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- W2009751520 abstract "Amyloid β-protein (Aβ) is the major amyloid component of toxic amyloid senile plaques inducing slow neuronal degeneration in brains of Alzheimer's patients. It can induce proteolysis of some cytoskeletal proteins in the neuron; however, studies of proteolytic enzyme activity in different brain regions and their subcellular compartmentalization were not carried out. In this work, the effects of chronic intracerebroventricular administration of Aβ(25-35) on proteolytic enzymes in subcellular fractions from rat brain regions were studied. Mitochondrial and cytosolic caspase-9 and caspase-3 activities in neocortex, cerebellum, and hippocampus were shown to be increased during infusion of Aβ(25-35). In Aβ(25-35)-treated rats, cytosolic calcium-dependent thiol proteases calpain-1 and calpain-2 appeared in mitochondria and lysosomes, causing apparent release of lysosomal cathepsins B and D to mitochondria and of β-galactosidase to the cytosol. The increase in all proteolytic activities in brain subcellular fractions under the influence of administered Aβ suggests that these enzymes could be transferred across intracellular membranes and involved in neurodegeneration." @default.
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- W2009751520 date "2011-01-01" @default.
- W2009751520 modified "2023-10-01" @default.
- W2009751520 title "Subcellular compartmentalization of proteolytic enzymes in brain regions and the effects of chronic β-amyloid treatment" @default.
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- W2009751520 doi "https://doi.org/10.1016/j.brainres.2010.10.078" @default.
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