Mitochondria are specialized subunits inside a cell that produce the cell’s energy and regulate its metabolism. Research suggests that mitochondria may play a central role in neuronal cell survival because they regulate both energy metabolism and cell death pathways. Using genetic mouse models of Alzheimer’s disease, researchers from Mayo Clinic have found that mitochondria in the brain are dysfunctional early in the disease. The findings were recently published in the open access journal PLoS ONE.