ArticleAnnals of the New York Academy of Sciences2008
Functional expression of brain neuronal CB2 cannabinoid receptors are involved in the effects of drugs of abuse and in depression.
Article in Annals of the New York Academy of Sciences, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 88 papers, 2 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
88 citing papers in PubMed, 2 syntheses or guidelines pooled it, 182 citations in OpenAlex.
- Cannabinoids for the treatment of dementia.The Cochrane database of systematic reviews · 2021Pooled it
- Cannabinoid Receptors: An Update on Cell Signaling, Pathophysiological Roles and Therapeutic Opportunities in Neurological, Cardiovascular, and Inflammatory Diseases.International journal of molecular sciences · 2020Pooled it
- CNR2 functional variant (Q63R) influences childhood immune thrombocytopenic purpura.Haematologica · 2011Trial
- Distinct contributions of mu opioid and CB2 cannabinoid receptors to neuroimmune and behavioral responses.Advances in drug and alcohol research · 2026Article
- Involvement of CB1R and CB2R Ligands in Sleep Disorders and Addictive Behaviors in the Last 25 Years.Pharmaceuticals (Basel, Switzerland) · 2025Review
- Cannabis use, oral dysbiosis, and neurological disorders.NeuroImmune pharmacology and therapeutics · 2024Review
- Modulation of Oxidative Stress and Neuroinflammation by Cannabidiol (CBD): Promising Targets for the Treatment of Alzheimer's Disease.Current issues in molecular biology · 2024Review
- Beta-Caryophyllene, a Cannabinoid Receptor Type 2 Selective Agonist, in Emotional and Cognitive Disorders.International journal of molecular sciences · 2024Review
- Cannabinoid CB2 receptors and hypersensitivity to methamphetamine: Vulnerability to schizophrenia.Progress in neuro-psychopharmacology & biological psychiatry · 2024Article
- Peripheral Endocannabinoid Components and Lipid Plasma Levels in Patients with Resistant Migraine and Co-Morbid Personality and Psychological Disorders: A Cross-Sectional Study.International journal of molecular sciences · 2024Article
- Psychiatric Comorbidities of Inflammatory Bowel Disease: It Is a Matter of Microglia's Gut Feeling.Cells · 2024Review
- Dysregulation of the endogenous cannabinoid system following opioid exposure.Psychiatry research · 2023Review
- The Interplay between Cannabinoid Receptors and Microglia in the Pathophysiology of Alzheimer's Disease.Journal of clinical medicine · 2023Review
- Neuroinflammation in the Central Nervous System: Exploring the Evolving Influence of Endocannabinoid System.Biomedicines · 2023Review
- Cannabinoids in Medicine: A Multifaceted Exploration of Types, Therapeutic Applications, and Emerging Opportunities in Neurodegenerative Diseases and Cancer Therapy.Biomolecules · 2023Review
- Differential Regulation of Prelimbic and Thalamic Transmission to the Basolateral Amygdala by Acetylcholine Receptors.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2023Article
- Impact of the Cannabinoid System in Alzheimer's Disease.Current neuropharmacology · 2023Review
- Alcohol induced behavioral and immune perturbations are attenuated by activation of CB2 cannabinoid receptors.Advances in drug and alcohol research · 2023Article
- Cannabinoids as Prospective Anti-Cancer Drugs: Mechanism of Action in Healthy and Cancer Cells.Advances in experimental medicine and biology · 2023Article
- Cannabinoid CB2 Receptors in Neurodegenerative Proteinopathies: New Insights and Therapeutic Potential.Biomedicines · 2022Review
28 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
22 authors at 8 institutions in 3 countries.
Funding
Abstract
Major depression and addiction are mental health problems associated with stressful events in life with high relapse and recurrence even after treatment. Many laboratories were not able to detect the presence of CB2 cannabinoid receptors (CB2-Rs) in healthy brains, but CB2-R expression has been demonstrated in rat microglial cells and other brain-associated cells during inflammation. Thus, neuronal expression of CB2-Rs has been ambiguous and controversial, and its role in depression and substance abuse is unknown. In this study we tested the hypothesis that genetic variants of the CB2 gene might be associated with depression in a human population and that alteration in CB2 gene expression may be involved in the effects of abused substances, including opiates, cocaine, and ethanol, in rodents. Here we demonstrate that a high incidence of Q63R but not H316Y polymorphism in the CB2 gene was found in Japanese depressed subjects. CB2-Rs and their gene transcripts are expressed in the brains of naïve mice and are modulated after exposure to stressors and administration of abused drugs. Mice that developed an alcohol preference had reduced CB2 gene expression, and chronic treatment with JWH015 a putative CB2-R agonist, enhanced alcohol consumption in stressed but not in control mice. The direct intracerebroventricular microinjection of CB2 antisense oligonucleotide into the mouse brain reduced mouse aversions in the plus-maze test, indicating the functional presence of CB2-Rs in the brain that modifies behavior. Using electron microscopy we report the subcellular localization of CB2-Rs that are mainly on postsynaptic elements in rodent brain. Our data demonstrate the functional expression of CB2-Rs in the brain that may provide novel targets for the effects of cannabinoids in depression and substance abuse disorders beyond neuroimmunocannabinoid activity.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.