Traumatic brain injury (TBI) can lead to long-term cognitive problems caused by oxidative stress, inflammation, and neuronal cell death following the initial injury. In this study, researchers investigated whether cannabidiol (CBD), a non-intoxicating compound from hemp, could improve cognitive impairment after TBI. Using both cell-based experiments and animal models of brain injury, scientists evaluated memory performance, neuronal survival, and molecular signaling pathways involved in brain recovery. (PubMed)

The findings showed that CBD significantly reduced neuronal oxidative stress and limited apoptosis, or programmed cell death, two major contributors to post-traumatic brain damage. Mechanistic analysis revealed that CBD directly interacted with a protein called SET, altering its location within the cell and influencing the SET/PP2A/Akt signaling axis. This process activated protective Akt signaling, which helped suppress oxidative damage and pro-apoptotic pathways while promoting neuronal survival. Animals treated with CBD demonstrated improved cognitive function compared with untreated injury models. (PubMed)

Overall, the study suggests that CBD may provide neuroprotective support following traumatic brain injury by targeting molecular pathways involved in cell survival and brain repair. Because the research was conducted in preclinical models rather than human clinical trials, further studies are needed to determine safety, dosing, and potential clinical applications in people recovering from TBI. (PubMed)

Source

Gao S, et al. Cannabidiol improves cognitive impairment after traumatic brain injury by attenuating neuronal oxidative stress and apoptosis via the SET/PP2A/Akt signaling axis. National Library of Medicine (NIH): https://pubmed.ncbi.nlm.nih.gov/41512358/