Amelioration of prediabetes-induced changes of dendritic structural plasticity
2019
: Accumulating evidence suggests that the diabetes-induced cognitive dysfunction can be alleviated when exposed to the enriched environment. However, the impact of the changes of the hippocampal plasticity on the cognitive decline and the possible effect of an enriched environment in prediabetes are still not clearly documented. To explore the effect of enriched environment for prediabetes-induced changes of dendritic structural plasticity in hippocampus pyramidal and cognitive deficits, the praxiology experiments for evaluating of anxiety, spatial learning and memory of prediabetic Wistar were performed, and then the dendritic spine density was assessed in the hippocampal CA1 pyramidal neuronal region. The prediabetic rats demonstrated a hyper-anxiety like behavior and significantly decreased spatial learning abilities and memory deficits. Exposing prediabetic rats to an enriched environment appeared to significantly mitigate the above changes in a time-dependent manner. The enriched environment also restored the density of the hippocampal dendritic spine which was significantly reduced in prediabetic rats. We found that the enriched environment was beneficial in overcoming the prediabetes-induced cognitive disorders and diminished dendritic plasticity of hippocampus pyramidal.
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