ArticleBasic and clinical neuroscience
Protein Kinase Cɛ in the Platelet and Hippocampal Tissue as a Diagnostic Biological Marker in Alzheimer Disease.
Article in Basic and clinical neuroscience. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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5 authors at 2 institutions in 1 country.
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Abstract
introductionAlzheimer Disease (AD) is a neurodegenerative disorder characterized by the progressive loss of memory and other cognitive functions. Protein Kinase Cɛ (PKCɛ) is an isoform that most effectively suppresses Amyloid Beta (Aβ) production and synaptic loss.
methodsIn this study, spatial learning and memory for treated rats were evaluated by the Morris water maze test. The activity (total PKC), mRNA expression, and protein level of PKCɛ in the platelet and hippocampal tissue were evaluated using immunosorbent assay, real-time qPCR, and western blotting analysis, respectively.
resultsThe traveled distance was significantly prolonged, and escape latency significantly increased in Aβ-treated groups. PKC activity assay showed that there was a remarkable difference between the Aβ-treated and sham-operated groups on days 10 and 30 in the hippocampus and also day 30 in platelet after the injection of Aβ. A significant effect in PKC activity was observed between days 0 and 10, days 0 and 30, as well as days 5 and 30. Aβ significantly downregulated the PKCɛ mRNA expression in the hippocampus of rats on day 30; however, no significant difference was observed in platelet. Western blot analysis demonstrated that Aβ significantly reduced PKCɛ protein expression in the hippocampus of treated groups on day 30.
conclusionThe expression level of PKCɛ was downregulated following the injection of Aβ in the hippocampus, but no significant difference was observed between the AD and sham groups in platelet that may be due to the low concentration of PKCɛ or duration of Aβ exposure in the rat brain.
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