Exercise’s Benefits to Dementia Can Be Made Chemically

Boosting both neurogenesis and a brain-derived growth factor can mimic the cognitive benefits of exercise in a mouse mode of Alzheimer’s disease.

Written byRuth Williams
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Mice that model a severe form of Alzheimer’s disease tend to exhibit improved memory after exercise-induced neuron production, according to a report in Science today (September 6). Similar improvements are also possible with an exercise work-around, by giving the animals a treatment to ramp-up neurogenesis together with a dose of brain-derived neurotrophic factor (BDNF).

“This paper was really exciting. . . . It is a proof of principle, in an animal model, that you can replace exercise by a bottled therapy,” says Alzheimer’s disease researcher Tara Spires-Jones of the University of Edinburgh who wrote a commentary about the paper, but was not involved in the research. However, “we’re a pretty long way from translating this study from mice into humans,” she adds.

“This [work] continues to emphasize the importance of physical exercise in sustaining the brain and fighting off brain degeneration”

Alzheimer’s disease is the most common form of age-related ...

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  • ruth williams

    Ruth is a freelance journalist. Before freelancing, Ruth was a news editor for the Journal of Cell Biology in New York and an assistant editor for Nature Reviews Neuroscience in London. Prior to that, she was a bona fide pipette-wielding, test tube–shaking, lab coat–shirking research scientist. She has a PhD in genetics from King’s College London, and was a postdoc in stem cell biology at Imperial College London. Today she lives and writes in Connecticut.

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