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Title of Journal: Eur J Appl Physiol

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Abbravation: European Journal of Applied Physiology

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Springer-Verlag

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DOI

10.1002/pol.1979.170171104

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1439-6327

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Influence of exercise on the circulating levels an

Authors: L MartinCordero J J Garcia E Giraldo M De la Fuente R Manso E Ortega
Publish Date: 2009/08/18
Volume: 107, Issue: 5, Pages: 535-
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Abstract

Regular physical activity is recognized as a nonpharmacological treatment of genetic obesity and typeII diabetes and based on the “antiinflammatory” effects of exercise it has been also proposed for improving the “chronic lowgrade inflammation” in metabolic syndrome MS The aim of the present work was to evaluate the effects of an habitual exercise program running 5 days/week for 35 min at 35 cm/s for 14 weeks and of a bout of acute exercise running for 35 min at 35 cm/s on MSassociated disorders in the proinflammatory cytokines IL1β and IFNγ The study was carried out on obese Zucker rats fa/fa The obese rats presented higher circulating concentrations and constitutive macrophage production in the absence of antigenic stimulus of IL1β but not of IFNγ But their production of both IL1β and IFNγ by lipopolysaccharide LPSstimulated macrophages was lower than that of the control lean rats Our protocol of exercise training did not modify the circulating concentration and constitutive macrophage release of either IL1β or IFNγ in the obese rats but increased the production of both cytokines by LPSstimulated macrophages The single bout of acute exercise only increased the release of IL1β by the LPSstimulated macrophages from obese rats in both sedentary and trained animals The results indicated that 1 circulating levels and constitutive production of IL1β by macrophages are deregulated in rats with MS and 2 IL1β and IFNγ production by macrophages in response to antigenic stimulus LPS is impaired in the obese animals and this MSassociated disorder is improved by the program of habitual exercise trainingThis work was partially supported by grants DEP200656187C0403 Ministry of Science and Innovation GRU08039 Junta de Extremadura and Fundación Valhondo de Extremadura Spain The experiment was approved by the Ethical Committees of the Autonoma University Madrid Spain and of the University of Extremadura Badajoz Spain according to the guidelines of the European Community Council Directives and the Declaration of Helsinki

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