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Cannabinoid type 2 receptor inhibition enhances the antidepressant and proneurogenic effects of physical exercise after chronic stress
Open accessPreprint — published as 10.1038/s41398-024-02877-0 · Paper page
Abstract
Chronic stress is a major risk factor of neuropsychiatric conditions such as depression. Adult hippocampal neurogenesis (AHN) has emerged as a promising target to counteract stress-related disorders given the ability of newborn neurons to facilitate endogenous plasticity. Recent data sheds light on the interaction between cannabinoids and neurotrophic factors underlying the regulation of AHN, with important effects upon cognitive plasticity and emotional flexibility. Since physical exercise (PE) is known to enhance neurotrophin levels, we hypothesized that PE could engage with cannabinoids to influence AHN and that this would result in beneficial effects under stressful conditions. We therefore investigated the actions of modulating cannabinoid type 2 receptors (CB2R), which are devoid of psychotropic effects, in combination with PE in chronically stressed animals. We found that CB2R inhibition, but not CB2R activation, in combination with PE significantly ameliorated stress-evoked emotional changes and cognitive deficits. Importantly, this combined strategy critically shaped stress-induced changes in AHN dynamics, leading to a significant increase in the rates of cell proliferation and differentiation of newborn neurons, and an overall reduction in neuroinflammation. Together, these results show that CB2Rs are crucial regulators of the beneficial effects of PE in countering the effects of chronic stress. Our work emphasizes the importance of understanding the mechanisms behind the actions of cannabinoids and PE and provides a framework for future therapeutic strategies to treat stress-related disorders that capitalize on lifestyle interventions complemented with endocannabinoid pharmacomodulation.
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Tartt, A. N., Mariani, M. B., Hen, R., Mann, J. J., & Boldrini, M. (2022) · Molecular Psychiatry · doi:10.1038/s41380-022-01520-y · Cited by 408
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Metadata
- Authors
- Xapelli, S., Rodrigues, R., Moreira, J., Vaz, S., Barateiro, A., Paulo, S., Mateus, J., Lourenço, D., Ribeiro, F., Loureiro-Campos, E., Bielefeld, P., Fitzsimons, C., fernandes, A., Sebastião, A., & Pinto, L.
- Affiliations
- University of Lisbon (PT)
- University of Amsterdam (NL)
- University of Minho (PT)
- Corresponding author
- Xapelli, Sara
- ORCID
- Venue
- Translational Psychiatry
- Published
- 2023-06-17
- Volume
- 14
- Issue
- 1
- Pages
- 170-170
- ISSN
- 2158-3188 (ISSN-L)
- PMC
- PMC10981758
- OpenAlex
- W4393334203
- Cited by
- 12
- References
- 1
- Citations by year
- 2026: 4 · 2025: 7 · 2024: 1
- FWCI
- 3.41
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Locations
- Translational Psychiatry (publishedVersion, cc-by)
- bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by-nc-nd)
- Research Square (acceptedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- HAL (submittedVersion, cc-by)
- UvA-DARE (University of Amsterdam) (submittedVersion, cc-by)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Oskar-Bordeaux (Universite de Bordeaux) (submittedVersion, cc-by)
- Portuguese National Funding Agency for Science, Research and Technology (RCAAP Project by FCT) (submittedVersion, other-oa)
- Funders
- European Commission (H2020-WIDESPREAD-05-2020-Twinning (EpiEpinet, 2020 ‘, 952455, HORIZON2020, H2020)
- International Brain Research Organization
- International Society for Neurochemistry
- Horizon 2020 Framework Programme (952455)
- Fundação para a Ciência e a Tecnologia (2020.04492.BD, PTDC/MED-PAT/2582/2021, UIDB/04138/2020; UIDP/04138/ 2020, 04138, PD/BD/150341/2019, 2022.02201.PTDC, UIDB/04138, IF/01227/2015, COVID/BD/151880/2021, H2020, PD/BD/141784/2018, SFRH/BD/129710/2017, PD/BD/150343/2019, /2017, 2020.02855.CEECIND, 952455, UIDB/04138/2020, 2020.04492, UIDP/04138/2020)
- Erasmus+
- Topics
- Health Sciences › Medicine › Pharmacology (medical) › Cannabis and Cannabinoid Research
- Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
- Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
- Keywords
- cannabinoid type 2 receptor, physical activity, chronic stress, adult hippocampal neurogenesis, depression, brain-derived neurotrophic factor, neuroinflammation, neurotrophic factors, stress-related disorders, cognitive impairment, emotional flexibility
- MeSH terms
- Animals, Antidepressive Agents, Cannabinoids, Hippocampus, Exercise, Receptors, Cannabinoid, Neurogenesis
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