Publications (2)6.06 Total impact

  • Hui-Li Liu · Gang Zhao · He Zhang · Li-de Shi ·
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    ABSTRACT: Previously our study has demonstrated that long-term treadmill exercise improved cognitive deficit in APP/PS1 transgenic mice of Alzheimer's disease (AD) paralleled by enhanced long-term potentiation (LTP). The present study was undertaken to further investigate whether the treadmill running could inhibit the progression of Alzheimer's disease (AD)-like neuropathology in hippocampus of the APP/PS1 mouse models of AD, and to define a potential molecular mechanism underlying the exercise-induced reduction in AD-like neuropathology. Five months of treadmill exercise resulted in a robust reduction in β-amyloid (Aβ) deposition and tau phosphorylation in the hippocampus of APP/PS1 mice. This was accompanied by a significant decrease in APP phosphorylation and PS1 expression. We also observed GSK3, rather than CDK5, was inhibited by treadmill exercise. These results indicate that treadmill exercise is sufficient to inhibit the progression of AD-like neuropathology in the hippocampus of APP/PS1 transgenic mouse model, and may mediate APP processing in favor of reduced Aβ deposition. In addition, we demonstrate that treadmill exercise attenuates AD-like neuropathology in AD transgenic mice via a GSK3 dependent signaling pathway.
    Behavioural brain research 08/2013; 256. DOI:10.1016/j.bbr.2013.08.008 · 3.03 Impact Factor
  • Hui-li Liu · Gang Zhao · Kui Cai · Hai-hua Zhao · Li-de Shi ·
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    ABSTRACT: Alzheimer's disease (AD) is a progressive neurodegenerative disease clinically characterized by learning and memory function deterioration. While it is well established that exercise can improve cognitive performance in AD, there have been few basic cellular and molecular mechanisms research performed to test the interaction between exercise and AD. In this study, we aimed at investigating whether treadmill exercise improves learning and memory function in APP/PS1 transgenic mouse model of Alzheimer's disease by enhancing long-term potentiation (LTP) and up-regulation of brain-derived neurotrophic factor (BDNF) mRNA expression. Our results show that, in comparison to wild type mice, transgenic mice were characterized by impaired learning and memory function, LTP deficits and increased BDNF mRNA levels. Treadmill exercise enhanced learning and memory function not only in wild type mice but also in APP/PS1 mice paralleled by LTP. However, BDNF has emerged as a crucial regulator of synaptic plasticity mechanisms underlying learning and memory in wild-type mice, but not in APP/PS1 mice. Hence, this investigation demonstrates that treadmill exercise is an effective therapeutic that alleviate learning and memory decline in APP/PS1 mouse model, and enhanced LTP maybe a cellular mechanism involved in neuropathological course of AD and cognitive improvement induced by exercise.
    Behavioural brain research 04/2011; 218(2):308-14. DOI:10.1016/j.bbr.2010.12.030 · 3.03 Impact Factor