Treadmill exercise decreases β-amyloid burden in APP/PS1 transgenic mice involving regulation of the unfolded protein response

Mar 26, 2019Neuroscience letters

Treadmill exercise may reduce harmful protein buildup in Alzheimer’s model mice by affecting cell stress responses

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Abstract

Three months of treadmill exercise resulted in a robust reduction in Aβ plaques and soluble forms of Aβ in the hippocampus of APP/PS1 mice.

  • Exercise led to a significant decrease in the expression of BACE1 and presenilin-1, which are involved in amyloid production.
  • Treadmill exercise down-regulated the expression of GRP78, indicating a potential modulation of the unfolded protein response (UPR).
  • Activation of UPR signaling pathways, including PERK, eIF2α, and ATF4, was inhibited following the exercise regimen.
  • The findings suggest a possible link between exercise, UPR signaling, and amyloid reduction in a mouse model of Alzheimer's disease.

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