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Pulmonary exposure to diesel exhaust particles (DEP) has been associated with high levels of oxidized DNA in lung cells, whereas long-term oral DEP exposure appears to induce the DNA repair system with concomitant unaltered levels of oxidized DNA in the colon and liver of rats. Here we studied the generation of oxidatively damaged DNA in young wild type (WT) and oxoguanine DNA glycosylase 1 (OGG1)...
Recent research suggests that high-altitude hypoxia may serve as a model for prolonged oxidative stress in healthy humans. In this study, we investigated the consequences of prolonged high-altitude hypoxia on the basal level of oxidative damage to nuclear DNA in muscle cells, a major oxygen-consuming tissue. Muscle biopsies from seven healthy humans were obtained at sea level and after 2 and 8 weeks...
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