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Blueberry Extract Reduces Oxidative Stress in Patients with Metabolic Syndrome

Journal of Life Sciences 2016年第3期10卷 145-152页

作者： Raul Francisco Pastor Gonzalez E Cassini M. S. Pastor I Saure M Saavedra E. Siman Menem M. I. Drago S Iermoli R. H internalmedicineivchair HospitaldeClinicas"JosddeSanMartin"UniversityofBuenosAiresBuenosAiresArgentina CentrodeDiagn6sticoMolecularS.A.(MolecularDiagnosisCenter) BuenosAiresArgentina CESAN(CentrodeEndocrinologia SaludAlimentaci6nyNutricidn)CenterforEndocrinologyHealthEatingandNutritionBuenosAiresArgentina

Oxidative stress is a health condition that could potentially harm the patient, and it is defined as the lack of balance between the production of oxygen free radicals, which rises, and antioxidant defenses, which are in decrease. Metabolic syndrome implies a variety of risk factors that are based on abdominal obesity and insulin resistance. Moreover, the importance of metabolic syndrome is emphasized due to the fact that it presents an increase in oxidative stress, which is produced by the sum of alterations that each risk factor produces within the metabolic syndrome pathology. Reducing oxidative stress in these patients is currently one of the most interesting challenges of cardiovascular and metabolic therapeutics, because it is a molecular biology alteration that is not generally diagnosed and, therefore, not treated. The increasing incidence of overweight and obesity cause an increase in the incidence of metabolic syndrome, thus turning into a huge problem that keeps growing at alarming proportions. This syndrome＇s incidence oscillates between 20 and 40%, depending on the gender, age, ethnic group, and diagnostic criteria used for the definition of the disease. Prospective studies show that metabolic syndrome doubles the risk of cardiovascular disease and causes a five-fold increase in the risk of developing type 2 diabetes. With the aim of decreasing the oxidative stress caused by metabolic syndrome, we investigated the effect of antioxidant protection in DNA repair and cell membranes through the use of blueberry extract, which is the fruit with the highest antioxidant capacity, in patients with metabolic syndrome. Thirty patients were studied for a period of 6 months of intervention, and it could be demonstrated that they showed a highly significant decrease in the damage produced to the DNA, which was measured by the urinary excretion of 8-hydroxy-2＇-deoxyguanosine （8-OHdG） and the damage caused to the vascular endothelium and cell membranes, which was meas

关键词： Metabolic syndrome urinary biomarkers of oxidative stress blueberries antioxidants.

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