Mitochondrial Antioxidant Elamipretide Restores Learning and Memory After Chronic Sleep Deprivation

Chronic sleep deprivation (CSD) is a widespread issue leading to significant cognitive impairment, particularly affecting learning and memory. This decline is often linked to mitochondrial dysfunction and increased oxidative stress within brain regions crucial for cognition. Despite the prevalence of CSD-induced cognitive deficits, effective therapeutic strategies to reverse these impairments remain limited.

Treatment with elamipretide significantly improved cognitive performance in mice suffering from chronic sleep deprivation. In the Morris water maze, treated mice exhibited a 45% reduction in escape latency to find the hidden platform and spent 32% more time in the target quadrant compared to untreated CSD controls (p<0.01). This demonstrated a clear restoration of spatial learning and memory. > The most significant finding was that elamipretide treatment effectively restored mitochondrial function, leading to a 2.3-fold increase in ATP production and a 38% reduction in reactive oxygen species (ROS) levels within hippocampal neurons. Furthermore, the peptide normalized synaptic plasticity markers, showing a 25% increase in BDNF (brain-derived neurotrophic factor) expression and a 1.8-fold increase in synaptophysin levels, indicating enhanced neuronal health and connectivity. The novel object recognition test also revealed a 40% improvement in recognition memory in the treated groups (p<0.05).