E Kozela, M Krawczyk, T Kos, A Juknat, Z Vogel and P Popik,
Molecular neurobiology , Dec 2019 11
Cannabidiol (CBD), a non-psychotropic cannabinoid, demonstrates antipsychotic-like and procognitive activities in humans and in animal models of schizophrenia. The mechanisms of these beneficial effects of CBD are unknown. Here, we examined behavioral effects of CBD in a pharmacological model of schizophrenia-like cognitive deficits induced by repeated ketamine (KET) administration. In parallel, we assessed transcriptional changes behind CBD activities in the prefrontal cortex (PFC), the main brain area linked to schizophrenia-like pathologies. Male Sprague-Dawley rats were injected for 10 days with KET followed by 6 days of CBD. The cognitive performance was evaluated in the novel object recognition test followed by PFC dissections for next-generation sequencing (RNA-Seq) analysis and bioinformatics. We observed that KET-induced learning deficits were rescued by CBD (7.5 mg/kg). Similarly, CBD reversed transcriptional changes induced by KET. The majority of the genes affected by KET and KET-CBD were allocated to astroglial and microglial cells and associated with immune-like processes mediating synaptogenesis and neuronal plasticity. These genes include C1qc, C1qa, C1qb, C2, and C3 complement cascade elements, Irf8 factor and Gpr84, Gpr34, Cx3cr1, P2ry12, and P2ry6 receptors. The main pathway regulators predicted to be involved included TGFβ1 and IFNγ. In addition, CBD itself upregulated oxytocin mRNA in the PFC. The present data suggest that KET induces cognitive deficits and transcriptional changes in the PFC and that both effects are sensitive to a reversal by CBD treatment.
In this study they used 7.5 mg/kg in adult rats who were given ketamine (not a neurodevelopmental model).
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If only my cognitive issues were because I was on ketamine. Or if only I were on ketamine and didn’t care about my cognitive issues.
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Ketamine is used sometimes to create SZ model rodents by giving it during development (which is a developmental model) or in adult rodents, where it still creates some schizophrenia like symptoms, but isn’t a developmental model.
It is probably useful to model NMDAR hypofunction either way though.
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It is an anesthetic with dissociative effects. It is a NMDAR antagonist. In humans and mice it mimics some schizophrenia symptoms.
So ketamine causes schizophrenia?lol
No, but it mimics some of the symptoms.
Although you would probably not want to take it if you had schizophrenia or schizophrenia risk factors.
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So cbd is good for schizophrenia? I’m an avid cbd flower user.
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There are some human trials that have positive results, but it’s not yet conclusive. There will be more trials ending in 2020, 2021 and 2024. I would say it looks pretty good but we’ll see.
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