Mitochondria are the powerhouses of our cells.
Before Alzheimer's patients experience memory loss, the brain's neurons have already suffered harm for years.
A new study in mouse models by researchers at Columbia University Medical Center has found that the brain's mitochondria -- the powerhouses of the cell -- are one of the earliest casualties of the disease. The study, which appeared in the online Early Edition of PNAS, also found that impaired mitochondria then injure the neurons' synapses, which are necessary for normal brain function.
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