Lung function changes in pleural asbestosis.

Pavao Petrović; Ljerka Ostojić; Irena Perić; Kornelija Mise; Zdenko Ostojić; Anteo Bradarić; Bozo Bota; Stipan Janković; Jadranka Tocilj

PubMed · 15666603

Lung function changes in pleural asbestosis.

Pavao Petrović·Ljerka Ostojić·Irena Perić·Kornelija Mise·Zdenko Ostojić·Anteo Bradarić·Bozo Bota·Stipan Janković·Jadranka Tocilj

View original source ↗Export metadata ↓

Abstract

The aim of this study was to examine the relationship between radiographically detectable pleural changes and lung function in pleural asbestosis. One hundred and twenty chrysotile asbestos-exposed workers were enrolled in this retrospective study. For each examinee the length of asbestos exposure and the degree of dust cover at the workplace were assessed as well as the radiological and functional tests has been performed. The examinees were divided into two groups based on radiologically detectable changes: a) group with pleural changes (29%) and b) group without perceived pleural changes (71%). The obtained results indicate association between the length of asbestos exposure, pleural changes and the impairment of lung function.

Explore related subjects

Asbestos, Serpentine Asbestosis Humans Occupational Exposure Pleural Diseases Respiratory Function Tests Retrospective Studies Workplace Journal Article

Keep this discovery

Explore connections, maps & timelines

BibTeX RIS

Pavao Petrović, Ljerka Ostojić, Irena Perić, Kornelija Mise, Zdenko Ostojić, Anteo Bradarić, Bozo Bota, Stipan Janković, Jadranka Tocilj. 2004. Lung function changes in pleural asbestosis.. https://pubmed.ncbi.nlm.nih.gov/15666603/

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related citations

PubMed2007

Collinsia sparsiflora in serpentine and nonserpentine habitats: using F2 hybrids to detect the potential role of selection in ecotypic differentiation.

Here we document phenotypic differences between serpentine and nonserpentine ecotypes of Collinsia sparsiflora, as well as patterns of selection in these contrasting soil habitats. We transplanted the two parental ecotypes and experimental F2 hybrids into six field sites, and collected morphological, phenological and fitness data on emergent plants. To focus on edaphically mediated selection, rather than on pollinator-mediated selection, we used pollinator-exclusion cages. Transplanted parentals of the two ecotypes showed genetic differentiation for floral traits, but not for phenological traits or cotyledon size. For the F2 hybrids growing on serpentine soils, there was significant directional selection on cotyledon size, flower size and flower shape. However, the pattern of selection did not differ significantly between serpentine and nonserpentine sites. Overall, we did not see evidence for divergent selection on the two soil types. We conclude that differences in floral traits between the ecotypes do not reflect adaptation to physical conditions associated with soil type, and that there are unmeasured traits that must be contributing to ecotypic differentiation.

Asbestos, Serpentine↗

PubMed2006

Interaction of bovine serum albumin with chrysotile: spectroscopic and morphological studies.

The biodurability of chrysotile fibers, which is related to their cytotoxicity and mutagenic responses, is strongly affected by the surface chemical adsorption of biological molecules. Natural chrysotile is a heterogeneous material in both structure and composition. The availability of synthetic stoichiometric chrysotile of constant structure and uniform morphology has allowed us to investigate its interaction with bovine serum albumin (BSA). By using transmission electron microscopy (TEM) and atomic force microscopy (AFM), we have obtained the first morphological evidence of albumin adsorption onto chrysotile nanocrystals. FTIR spectroscopy was used to quantify modifications of BSA secondary structure that were induced by the surface interaction. The protein transition to beta-turns allows a stronger interaction between the protein hydrophilic side-chains and the charged asbestos surface, which is consistent with hydrogen bonds involving the superficial OH groups. Synthetic stoichiometric chrysotile nanocrystals were shown to be an ideal reference standard with which to study the interaction of asbestos fibers with biological systems, in order to elucidate the chemical mechanisms of asbestos toxicity.

Asbestos, Serpentine↗

PubMed2006

A study of silicon carbide synthesis from waste serpentine.

There are 60000 tons of serpentine wastes produced in year 2004 in Taiwan. This is due to the well-developed joints in the serpentine ore body as well as the stringent requirements of the particle size and chemical composition of serpentine by iron making company. The waste also creates considerable environmental problems. The purpose of this study is reutilization of waste serpentine to produce a high value silica powder after acid leaching. These siliceous microstructure products obtained from serpentine would be responsible for high reactivity and characteristic molecular sieving effect. In this study, the amorphous silica powder was then synthesized to silicon carbide with the C/SiO(2) molar ratio of 3. The experiment results show that silicon carbide can be synthesized in 1550 degrees C. The formed silicon carbide was whisker beta type SiC which can be used as raw materials for industry.

Asbestos, Serpentine↗