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dc.contributor.authorMedjdoub, A-
dc.contributor.authorMerzouk, S.A-
dc.contributor.authorMerzouk, H-
dc.contributor.authorChiali, F.Z-
dc.contributor.authorNarce, M-
dc.date.accessioned2014-07-16T11:23:04Z-
dc.date.available2014-07-16T11:23:04Z-
dc.date.issued2011-06-06-
dc.identifier.urihttp://dspace.univ-tlemcen.dz/handle/112/5702-
dc.description.abstractPesticides have been shown to possess marked immunotropic activity. The aim of this work was to study the in vitro effects of different concentrations (1–100 lM) of Mancozeb (fungicide) and Metribuzin (herbicide),on the proliferative responses of human and rat spleen lymphocytes stimulated by concanavalin A (ConA, mitogen), the Th1- (IL-2, INFc) and Th2- (IL-4) cytokine secretion and on the intracellular oxidative status. The results showed that Mancozeb significantly reduced ConA lymphocyte proliferation in a dose-dependent manner in both humans and rats. It also decreased IL-2, INFc and IL-4 secretion with a a shift away to Th1 phenotype. Metribuzin at low concentrations (1–10 lM) resulted in activation of ConA stimulated lymphocyte proliferation and cytokine production in both human and rat spleen cells. However, at high concentrations (25–100 lM), Metribuzin induced a dose-dependent inhibition of lymphocyte proliferation and cytokines. Changes in intracellular levels of reduced Glutathione, hydroperoxides and carbonyl proteins and in the activities of catalase and SOD were observed after Mancozeb and Metribuzin exposure reflecting oxidative stress and DNA damage specially at high concentrations. In conclusion, Mancozeb and Metribuzin had significant immunomodulatory properties with oxidative stress induction at high concentrationsen_US
dc.language.isoenen_US
dc.subjectMancozeben_US
dc.subjectMetribuzinen_US
dc.subjectRat splenocytesen_US
dc.subjectHuman lymphocytesen_US
dc.subjectCytokinesen_US
dc.subjectOxidative stressen_US
dc.titleEffects of Mancozeb and Metribuzin on in vitro proliferative responses and oxidative stress of human and rat spleen lymphocytes stimulated by mitogensen_US
dc.typeArticleen_US
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