"Many diseases are multifactorial and can not be understood by simple molecular associations alone. Alzheimer's disease (AD)is associated with toxic transformations in two classes of protein,amyloid beta and tau, but they do not explain the full underlying pathology. On the cellular scale, much of the real-time morphological changes in neurons can be attributed to their underlying mitochondrial dynamics—namely fission, fusion, and the motions between these events. Last year, researchers from Harvard Medical School made the intriguing discovery that alterations in tau could lead to a doubling in the length of mitochondria. This week, they published a review article in Trends in Neuroscience, in which they seek to explain the primary features of AD in terms of mitochondrial dynamics."
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