Targeting Synaptic NMDA Receptor Co-agonism as a Therapy for Alzheimer's Disease?

Alzheimer's disease (AD) is associated with lower brain glucose metabolism. In this issue, Le Douce et al. (2020) show that this leads to insufficient astrocyte-dependent production of D-serine, co-agonist of synaptic NMDA receptors. Oral L-serine therapy rescues NMDA receptor hypofunction, plasticity, and cognition in an AD model, suggesting a new therapeutic strategy. Crown