نتایج جستجو برای: asbestos
تعداد نتایج: 6150 فیلتر نتایج به سال:
Asbestos fibers are carcinogens causing oxidative stress and inflammation, but the sources and ramifications of oxidant production by asbestos are poorly understood. Here, we show that inhaled chrysotile asbestos fibers cause increased myeloperoxidase activity in bronchoalveolar lavage fluids (BALF) and myeloperoxidase immunoreactivity in epithelial cells lining distal bronchioles and alveolar ...
Asbestos-related diseases, such as malignancies and asbestosis, remain a significant occupational and public health concern. Asbestos is still widely used in many developing countries despite being a recognized carcinogen that has been banned over 50 countries. The prevalence and mortality from asbestos-related diseases continue to pose challenges worldwide. Many countries are now experiencing ...
There are millions of workers whose exposure to asbestos dust prior to the implementation of asbestos regulation and improved control measures places them at risk of asbestos-related disease today. In addition, workers are still being exposed to signi®cant amounts of asbestos, when asbestos materials in place are disturbed during renovation, repair, or demolition. Given the continued presence o...
BackgroundIndonesia is one of the world's largest asbestos importing countries. While main contributor to work-related lung cancer, studies or reports regarding CT findings asbestos-related cancer have been limited in country. The objective this study was compare size tumor and pleural parenchymal changes between patients exposed asbestosis those not exposed. MethodsThis cross-sectional involve...
Environmental and occupational inhalants may induce a large number of pulmonary diseases, with asbestos exposure being the most risky. The mechanisms are clearly related to chemical composition and physical and surface properties of materials. A combination of X-ray fluorescence (μXRF) and Fourier Transform InfraRed (μFTIR) microscopy was used to chemically characterize and compare asbestos bod...
April 1–7 Is National Asbestos Awareness Week In March 2012 the U.S. Senate for the second year in a row approved Resolution 389, declaring the first week of April to be National Asbestos Awareness Week. Sponsored by Max Baucus (D–MT), the goal of the measure is to increase public awareness of the prevalence of asbestos-related diseases and the dangers of asbestos exposure. The National Toxicol...
BACKGROUND All forms of asbestos are now banned in 52 countries. Safer products have replaced many materials that once were made with it. Nonetheless, many countries still use, import, and export asbestos and asbestos-containing products, and in those that have banned other forms of asbestos, the so-called "controlled use" of chrysotile asbestos is often exempted from the ban. In fact, chrysoti...
Internalization of Libby amphibole asbestos and induction of oxidative stress in murine macrophages.
The community members of Libby, MT, have experienced significant asbestos exposure and developed numerous asbestos-related diseases including fibrosis and lung cancer due to an asbestos-contaminated vermiculite mine near the community. The form of asbestos in the contaminated vermiculite has been characterized in the amphibole family of fibers. However, the pathogenic effects of these fibers ha...
Asbestos is a generic term for a group of six naturally-occurring, fibrous silicate minerals that have been widely used in commercial products. These minerals are more commonly found in nonfibrous forms that are not asbestos. Asbestos minerals fall into two groups or classes, serpentine asbestos and amphibole asbestos. Chrysotile, a serpentine asbestos, possesses relatively long and flexible cr...
Given the interest in defining biomarkers of asbestos exposure and to provide insights into asbestos-related and cell-specific mechanisms of neoplasia, the identification of gene alterations in asbestos-related cancers can help to a better understanding of exposure risk. To understand the aetiology of asbestos-induced malignancies and to increase our knowledge of mesothelial carcinogenesis, we ...
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