Regulation of bone mass, bone loss and osteoclast activity by cannabinoid receptors
Open accessAbstract
Accelerated osteoclastic bone resorption has a central role in the pathogenesis of osteoporosis and other bone diseases. Identifying the molecular pathways that regulate osteoclast activity provides a key to understanding the causes of these diseases and to the development of new treatments. Here we show that mice with inactivation of cannabinoid type 1 (CB1) receptors have increased bone mass and are protected from ovariectomy-induced bone loss. Pharmacological antagonists of CB1 and CB2 receptors prevented ovariectomy-induced bone loss in vivo and caused osteoclast inhibition in vitro by promoting osteoclast apoptosis and inhibiting production of several osteoclast survival factors. These studies show that the CB1 receptor has a role in the regulation of bone mass and ovariectomy-induced bone loss and that CB1- and CB2-selective cannabinoid receptor antagonists are a new class of osteoclast inhibitors that may be of value in the treatment of osteoporosis and other bone diseases.
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Increased β-adrenergic activity can reduce bone mass.
“Increased β-adrenergic activity can decrease bone mass, but other neural pathways may be involved (104, 105).”
From Pathogenesis of osteoporosis: concepts, conflicts, and prospects (2005) · cites this paper as [104]
The Introduction (page unavailable) says neuroendocrine pathways and neurotransmitters regulate bone remodelling, but does not identify β-adrenergic activity. The Results and Discussion (pages unavailable) address cannabinoid receptors and bone mass; searches for β-adrenergic activity and sympathetic signalling found no passage supporting the specific claim. (LLM, conf=0.74)
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References 25 · Cited by 356
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- Authors
- Idris, A. I., van 't Hof, R. J., Greig, I. R., Ridge, S. A., Baker, D., Ross, R. A., & Ralston, S. H.
- Affiliations
- University of Aberdeen (GB)
- UCL Queen Square Institute of Neurology (GB)
- Corresponding author
- Ralston, Stuart H
- Venue
- Nature Medicine
- Published
- 2005-05-22
- Volume
- 11
- Issue
- 7
- Pages
- 774-779
- ISSN
- 1078-8956 (ISSN-L)
- 1546-170X
- PMC
- PMC1430341
- OpenAlex
- W2165884167
- Cited by
- 356
- References
- 25
- Citations by year
- 2026: 16 · 2025: 5 · 2024: 9 · 2023: 14 · 2022: 19 · 2021: 14 · 2020: 13 · 2019: 16 · 2018: 10 · 2017: 19 · 2016: 12 · 2015: 19 · 2014: 8 · 2013: 14 · 2012: 15
- FWCI
- 10.14
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Licence
- www.springer.com/tdm (tdm)
- Locations
- Nature Medicine (publishedVersion)
- PubMed (publishedVersion)
- PubMed Central (acceptedVersion)
- Edinburgh Research Explorer (University of Edinburgh) (submittedVersion, other-oa)
- Funders
- Multiple Sclerosis Society
- National Institutes of Health
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bone Metabolism and Diseases
- Health Sciences › Medicine › Pharmacology › Cannabis and Cannabinoid Research
- Health Sciences › Medicine › Orthopedics and Sports Medicine › Bone health and osteoporosis research
- Keywords
- cannabinoid receptors, CB1 receptor, CB2 receptor, osteoclasts, bone resorption, bone loss, osteoporosis, ovariectomy, osteoclast apoptosis, cannabinoid receptor antagonists, bone mass regulation
- MeSH terms
- Animals, Bone and Bones, Bone Resorption, Camphanes, Carrier Proteins, Cells, Cultured, Female, Indoles, Ligands, Membrane Glycoproteins, Mice, Inbred C57BL, Osteoclasts, Ovariectomy, Piperidines, Pyrazoles, Rabbits, Bone Density, Apoptosis, Mice, Knockout, Receptor, Cannabinoid, CB1, Receptor, Cannabinoid, CB2, Mice, RANK Ligand, Receptor Activator of Nuclear Factor-kappa B
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