105 results for “Reaction Department”, page 1 of 6
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Medical study · Medical research · 1997
Pericardial effusion associated with asbestos exposure
This was a case report of one 60-year-old man, from hospital departments in Brussels, Belgium, who developed fluid around the heart (pericardial effusion). The patient had been intensively exposed to asbestos for one year…
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Medical study · Medical research · 1997
Biological effects of contaminated silicon carbide particles from a workstation in a plant producing abrasives
…that the radiographic opacities found in two workers employed in the same area of the plant from which the dust tested was taken are due to a reaction by pulmonary interstitial structures to SiC particle inhalation…
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Medical study · Medical research · 1993
Assessing quality of life when planning and evaluating worker notification programs: two case examples
…fear of notification causing grave psychological problems, more subtle disruptions in quality of life may result. In addition, psychological reactions to notification, such as anxiety or denial, may impede or enhance workers' abilities to process, remember…
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Medical study · Medical research · 1993
Public health impact of the 1992 Los Angeles civil unrest
…an overview of the activities of the Public Health Programs and Services Branch of the Los Angeles County Department of Health Services during and after the civil unrest and to illustrate the types of public health…
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Medical study · Medical research · 1992
Cellular reaction on the intraperitoneal injection of four types of polylactide particulates
…peritoneal cavity of mice. The inflammatory reaction showed an increase in cell number (mainly neutrophilic granulocytes) up to 48 h after which the cell numbers decreased below the control (phosphate-buffered saline). All four polylactide particulates…
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Medical study · Medical research · 1990
Pulmonary reaction to long and short asbestos fibers is independent of fibroblast growth factor production by alveolar macrophages
This rat study asked whether alveolar macrophage secretions (scavenger cells in the lung's air spaces) explain why long, but not short, crocidolite fibers cause lung fibrosis. UICC crocidolite was separated into long fibers (mean 24.4 microns) and…
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Medical study · Medical research · 1991
Inflammation of the visceral pleura, a nonspecific asbestos-related pleural reaction: chest radiograph and computed tomograph correlation
…radiograph. The computed tomograph counterparts of these strands are seen as interlobular septal intrusions and lenticular or wedge-shaped subpleural opacities. The pleural reaction is nonspecific and may be found with asbestos exposure, traumatic hemorrhagic effusions…
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Medical study · Medical research · 1999
SV40 large T-antigen and human pleural mesothelioma. Screening by polymerase chain reaction and tyramine-amplified immunohistochemistry
…sequences. In this study, we screened 28 Belgian mesothelioma tumour samples for the presence of SV40 LTag-like DNA and its gene product by polymerase chain reaction amplification, using the SV.for3/SV.rev primer set…
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Medical study · Medical research · 1998
Reactive mesothelial hyperplasia vs mesothelioma, including mesothelioma in situ: a brief review
This article was a review of how to tell reactive mesothelial hyperplasia, a benign reaction of the lining cells, from epithelial mesothelioma in biopsy tissue, and of the idea of mesothelioma in situ. It summarized the…
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Medical study · Medical research · 1991
Cytotoxic effects of quartz and chrysotile asbestos: in vitro interspecies comparison with alveolar macrophages
…in vitro. The type of cell reaction toward the cytotoxic dusts was always the same: a loss of cell viability (trypan blue dye exclusion test) was accompanied by the release of cytoplasmic and lysosomal enzymes. The…
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Medical study · Medical research · 1999
Simian virus 40 is present in most United States human mesotheliomas, but it is rarely present in non-Hodgkin's lymphoma
…hamsters. In humans, SV40 has been detected in tumors of the first four types. Using the polymerase chain reaction (PCR), we tested 29 non-Hodgkin's lymphomas (intermediate and high-grade), 25 posttransplant lymphoproliferative disorders, and…
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Medical study · Medical research · 1994
Iron associated with asbestos bodies is responsible for the formation of single strand breaks in phi X174 RFI DNA
…iron was responsible. Amosite fibres (5000 fibres/reaction), with a similar length distribution to that of the asbestos bodies, did not catalyse detectable amounts of single strand breaks in DNA under identical reaction conditions. The results…
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Medical study · Medical research · 1992
Generation of hydroxyl radical by crocidolite asbestos is proportional to surface [Fe3+]
…in concentrations varying from 0 to 250 mM. Inclusion of deferoxamine in the reaction mixture provided similar results of diminishing both TBA reactive products and dihydroxybenzoic acid generation. We conclude that oxidant generation by crocidolite is…
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Medical study · Medical research · 1994
Highly specific spectrophotometric method for palladium(II) determination with 3-(5'-tetrazolylazo)-2,6-Diaminotoluene in the presence of chlorides. Kinetic and equilibrium study of reactions
…Equilibrium constants beta(nl) for reactions PdCl(2-)(4) + nH(3)L(2+) right harpoon over left harpoonright harpoon over left harpoon PdCl(4-n) (H(2)L)(2n-2)(n) + n Cl(-) + n H(+) were…
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Medical study · Medical research · 1993
Activation of UICC crocidolite: the effect of conversion of some ferric ions to ferrous ions
…The amount of iron in asbestos fibers, its oxidation state, and its availability to specific chelating agents determine their ability to catalyze the aforementioned reactions. In the present study, the activation of UICC crocidolite was achieved…
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Medical study · Medical research · 1996
Distinctive profile of alveolar macrophage-derived cytokine release induced by fibrogenic and nonfibrogenic mineral dusts
…BAL) for BAL cell populations and cytokine production in conjunction with histopathological assessment of lung tissue. Chrysotile B and short 4T30 chrysotile fibers induced chronic inflammatory reactions characterized by alveolar macrophage (AM) accumulation that resulted, respectively…
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Medical study · Medical research · 1992
Immunohistochemical study of 158 lung carcinomas
…carcinomas. The marker CEA stained only 33% of small cell and 60% of large cell carcinomas, and eight (26%) poorly differentiated squamous cell carcinomas showed no reaction. EMA stained about 90% of all four tumour groups…
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Medical study · Medical research · 1993
Bidirectional modulation of TNF-alpha production by alveolar macrophages in asbestos-induced pulmonary fibrosis
…alpha mRNA in AMs. These data indicate that lower levels of TNF-alpha resulted from inhibition at the gene expression level and provide evidence for bidirectional modulation of TNF-alpha production by AMs during inflammatory reactions.
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Medical study · Medical research · 1996
Simian virus 40 large T antigen (SV40LTAg) primer specific DNA amplification in human pleural mesothelioma tissue
…and three reactive pleurae, and amplified by the polymerase chain reaction (PCR) using the primer pairs used previously on fresh frozen tissues-namely, the SV primer set directed at the LTAg gene sequence unique to SV40…
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Medical study · Medical research · 1993
Radical oxidation reactions of the purine moiety of 2'-deoxyribonucleosides and DNA by iron-containing minerals
…was investigated by using a double experimental approach. One involved the electron spin resonance spin-trapping measurement of organic radicals obtained by the reaction of activated oxygen species, released upon incubation of the minerals in phosphate…