CBD improved memory and social behavior in a female rat model of schizophrenia
CBD treatment reversed recognition memory deficits and social interaction problems in female rats from a maternal immune activation model of schizophrenia, while also normalizing glutamate receptor levels in the prefrontal cortex.
Quick Facts
What This Study Found
Three weeks of CBD treatment (10 mg/kg) restored recognition memory and social interaction in female poly I:C offspring. CBD also normalized NMDA receptor binding in the prefrontal cortex and increased GABA-related markers in the hippocampus. However, CBD reduced social behavior in healthy control rats.
Key Numbers
CBD dose: 10 mg/kg daily for ~3 weeks. 16 pregnant rats total. CBD restored recognition memory and sociability in poly I:C offspring but reduced social interaction in control rats.
How They Did This
Pregnant rats received poly I:C (immune activation) or saline on gestational day 15. Female offspring received CBD (10 mg/kg, i.p.) or vehicle for three weeks starting at postnatal day 56. Behavioral testing included novel object recognition, T-maze, and social interaction. Brain tissue was analyzed for endocannabinoid, glutamate, and GABA markers.
Why This Research Matters
Most schizophrenia research uses male animals. This study specifically tested CBD in female offspring, addressing a significant gap given that sex differences exist in schizophrenia onset and treatment response.
The Bigger Picture
CBD is being investigated as a potential antipsychotic. This study supports its benefits in a disease model but raises a caution: CBD may have different effects in healthy versus disease-state brains.
What This Study Doesn't Tell Us
Animal model; results may not translate to humans. Only one CBD dose was tested. The negative effects of CBD on control rats warrant further investigation.
Questions This Raises
- ?Why did CBD reduce social behavior in healthy rats but improve it in disease-model rats?
- ?Would different doses produce different results?
- ?How do these findings compare to the male offspring data from the same model?
Trust & Context
- Key Stat:
- CBD normalized NMDA receptor binding in prefrontal cortex
- Evidence Grade:
- Preliminary: single animal study using one dose in a maternal immune activation model.
- Study Age:
- Published in 2019.
- Original Title:
- Cannabidiol improves behavioural and neurochemical deficits in adult female offspring of the maternal immune activation (poly I:C) model of neurodevelopmental disorders.
- Published In:
- Brain, behavior, and immunity, 81, 574-587 (2019)
- Authors:
- Osborne, Ashleigh L, Solowij, Nadia(19), Babic, Ilijana, Lum, Jeremy S, Huang, Xu-Feng, Newell, Kelly A, Weston-Green, Katrina
- Database ID:
- RTHC-02213
Evidence Hierarchy
Tests effects in animals (usually mice or rats), not humans.
What do these levels mean? →Frequently Asked Questions
What is the maternal immune activation model?
Researchers activate a pregnant rat's immune system with a viral mimic (poly I:C). The offspring develop brain and behavioral changes that resemble aspects of schizophrenia, making it a common model for studying the disorder.
Why did CBD hurt healthy rats but help the disease model?
The researchers suggested CBD may interact differently with brain systems that are already disrupted versus those functioning normally. This highlights that CBD is not universally beneficial across all brain states.
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Cite This Study
https://rethinkthc.com/research/RTHC-02213APA
Osborne, Ashleigh L; Solowij, Nadia; Babic, Ilijana; Lum, Jeremy S; Huang, Xu-Feng; Newell, Kelly A; Weston-Green, Katrina. (2019). Cannabidiol improves behavioural and neurochemical deficits in adult female offspring of the maternal immune activation (poly I:C) model of neurodevelopmental disorders.. Brain, behavior, and immunity, 81, 574-587. https://doi.org/10.1016/j.bbi.2019.07.018
MLA
Osborne, Ashleigh L, et al. "Cannabidiol improves behavioural and neurochemical deficits in adult female offspring of the maternal immune activation (poly I:C) model of neurodevelopmental disorders.." Brain, 2019. https://doi.org/10.1016/j.bbi.2019.07.018
RethinkTHC
RethinkTHC Research Database. "Cannabidiol improves behavioural and neurochemical deficits ..." RTHC-02213. Retrieved from https://rethinkthc.com/research/osborne-2019-cannabidiol-improves-behavioural-and
Access the Original Study
Study data sourced from PubMed, a service of the U.S. National Library of Medicine, National Institutes of Health.
This study breakdown was produced by the RethinkTHC research team. We analyze and report published research findings without making health recommendations. All interpretations are based solely on the published abstract and study data.