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        Neuronal Oxidative Injury and Biomarkers of Lipid Peroxidation

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        Oxidative stress is implicated as one of the major underlying mechanisms in a variety of human diseases. Reactive radicals, derived primarily from molecular oxygen, readily attack a variety of critical biological molecules, including DNA, cellular proteins, and lipids. Since lipid peroxidation is a central feature of cerebral oxidant injury, measurements of peroxidation products, such as F2 -isoprostanes (F2 -IsoPs) and F4 -neuroprostanes (F4 -NeuroPs), represent the most accurate approaches to identify oxidative injury in vivo. Our laboratory uses a gas chromatography/mass spectrometry negative ion chemical ionization with select ion monitoring for quantification of these biomarkers of oxidative stress in a plethora of biological media. This review summarizes state-of-the-art methodology for F2 -IsoPs and F4 -NeuroPs analyses and discusses the utility of these prostaglandin-like compounds as in vivo biomarkers of neuronal oxidative injury.
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