PURPOSE: Obesity may be a state of chronic oxidative stress. Oxidative stress may be the mechanism underlying the development of co-morbidities in obesity. This review provides a summary of the available evidence regarding systemic oxidative stress in young, older and clinical obese populations. METHODS: Medline was searched for all available articles published between 1975 and 2006 that evaluated oxidative stress biomarkers in resting conditions or following various interventions in overweight and obese humans. RESULTS: Obesity elevates oxidative stress in young, old and clinical populations as shown by elevations in lipid peroxidation (malondialdehyde, hydroperoxides, 4-hydroxynonenal, isoprostanes, conjugated dienes) or protein oxidation (8-hydroxy-deoxyguanosine). Lipid peroxidation is associated with several indices of adiposity and a low systemic antioxidant defence (i.e. antioxidant enzymes, tissue dietary antioxidants, glutathione). Oxidative stress may be exacerbated with acute exercise, advancing age or co-existing clinical conditions and may be corrected by improving antioxidant defences through fat volume reduction via surgery, pharmacological agents, exercise and/or dietary modification. CONCLUSION: Oxidative stress is related to chronic disease in obesity, but is reversible with one or more interventions described above.
PURPOSE:Obesity may be a state of chronic oxidative stress. Oxidative stress may be the mechanism underlying the development of co-morbidities in obesity. This review provides a summary of the available evidence regarding systemic oxidative stress in young, older and clinical obese populations. METHODS: Medline was searched for all available articles published between 1975 and 2006 that evaluated oxidative stress biomarkers in resting conditions or following various interventions in overweight and obesehumans. RESULTS:Obesity elevates oxidative stress in young, old and clinical populations as shown by elevations in lipid peroxidation (malondialdehyde, hydroperoxides, 4-hydroxynonenal, isoprostanes, conjugated dienes) or protein oxidation (8-hydroxy-deoxyguanosine). Lipid peroxidation is associated with several indices of adiposity and a low systemic antioxidant defence (i.e. antioxidant enzymes, tissue dietary antioxidants, glutathione). Oxidative stress may be exacerbated with acute exercise, advancing age or co-existing clinical conditions and may be corrected by improving antioxidant defences through fat volume reduction via surgery, pharmacological agents, exercise and/or dietary modification. CONCLUSION: Oxidative stress is related to chronic disease in obesity, but is reversible with one or more interventions described above.
Authors: Marta Torres; Ricardo Laguna-Barraza; Mireia Dalmases; Alexandra Calle; Eva Pericuesta; Josep M Montserrat; Daniel Navajas; Alfonso Gutierrez-Adan; Ramon Farré Journal: Sleep Date: 2014-11-01 Impact factor: 5.849
Authors: Christa M Studzinski; Feng Li; Annadora J Bruce-Keller; Sun Ok Fernandez-Kim; Le Zhang; Adam M Weidner; William R Markesbery; M Paul Murphy; Jeffrey N Keller Journal: J Neurochem Date: 2008-11-27 Impact factor: 5.372