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- W2027885912 abstract "Unregulated production of reactive oxygen species (ROS) is a marker of cellular and organismal aging linked to cognitive decline in humans and rodents. The sources of elevated ROS contributing to cognitive decline are unknown. Because NADPH oxidase (Nox) inhibition may prevent memory decline with age, we hypothesized that Nox and not mitochondrial sources of synaptic ROS production are linked to individual variance in cognitive performance in aged mice. Young (8 months) and aged (26 months) mice were tested in the novel object recognition task (NORT). Mitochondrial and Nox ROS production was assayed in isolated synaptosomes using spin trapping electron paramagnetic resonance (EPR) spectroscopy. Aged mice exhibited variance in NORT performance, with some performing similar to young mice while others exhibited poorer short-term memory. EPR studies indicated that Nox rather than mitochondria was the major ROS source at the synapse, and Nox-induced but not mitochondrial-induced ROS levels correlated with NORT performance in aged mice. Our findings support the hypothesis that variance in Nox-specific synaptic ROS production may predict short-term memory deficits with age." @default.
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- W2027885912 date "2011-01-01" @default.
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- W2027885912 title "Initial evidence linking synaptic superoxide production with poor short-term memory in aged mice" @default.
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- W2027885912 doi "https://doi.org/10.1016/j.brainres.2010.11.009" @default.
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