Stem Cells and Neurogenesis in Relation to Dementia and Alzheimer’s Disease Mouse Models

Alzheimer’s disease (AD) is a devastating neurodegenerative disorder associated with progressive cognitive decline and extensive neuropathology throughout the brain. Its main features include limited cell loss in selected subregions, generalized brain atrophy, and gradual accumulation of β-amyloid plaques and neurofibrillary tangles in several brain regions. One of the earliest and most prominently affected brain regions is the hippocampus, a brain structure involved in learning and memory that displays prominent cell loss in its CA1 subregion as well as abundant plaque and tangle pathology.