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Coping With Mesothelioma Diagnosis And Finding Hope With Clinical Trials
Here is an excerpt: “Plasma malondialdehyde (MDA) (an indicator of lipid peroxidation) was determined in random samples of workers (age range 25-60 years) exposed to silica dust (n = 31, mean exposure duration 21.3 +/- 8.3 years) or asbestos dust (n = 59, mean exposure duration 15.6 +/- 4.5 years) and in 52 age-matched healthy male controls. MDA levels of both exposed groups were significantly higher than that of the controls and were significantly higher among workers exposed to asbestos than among those exposed to silica dusts. Neither age nor smoking was related to MDA levels among both controls and exposed workers; among the latter group MDA was not significantly correlated with duration of exposure. Mean MDA levels of exposed workers with radiographic signs of lung fibrosis or pleural thickening and of those without such signs were not significantly different, except in the case of asbestos-exposed workers where it was significantly less than that of those without such signs. Differences between mean durations of dust exposure of workers with radiographic signs of lung fibrosis and those without such signs were statistically insignificant. The results suggest the possible involvement of lipid peroxidation on exposure to silica or asbestos dusts in humans and possible development of antioxidant mechanism(s) on prolonged dust exposure and support the opinion that development of pneumoconiosis depends on susceptibility factor(s).” A second study worth looking at is called, “Surface charge and asbestos toxicity” by W. G. LIGHT & E. T. WEI - Nature 265, 537 - 539 (10 February 1977); doi:10.1038/265537a0 - Department of Biomedical and Environmental Health Sciences, School of Public Health, University of California, Berkeley, California 94720. Here is an excerpt: “Asbestos is a serious occupational and environmental hazard because of its fibrogenic and carcinogenic actions on the lung. Asbestos fibres exist in various physical forms, all of which are toxic. It is not known, however, which form is the most hazardous or which fibre property is the most important for inducing the toxic effects. It is thus important to examine relationships between the structure of the fibres and their biological activity. We have investigated the relationship between the surface charge and the haemolytic activity (ability to rupture the erythrocyte membrane) of asbestos. We report here that different forms of asbestos can be activated or inactivated by surface charge alterations.” If you found either of these excerpts interesting, please read the studies in their entirety and urge others to do so as well. Article Directory: http://www.articledashboard.com Thor Anderson is the author of this article on Navy Asbestos Claims. Find more information about Navy Asbestos Exposure here. |
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