Erin M Rock1, Cheryl L Limebeer1, Linda A Parker2. 1. Department of Psychology and Collaborative Neuroscience Program, University of Guelph, Guelph, ON, N1G2W1, Canada. 2. Department of Psychology and Collaborative Neuroscience Program, University of Guelph, Guelph, ON, N1G2W1, Canada. parkerl@uoguelph.ca.
Abstract
RATIONALE: Cannabidiol (CBD), a non-intoxicating component of cannabis, or the psychoactive Δ9-tetrahydrocannabiol (THC), shows anti-hyperalgesia and anti-inflammatory properties. OBJECTIVES: The present study evaluates the anti-inflammatory and anti-hyperalgesia effects of CBD's potent acidic precursor, cannabidiolic acid (CBDA), in a rodent model of carrageenan-induced acute inflammation in the rat hind paw, when administered systemically (intraperitoneal, i.p.) or orally before and/or after carrageenan. In addition, we assess the effects of oral administration of THC or CBDA, their mechanism of action, and the efficacy of combined ineffective doses of THC and CBDA in this model. Finally, we compare the efficacy of CBD and CBDA. RESULTS: CBDA given i.p. 60 min prior to carrageenan (but not 60 min after carrageenan) produced dose-dependent anti-hyperalgesia and anti-inflammatory effects. In addition, THC or CBDA given by oral gavage 60 min prior to carrageenan produced anti-hyperalgesia effects, and THC reduced inflammation. The anti-hyperalgesia effects of THC were blocked by SR141716 (a cannabinoid 1 receptor antagonist), while CBDA's effects were blocked by AMG9810 (a transient receptor potential cation channel subfamily V member 1 antagonist). In comparison to CBDA, an equivalent low dose of CBD did not reduce hyperalgesia, suggesting that CBDA is more potent than CBD for this indication. Interestingly, when ineffective doses of CBDA or THC alone were combined, this combination produced an anti-hyperalgesia effect and reduced inflammation. CONCLUSION: CBDA or THC alone, as well as very low doses of combined CBDA and THC, has anti-inflammatory and anti-hyperalgesia effects in this animal model of acute inflammation.
RATIONALE: Cannabidiol (CBD), a non-intoxicating component of cannabis, or the psychoactive Δ9-tetrahydrocannabiol (THC), shows anti-hyperalgesia and anti-inflammatory properties. OBJECTIVES: The present study evaluates the anti-inflammatory and anti-hyperalgesia effects of CBD's potent acidic precursor, cannabidiolic acid (CBDA), in a rodent model of carrageenan-induced acute inflammation in the rat hind paw, when administered systemically (intraperitoneal, i.p.) or orally before and/or after carrageenan. In addition, we assess the effects of oral administration of THC or CBDA, their mechanism of action, and the efficacy of combined ineffective doses of THC and CBDA in this model. Finally, we compare the efficacy of CBD and CBDA. RESULTS:CBDA given i.p. 60 min prior to carrageenan (but not 60 min after carrageenan) produced dose-dependent anti-hyperalgesia and anti-inflammatory effects. In addition, THC or CBDA given by oral gavage 60 min prior to carrageenan produced anti-hyperalgesia effects, and THC reduced inflammation. The anti-hyperalgesia effects of THC were blocked by SR141716 (a cannabinoid 1 receptor antagonist), while CBDA's effects were blocked by AMG9810 (a transient receptor potential cation channel subfamily V member 1 antagonist). In comparison to CBDA, an equivalent low dose of CBD did not reduce hyperalgesia, suggesting that CBDA is more potent than CBD for this indication. Interestingly, when ineffective doses of CBDA or THC alone were combined, this combination produced an anti-hyperalgesia effect and reduced inflammation. CONCLUSION:CBDA or THC alone, as well as very low doses of combined CBDA and THC, has anti-inflammatory and anti-hyperalgesia effects in this animal model of acute inflammation.
Authors: Valéria Tékus; Kata Bölcskei; Agnes Kis-Varga; László Dézsi; Eva Szentirmay; András Visegrády; Csilla Horváth; János Szolcsányi; Gábor Petho Journal: Eur J Pharmacol Date: 2010-06-08 Impact factor: 4.432
Authors: D C Hammell; L P Zhang; F Ma; S M Abshire; S L McIlwrath; A L Stinchcomb; K N Westlund Journal: Eur J Pain Date: 2015-10-30 Impact factor: 3.931
Authors: Douglas L Boggs; Jacques D Nguyen; Daralyn Morgenson; Michael A Taffe; Mohini Ranganathan Journal: Neuropsychopharmacology Date: 2017-09-06 Impact factor: 7.853
Authors: S A Varvel; J L Wiley; R Yang; D T Bridgen; K Long; A H Lichtman; B R Martin Journal: Psychopharmacology (Berl) Date: 2006-03-30 Impact factor: 4.530
Authors: Yan-Hong Wang; Bharathi Avula; Mahmoud A ElSohly; Mohamed M Radwan; Mei Wang; Amira S Wanas; Zlatko Mehmedic; Ikhlas A Khan Journal: Planta Med Date: 2017-12-20 Impact factor: 3.352
Authors: Stevie C Britch; Alan G Goodman; Jenny L Wiley; Abby M Pondelick; Rebecca M Craft Journal: J Pharmacol Exp Ther Date: 2020-03-16 Impact factor: 4.030
Authors: Marieka V DeVuono; Olivia La Caprara; Gavin N Petrie; Cheryl L Limebeer; Erin M Rock; Matthew N Hill; Linda A Parker Journal: Cannabis Cannabinoid Res Date: 2020-12-21
Authors: Lyndsey L Anderson; Marika Heblinski; Nathan L Absalom; Nicole A Hawkins; Michael T Bowen; Melissa J Benson; Fan Zhang; Dilara Bahceci; Peter T Doohan; Mary Chebib; Iain S McGregor; Jennifer A Kearney; Jonathon C Arnold Journal: Br J Pharmacol Date: 2021-09-30 Impact factor: 9.473
Authors: Lyndsey L Anderson; Maia G Etchart; Dilara Bahceci; Taliesin A Golembiewski; Jonathon C Arnold Journal: Sci Rep Date: 2021-07-22 Impact factor: 4.379