Posted on 4 February 2016
Ampakines are known mental stimulants, but in rats they can also shelter the brain from age-related decline and even reverse deterioriationA number of changes happen in the aging brain and one of these is a dendritic loss which onsets around middle age. In a new study, researchers have shown a particular drug belonging to the ampakine class of compounds, has significant neuroprotective properties. Shielding the brain Ampakines have already been shown to aid cognitive function in older rats, and they also appear to boost levels of BDNF, brain derived neurotrophic factor, which is associated with staving off neural decline. In the latest study using one such ampakine, older rat brains were compared to adolescent samples . While untreated rats had short dendrites and fewer dendritic branches, after 3 months of treatment older rat brains were identical to younger ones. If that wasn’t enough, they showed enhanced signalling and even had more dendritic spines than the adolescent rats did. Making an old rat behave young The treated rats were also quicker at adjusting to a new environment, and showed increased memory too. They were better at exploring unfamiliar surroundings.
“The importance of optimizing cognitive function across the lifespan cannot be overstated. This study is particularly interesting because the drug effect was selective in the brain functions and behaviors that were changed. This is the kind of specificity that could make translation to the clinic possible. The next step is to repeat the study”The data is exciting, but it needs more research to confirm safety and dosages, and whether it has a similar effect in humans. Read more at NeuroscienceNews
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