, K.N. The Therapeutic Effectiveness of Full Spectrum Hemp Oil Using a Chronic Neuropathic Pain Model. Life 2020, 10, 69.

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