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      A Review of Pterostilbene Antioxidant Activity and Disease Modification

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          Abstract

          Pterostilbene (trans-3,5-dimethoxy-4-hydroxystilbene) is a natural dietary compound and the primary antioxidant component of blueberries. It has increased bioavailability in comparison to other stilbene compounds, which may enhance its dietary benefit and possibly contribute to a valuable clinical effect. Multiple studies have demonstrated the antioxidant activity of pterostilbene in both in vitro and in vivo models illustrating both preventative and therapeutic benefits. The antioxidant activity of pterostilbene has been implicated in anticarcinogenesis, modulation of neurological disease, anti-inflammation, attenuation of vascular disease, and amelioration of diabetes. In this review, we explore the antioxidant properties of pterostilbene and its relationship to common disease pathways and give a summary of the clinical potential of pterostilbene in the prevention and treatment of various medical conditions.

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          Alzheimer's disease: strategies for disease modification.

          Martin Citron (2010)
          Alzheimer's disease is the largest unmet medical need in neurology. Current drugs improve symptoms, but do not have profound disease-modifying effects. However, in recent years, several approaches aimed at inhibiting disease progression have advanced to clinical trials. Among these, strategies targeting the production and clearance of the amyloid-beta peptide - a cardinal feature of Alzheimer's disease that is thought to be important in disease pathogenesis - are the most advanced. Approaches aimed at modulating the abnormal aggregation of tau filaments (another key feature of the disease), and those targeting metabolic dysfunction, are also being evaluated in the clinic. This article discusses recent progress with each of these strategies, with a focus on anti-amyloid strategies, highlighting the lessons learned and the challenges that remain.
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            Type 2 diabetes across generations: from pathophysiology to prevention and management.

            Christopher Nolan, Peter Damm, Marc Prentki (2011)
            Type 2 diabetes is now a pandemic and shows no signs of abatement. In this Seminar we review the pathophysiology of this disorder, with particular attention to epidemiology, genetics, epigenetics, and molecular cell biology. Evidence is emerging that a substantial part of diabetes susceptibility is acquired early in life, probably owing to fetal or neonatal programming via epigenetic phenomena. Maternal and early childhood health might, therefore, be crucial to the development of effective prevention strategies. Diabetes develops because of inadequate islet β-cell and adipose-tissue responses to chronic fuel excess, which results in so-called nutrient spillover, insulin resistance, and metabolic stress. The latter damages multiple organs. Insulin resistance, while forcing β cells to work harder, might also have an important defensive role against nutrient-related toxic effects in tissues such as the heart. Reversal of overnutrition, healing of the β cells, and lessening of adipose tissue defects should be treatment priorities. Copyright © 2011 Elsevier Ltd. All rights reserved.
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              Oxidative stress and Alzheimer disease.

              Yves Christen (2000)
              Research in the field of molecular biology has helped to provide a better understanding of both the cascade of biochemical events that occurs with Alzheimer disease (AD) and the heterogeneous nature of the disease. One hypothesis that accounts for both the heterogeneous nature of AD and the fact that aging is the most obvious risk factor is that free radicals are involved. The probability of this involvement is supported by the fact that neurons are extremely sensitive to attacks by destructive free radicals. Furthermore, lesions are present in the brains of AD patients that are typically associated with attacks by free radicals (eg, damage to DNA, protein oxidation, lipid peroxidation, and advanced glycosylation end products), and metals (eg, iron, copper, zinc, and aluminum) are present that have catalytic activity that produce free radicals. beta-Amyloid is aggregated and produces more free radicals in the presence of free radicals; beta-amyloid toxicity is eliminated by free radical scavengers. Apolipoprotein E is subject to attacks by free radicals, and apolipoprotein E peroxidation has been correlated with AD. In contrast, apolipoprotein E can act as a free radical scavenger and this behavior is isoform dependent. AD has been linked to mitochondrial anomalies affecting cytochrome-c oxidase, and these anomalies may contribute to the abnormal production of free radicals. Finally, many free radical scavengers (eg, vitamin E, selegeline, and Ginkgo biloba extract EGb 761) have produced promising results in relation to AD, as has desferrioxamine-an iron-chelating agent-and antiinflammatory drugs and estrogens, which also have an antioxidant effect.
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                Author and article information

                Journal
                Journal ID (nlm-ta): Oxid Med Cell Longev
                Journal ID (iso-abbrev): Oxid Med Cell Longev
                Journal ID (publisher-id): OXIMED
                Title: Oxidative Medicine and Cellular Longevity
                Publisher: Hindawi Publishing Corporation
                ISSN (Print): 1942-0900
                ISSN (Electronic): 1942-0994
                Publication date (Print): 2013
                Publication date (Electronic): 4 April 2013
                Volume: 2013
                Electronic Location Identifier: 575482
                Affiliations
                1Mailman School of Public Health, Columbia University, Allan Rosenfield Building, 722 West 168th Street, New York, NY 10032, USA
                2Department of Surgery, University of Connecticut Health Center, 263 Farmington Avenue, Farmington, CT 06030, USA
                Author notes
                *Denise McCormack: dmcfadden@ 123456uchc.edu

                Academic Editor: Nilanjana Maulik

                Article
                DOI: 10.1155/2013/575482
                PMC ID: 3649683
                PubMed ID: 23691264
                SO-VID: 40c12a75-80a7-4c41-81a3-a1e7dd560083
                Copyright © Copyright © 2013 D. McCormack and D. McFadden.
                License:

                This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                Date received : 13 February 2013
                Date accepted : 18 March 2013
                Categories
                Subject: Review Article

                ScienceOpen disciplines: Molecular medicine
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                ScienceOpen disciplines: Molecular medicine

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