Plasma Membrane Calcium ATPase Downregulation in Dopaminergic Neurons Induces Presynaptic Dysfunction and Neuronal Vulnerability In Vivo and In Vitro
This study demonstrates that adult-specific downregulation of Plasma Membrane Calcium ATPase (PMCA) in *Drosophila* dopaminergic neurons disrupts calcium homeostasis to cause presynaptic dysfunction and increased neuronal vulnerability, revealing a pre-degenerative state where synaptic alterations precede overt neurodegeneration.