Asbestos, particle, and air bubble counting generally supports qualitative asbestos analysis, using such procedures as dispersion staining. Operators conventionally check and count asbestos fibers visually using a microscope – a difficult, time-consuming process. The microscopic observation robot we are automating to support qualitative asbestos analysis images fibers and saves them automatical...

The pathogenesis of asbestos-related lung diseases is complicated and still poorly understood. Studies on animal models and cell cultures have indicated that asbestos fibres generate reactive oxygen and nitrogen species and cause oxidation and/or nitrosylation of proteins and deoxyribonucleic acid as a marker of cell injury. These effects are potentiated by the inflammation caused by the fibres...

In Poland, the use of asbestos was banned in 1997 and asbestos plants have been closed since then. Despite their closure, cases of asbestos-related occupational diseases among former asbestos workers are still being recorded in the Central Register of Occupational Diseases. Between 2001 and 2014, there were 2726 asbestos-related illnesses, classified and reported as diseases associated with occ...

Many asbestiform minerals exhibit temperature-dependent thermoluminescence. Since thermoluminescence involves electronic transitions within crystalline materials, the effect of temperature on asbestos cytotoxicity was evaluated. Heat pretreatment of Canadian chrysotile asbestos reduces its cytotoxicity towards cultured human fibroblasts and bovine alveolar macrophages. When monitored 44 hr afte...

Asbestos is an important occupational and environmental toxicant that affects several cell types in the respiratory tract. In an effort to understand how asbestos causes cell injury and/or altered proliferation and differentiation of cells, this laboratory has focused on reactive oxygen species as mediators of asbestos-induced biological effects. A compendium of experimental results reported by...

An Italian appeal court has increased the sentence of two leading asbestos industrialists from sixteen to eighteen years in prison for criminal conduct in covering up the hazards of asbestos. Yet, unbelievably, at the May 2013 meeting of the UN Rotterdam Convention, Russia perpetuated the same deadly deception in order to export asbestos, while covering up its hazards. What is shocking is that ...

This study provided data that can be used to discriminate asbestiform and non-asbestiform amphiboles contained in landscaping rocks recreational parks. The length width of fibers being at least 5 μm long with a minimum aspect ratio 3:1 were measured using transmission electron microscope compared an asbestos reference sample. park samples thicker than 1 (average 1.9 μm), while the Health Safe...

BACKGROUND Malignant mesothelioma is a rare pleural tumour associated with asbestos exposure. The proportion of malignant mesothelioma unrelated to asbestos exposure, and any differentiating features between exposed and unexposed cases, are not well described. This study describes occupational, clinical, and pathological features in a large cohort of cases of malignant mesothelioma from south e...

UNLABELLED To elucidate the features of the asbestos fibers contributing to the induction of human malignant mesothelioma, we used high-resolution analytical electron microscopy to determine the type, number, and dimensions of asbestos fibers in lung and mesothelial tissues in 168 cases of mesothelioma. RESULTS 1. Asbestos fibers were present in almost all of the lung and mesothelial tissues ...

In an update by Checkoway et al. (1) of mortality among diatomaceous earth workers, asbestos exposure misclassification and asbestos-silica interactions may have influenced study results and interpretation. In a reanalysis (2) of the original cohort mortality study to examine confounding by asbestos exposure, workers employed before 1930 were excluded because asbestos was definitely used in the...