Cited by 83Cannabis and Cannabinoid ResearchAlzheimer's disease research and treatmentsParkinson's Disease Mechanisms and Treatments

Contrasting protective effects of cannabinoids against oxidative stress and amyloid-β evoked neurotoxicity in vitro

Harvey, Benjamin S., Ohlsson, Katharina S., Mååg, Jesper L.V., Musgrave, Ian F., Smid, Scott D.·2012·NeuroToxicology

Abstract

Cannabinoids have been widely reported to have neuroprotective properties in vitro and in vivo. In this study we compared the effects of CB1 and CB2 receptor-selective ligands, the endocannabinoid anandamide and the phytocannabinoid cannabidiol, against oxidative stress and the toxic hallmark Alzheimer's protein, β-amyloid (Aβ) in neuronal cell lines. PC12 or SH-SY5Y cells were selectively exposed to either hydrogen peroxide, tert-butyl hydroperoxide or Aβ, alone or in the presence of the CB1 specific agonist arachidonyl-2'-chloroethylamide (ACEA), CB2 specific agonist JWH-015, anandamide or cannabidiol. Cannabidiol improved cell viability in response to tert-butyl hydroperoxide in PC12 and SH-SY5Y cells, while hydrogen peroxide-mediated toxicity was unaffected by cannabidiol pretreatment. Aβ exposure evoked a loss of cell viability in PC12 cells. Of the cannabinoids tested, only anandamide was able to inhibit Aβ-evoked neurotoxicity. ACEA had no effect on Aβ-evoked neurotoxicity, suggesting a CB1 receptor-independent effect of anandamide. JWH-015 pretreatment was also without protective influence on PC12 cells from either pro-oxidant or Aβ exposure. None of the cannabinoids directly inhibited or disrupted preformed Aβ fibrils and aggregates. In conclusion, the endocannabinoid anandamide protects neuronal cells from Aβ exposure via a pathway unrelated to CB1 or CB2 receptor activation. The protective effect of cannabidiol against oxidative stress does not confer protection against Aβ exposure, suggesting divergent pathways for neuroprotection of these two cannabinoids.

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Crossref · 10.1016/j.neuro.2011.12.015

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Authors
Harvey, B. S., Ohlsson, K. S., Mååg, J. L. V., Musgrave, I. F., & Smid, S. D.
Affiliations
  • The University of Adelaide (AU)
  • University of Gothenburg (SE)
  • Uppsala University (SE)
Corresponding author
Smid, Scott D.
Venue
NeuroToxicology
Publisher
Elsevier BV
Published
2012-01
Volume
33
Issue
1
Pages
138-146
ISSN
0161-813X (ISSN-L)
OpenAlex
W2069283073
Cited by
82
References
55
Citations by year
2026: 2 · 2025: 3 · 2024: 6 · 2023: 6 · 2022: 4 · 2021: 7 · 2020: 6 · 2019: 5 · 2018: 7 · 2017: 7 · 2016: 3 · 2015: 3 · 2014: 7 · 2013: 11 · 2012: 4
FWCI
6.11
Type
journal article
Language
en
Open access
closed
Locations
  • NeuroToxicology (publishedVersion)
  • PubMed (publishedVersion)
  • Adelaide Research & Scholarship (AR&S) (University of Adelaide) (submittedVersion)
Funders
University of Adelaide
Topics
  • Health Sciences › Medicine › Pharmacology › Cannabis and Cannabinoid Research
  • Health Sciences › Medicine › Physiology › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Neurology › Parkinson's Disease Mechanisms and Treatments
Keywords
cannabinoids, neuroprotection, oxidative stress, amyloid-beta, Alzheimer's disease, anandamide, cannabidiol, CB1 receptor, CB2 receptor, ACEA, JWH-015, hydrogen peroxide, tert-butyl hydroperoxide, PC12 cells, SH-SY5Y cells
MeSH terms
Analysis of Variance, Animals, Antioxidants, Arachidonic Acids, Cannabinoids, Cell Survival, Chromans, Drug Interactions, Gene Expression Regulation, Humans, Hydrogen Peroxide, Indoles, Neuroblastoma, Peptide Fragments, Thiazoles, Lipid Peroxidation, Amyloid beta-Peptides, PC12 Cells, Oxidative Stress, Receptor, Cannabinoid, CB1, Receptor, Cannabinoid, CB2, Cell Line, Tumor, Microscopy, Electron, Transmission, Rats, Benzothiazoles

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