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Issue title: Alzheimer's Disease: Advances for a New Century
Guest editors: George Perry, Xiongwei Zhu, Mark A. Smith, Aaron Sorensen and Jesús Avila
Article type: Review Article
Authors: Praticò, Domenico; *
Affiliations: Center for Translational Medicine, Department of Pharmacology, Temple University School of Medicine, Philadelphia, PA, USA
Correspondence: [*] Correspondence to: Domenico Praticò, MD, Department of Pharmacology, Temple University School of Medicine, 3420 North Broad Street, MRB, 706A, Philadelphia, PA 19140, USA. Tel.: +1 215 707 9380; Fax: +1 215 707 7068; E-mail: [email protected].
Abstract: Alzheimer's disease (AD) is the most common neurodegenerative disorder associated with dementia in the elderly. Although the initiating events are still unknown, it is clear that AD results from a combination of genetic and environmental risk factors. Recently proposed diagnostic criteria, in addition to the clinical neuropsychological examination aimed at identifying the typical AD symptoms, include staging criteria based on AD biological measures related to its pathology. Despite the obvious benefits of these new criteria, an accurate diagnosis is not always easily reached because, particularly in its earliest stages, the symptoms of the disease are very variable. Biological measures, or biomarkers, of the disease should first facilitate an early and accurate diagnosis, have a prognostic and predictive value, and have the capacity to monitor therapeutic efficacy. While amyloid-β and tau represent the two key pathological features of the disease, other aspects of this complex disease are emerging as important mediators in its pathogenesis. Among them, oxidative stress is probably one of the most investigated, and so are biomarkers reflecting it. Intrinsic limitation of biomarkers is the fact that they do not define mechanism of disease, but by nature are associative and/or correlative and unable to prove causality. Longitudinal studies are helping us in this difficult task by providing a clearer picture of the dynamic relationship between biomarkers, AD neuropathology, and cognitive phenotype.
Keywords: Alzheimer's disease, amyloid-β, biomarkers, oxidative stress, tau
DOI: 10.3233/JAD-2012-129023
Journal: Journal of Alzheimer's Disease, vol. 33, no. s1, pp. S237-S241, 2013
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