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[PMID]:28412454
[Au] Autor:Gualtieri AF; Bursi Gandolfi N; Pollastri S; Burghammer M; Tibaldi E; Belpoggi F; Pollok K; Langenhorst F; Vigliaturo R; Drazic G
[Ad] Endereço:Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia, Via Campi 103, I-41125 Modena, Italy. Electronic address: alessandro.gualtieri@unimore.it.
[Ti] Título:New insights into the toxicity of mineral fibres: A combined in situ synchrotron µ-XRD and HR-TEM study of chrysotile, crocidolite, and erionite fibres found in the tissues of Sprague-Dawley rats.
[So] Source:Toxicol Lett;274:20-30, 2017 May 15.
[Is] ISSN:1879-3169
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Along the line of the recent research topic aimed at understanding the in vivo activity of mineral fibres and their mechanisms of toxicity, this work describes the morpho-chemical characteristics of the mineral fibres found in the tissues of Sprague-Dawley rats subjected to intraperitoneal/intrapleural injection of UICC chrysotile, UICC crocidolite and erionite-Na from Nevada (USA). The fibres are studied with in situ synchrotron powder diffraction and high resolution transmission electron microscopy to improve our understanding of the mechanisms of toxicity of these mineral fibres. In contact with the tissues of the rats, chrysotile fibres are prone to dissolve, with leaching of Mg and production of a silica rich relict. On the other hand, crocidolite and erionite-Na fibres are stable even for very long contact times within the tissues of the rats, showing just a thin dissolution amorphous halo. These findings support the model of a lower biopersistence of chrysotile with respect to crocidolite and erionite-Na but the formation of a silica-rich fibrous residue after the pseudo-amorphization of chrysotile may justify a higher cytotoxic potential and intense inflammatory activity of chrysotile in the short term in contact with the lung tissues.
[Mh] Termos MeSH primário: Asbestos
Microscopia Eletrônica de Transmissão/métodos
Fibras Minerais/toxicidade
Difração de Raios X/métodos
Zeolitas
[Mh] Termos MeSH secundário: Animais
Feminino
Masculino
Ratos
Ratos Sprague-Dawley
Distribuição Tecidual
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Mineral Fibers); 12510-42-8 (erionite); 1318-02-1 (Zeolites); 1332-21-4 (Asbestos)
[Em] Mês de entrada:1706
[Cu] Atualização por classe:170628
[Lr] Data última revisão:
170628
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170417
[St] Status:MEDLINE


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[PMID]:28276807
[Au] Autor:Di Ciaula A
[Ad] Endereço:a Division of Internal Medicine , Hospital of Bisceglie , Bisceglie (BAT) , Italy.
[Ti] Título:Asbestos ingestion and gastrointestinal cancer: a possible underestimated hazard.
[So] Source:Expert Rev Gastroenterol Hepatol;11(5):419-425, 2017 May.
[Is] ISSN:1747-4132
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:INTRODUCTION: The presence of asbestos fibres (AFs) in drinking water could be linked with gastrointestinal cancers. However, it is not regulated in several countries due to conflicting evidence. Areas covered: Some reports mainly associated AF ingestion with gastric and colorectal cancer. Experimental evidence suggested a role for timing and extent of exposure, and showed that ingested AFs induce toxic effects on the stomach, ileum and colon, histological alterations and negative effects at a molecular level, cross the placenta and enter foetal organs (including the liver), and seem able to act as a co-carcinogen agent. Occupational studies suggest associations between asbestos exposure and intrahepatic cholangiocarcinoma, and observations exist indicating the possibility that AFs could enter the liver and bile through enteric absorption. Expert commentary: A risk threshold (AF concentration in drinking water) for digestive cancers has not been convincingly identified so far and regulations, where adopted, have weak scientific basis and may not be adequate. With further and more definitive studies, evidence might become sufficient to justify monitoring plans, persuade countries with no current limits to set a maximum level of AFs in drinking water and might induce a revision of the existing legislations, pointing to efficient primary prevention policies.
[Mh] Termos MeSH primário: Asbestos/efeitos adversos
Exposição Ambiental/efeitos adversos
Neoplasias Gastrointestinais/etiologia
Exposição Ocupacional/efeitos adversos
Poluentes Químicos da Água/efeitos adversos
[Mh] Termos MeSH secundário: Animais
Neoplasias Gastrointestinais/diagnóstico
Seres Humanos
Fibras Minerais/efeitos adversos
Medição de Risco
Fatores de Risco
Fatores de Tempo
[Pt] Tipo de publicação:JOURNAL ARTICLE; REVIEW
[Nm] Nome de substância:
0 (Mineral Fibers); 0 (Water Pollutants, Chemical); 1332-21-4 (Asbestos)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171023
[Lr] Data última revisão:
171023
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170310
[St] Status:MEDLINE
[do] DOI:10.1080/17474124.2017.1300528


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[PMID]:28253224
[Au] Autor:Mazurek JM; Syamlal G; Wood JM; Hendricks SA; Weston A
[Ti] Título:Malignant Mesothelioma Mortality - United States, 1999-2015.
[So] Source:MMWR Morb Mortal Wkly Rep;66(8):214-218, 2017 Mar 03.
[Is] ISSN:1545-861X
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Malignant mesothelioma is a neoplasm associated with occupational and environmental inhalation exposure to asbestos* fibers and other elongate mineral particles (EMPs) (1-3). Patients have a median survival of approximately 1 year from the time of diagnosis (1). The latency period from first causative exposure to malignant mesothelioma development typically ranges from 20 to 40 years but can be as long as 71 years (2,3). Hazardous occupational exposures to asbestos fibers and other EMPs have occurred in a variety of industrial operations, including mining and milling, manufacturing, shipbuilding and repair, and construction (3). Current exposures to commercial asbestos in the United States occur predominantly during maintenance operations and remediation of older buildings containing asbestos (3,4). To update information on malignant mesothelioma mortality (5), CDC analyzed annual multiple cause-of-death records for 1999-2015, the most recent years for which complete data are available. During 1999-2015, a total of 45,221 deaths with malignant mesothelioma mentioned on the death certificate as the underlying or contributing cause of death were reported in the United States, increasing from 2,479 deaths in 1999 to 2,597 in 2015 (in the same time period the age-adjusted death rates decreased from 13.96 per million in 1999 to 10.93 in 2015). Malignant mesothelioma deaths increased for persons aged ≥85 years, both sexes, persons of white, black, and Asian or Pacific Islander race, and all ethnic groups. Despite regulatory actions and the decline in use of asbestos the annual number of malignant mesothelioma deaths remains substantial. The continuing occurrence of malignant mesothelioma deaths underscores the need for maintaining measures to prevent exposure to asbestos fibers and other causative EMPs and for ongoing surveillance to monitor temporal trends.
[Mh] Termos MeSH primário: Neoplasias Pulmonares/mortalidade
Mesotelioma/mortalidade
[Mh] Termos MeSH secundário: Adulto
Idoso
Idoso de 80 Anos ou mais
Asbestos/toxicidade
Causas de Morte
Feminino
Seres Humanos
Exposição por Inalação/efeitos adversos
Neoplasias Pulmonares/etiologia
Masculino
Mesotelioma/etiologia
Meia-Idade
Fibras Minerais/efeitos adversos
Doenças Profissionais/etiologia
Doenças Profissionais/mortalidade
Exposição Ocupacional/efeitos adversos
Estados Unidos/epidemiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Mineral Fibers); 1332-21-4 (Asbestos)
[Em] Mês de entrada:1703
[Cu] Atualização por classe:170317
[Lr] Data última revisão:
170317
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170303
[St] Status:MEDLINE
[do] DOI:10.15585/mmwr.mm6608a3


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[PMID]:27821674
[Au] Autor:Merler E; Somigliana A; Girardi P; Barbieri PG
[Ad] Endereço:Venetian Mesothelioma Registry, Occupational Health Unit, Local Health Authority of Padua, Padua, Italy.
[Ti] Título:Residual fibre lung burden among patients with pleural mesothelioma who have been occupationally exposed to asbestos.
[So] Source:Occup Environ Med;74(3):218-227, 2017 Mar.
[Is] ISSN:1470-7926
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:OBJECTIVES: To evaluate the lungs asbestos fibres concentration in participants with malignant pleural mesothelioma (MPM) who have been occupationally exposed. METHODS: The lung samples were obtained from pleuropneumonectomies or autopsies of 271 male MPMs. The lung samples were examined through scanning electron microscopy. Retrospective assessment was used to assess for asbestos exposure. This study includes 248 MPMs with an occupational exposure defined as either 'definite' or 'probable' or 'possible'. RESULTS: The participants had finished working in asbestos exposure conditions more than 20 years ago (on average 26.1±11.0 years). The fibre burden resulted with a geometric mean equal to 2.0 (95% CI 1.6 to 2.4) million fibres per gram of dry lung tissue. The burden was higher among participants employed in asbestos textiles industry and in shipyards with insulation material, if compared with construction workers or non-asbestos textile workers or participants working in chemicals or as auto mechanics. 91.3% of MPMs had a detectable amount of amphibole fibres. A strong lung clearance capability was evident among workers exposed to chrysotile fibres. Owing to that, the 1997 Helsinki Criteria for occupational exposure were reached in <35% of cases among participant working in construction, in metallurgical industry, in chemical or textile industry and among those performing brake repair activities. CONCLUSIONS: The MPM cases are now occurring in Italy in participants who ceased occupational asbestos exposure decades before the analysis. A large majority still shows a residual content of amphibole fibres, but given the lung clearance capability, attribution to occupational exposure cannot rely only on fibres detection.
[Mh] Termos MeSH primário: Asbestos/efeitos adversos
Asbestos/isolamento & purificação
Neoplasias Pulmonares/patologia
Pulmão/patologia
Mesotelioma/patologia
Doenças Profissionais/patologia
Exposição Ocupacional/efeitos adversos
[Mh] Termos MeSH secundário: Idoso
Idoso de 80 Anos ou mais
Feminino
Seres Humanos
Entrevistas como Assunto
Itália
Neoplasias Pulmonares/induzido quimicamente
Masculino
Mesotelioma/induzido quimicamente
Meia-Idade
Fibras Minerais
Doenças Profissionais/induzido quimicamente
Exposição Ocupacional/análise
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Mineral Fibers); 1332-21-4 (Asbestos)
[Em] Mês de entrada:1706
[Cu] Atualização por classe:170616
[Lr] Data última revisão:
170616
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161109
[St] Status:MEDLINE
[do] DOI:10.1136/oemed-2015-103382


  5 / 811 MEDLINE  
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[PMID]:27619065
[Au] Autor:Pollastri S; Gualtieri AF; Vigliaturo R; Ignatyev K; Strafella E; Pugnaloni A; Croce A
[Ad] Endereço:Department of Chemical and Geological Sciences, The University of Modena and Reggio Emilia, Via Campi 103, I-41125, Modena, Italy. Electronic address: simone.pollastri@unimore.it.
[Ti] Título:Stability of mineral fibres in contact with human cell cultures. An in situ µXANES, µXRD and XRF iron mapping study.
[So] Source:Chemosphere;164:547-557, 2016 Dec.
[Is] ISSN:1879-1298
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Relevant mineral fibres of social and economic importance (chrysotile UICC, crocidolite UICC and a fibrous erionite from Jersey, Nevada, USA) were put in contact with cultured diploid human non-tumorigenic bronchial epithelial (Beas2B) and pleural transformed mesothelial (MeT5A) cells to test their cytotoxicity. Slides of each sample at different contact times up to 96 h were studied in situ using synchrotron XRF, µ-XRD and µ-XAS (I18 beamline, Diamond Light Source, UK) and TEM investigations. XRF maps of samples treated for 96 h evidenced that iron is still present within the chrysotile and crocidolite fibres and retained at the surface of the erionite fibres, indicating its null to minor mobilization in contact with cell media; this picture was confirmed by the results of XANES pre-edge analyses. µ-XRD and TEM data indicate greater morphological and crystallinity modifications occurring in chrysotile, whereas crocidolite and erionite show to be resistant in the biological environment. The contact of chrysotile with the cell cultures seems to lead to earlier amorphization, interpreted as the first dissolution step of these fibres. The formation of such silica-rich fibre skeleton may prompt the production of HO in synergy with surface iron species and could indicate that chrysotile may be much more reactive and cytotoxic in vitro in the (very) short term whereas the activity of crocidolite and erionite would be much more sluggish but persistent in the long term.
[Mh] Termos MeSH primário: Asbesto Crocidolita/química
Asbestos Serpentinas/química
Ferro/análise
Fibras Minerais/análise
Zeolitas/química
[Mh] Termos MeSH secundário: Animais
Asbesto Crocidolita/toxicidade
Asbestos Serpentinas/toxicidade
Brônquios/efeitos dos fármacos
Carcinogênese/induzido quimicamente
Linhagem Celular
Seres Humanos
Ferro/toxicidade
Fibras Minerais/toxicidade
Mucosa Respiratória/efeitos dos fármacos
Zeolitas/toxicidade
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Asbestos, Serpentine); 0 (Mineral Fibers); 12001-28-4 (Asbestos, Crocidolite); 12510-42-8 (erionite); 1318-02-1 (Zeolites); E1UOL152H7 (Iron)
[Em] Mês de entrada:1703
[Cu] Atualização por classe:170817
[Lr] Data última revisão:
170817
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160914
[St] Status:MEDLINE


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[PMID]:27289526
[Au] Autor:Bloise A; Barca D; Gualtieri AF; Pollastri S; Belluso E
[Ad] Endereço:Department of Biology, Ecology and Earth Sciences, University of Calabria, 87036, Arcavacata di Rende, CS, Italy. Electronic address: andrea.bloise@unical.it.
[Ti] Título:Trace elements in hazardous mineral fibres.
[So] Source:Environ Pollut;216:314-23, 2016 Sep.
[Is] ISSN:1873-6424
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Both occupational and environmental exposure to asbestos-mineral fibres can be associated with lung diseases. The pathogenic effects are related to the dimension, biopersistence and chemical composition of the fibres. In addition to the major mineral elements, mineral fibres contain trace elements and their content may play a role in fibre toxicity. To shed light on the role of trace elements in asbestos carcinogenesis, knowledge on their concentration in asbestos-mineral fibres is mandatory. It is possible that trace elements play a synergetic factor in the pathogenesis of diseases caused by the inhalation of mineral fibres. In this paper, the concentration levels of trace elements from three chrysotile samples, four amphibole asbestos samples (UICC amosite, UICC anthophyllite, UICC crocidolite and tremolite) and fibrous erionite from Jersey, Nevada (USA) were determined using inductively coupled plasma mass spectrometry (ICP-MS). For all samples, the following trace elements were measured: Li, Be, Sc, V, Cr, Mn, Co, Ni, Cu, Zn, As, Rb, Sr, Y, Sb, Cs, Ba, La, Pb, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Th, U. Their distribution in the various mineral species is thoroughly discussed. The obtained results indicate that the amount of trace metals such as Mn, Cr, Co, Ni, Cu and Zn is higher in anthophyllite and chrysotile samples, whereas the amount of rare earth elements (REE) is higher in erionite and tremolite samples. The results of this work can be useful to the pathologists and biochemists who use asbestos minerals and fibrous erionite in-vitro studies as positive cyto- and geno-toxic standard references.
[Mh] Termos MeSH primário: Metais Pesados/análise
Metais Terras Raras/análise
Fibras Minerais/toxicidade
[Mh] Termos MeSH secundário: Asbestos/química
Amiantos Anfibólicos/química
Metais Pesados/química
Metais Terras Raras/química
Nevada
Zeolitas/química
[Pt] Tipo de publicação:COMPARATIVE STUDY; JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Asbestos, Amphibole); 0 (Metals, Heavy); 0 (Metals, Rare Earth); 0 (Mineral Fibers); 12510-42-8 (erionite); 1318-02-1 (Zeolites); 1332-21-4 (Asbestos); 14567-73-8 (tremolite); 61029-21-8 (anthophyllite)
[Em] Mês de entrada:1701
[Cu] Atualização por classe:170118
[Lr] Data última revisão:
170118
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160613
[St] Status:MEDLINE


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[PMID]:27145298
[Au] Autor:Hwang SH; Park WM
[Ad] Endereço:a National Cancer Control Institute, National Cancer Center , Goyang-si Gyeonggi-do , South Korea.
[Ti] Título:Evaluation of asbestos-containing products and released fibers in home appliances.
[So] Source:J Air Waste Manag Assoc;66(9):922-9, 2016 Sep.
[Is] ISSN:2162-2906
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:UNLABELLED: The purpose of this study was to detect asbestos-containing products and released asbestos fibers from home appliances. The authors investigated a total of 414 appliances manufactured between 1986 and 2007. Appliances were divided into three categories: large-sized electric appliances, small-sized electric appliances, and household items. Analysis for asbestos-containing material (ACM) was performed using polarized light microscopy (PLM) and stereoscopic microscopy. Air sampling was performed to measure airborne concentration of asbestos using a phase-contrast microscope (PCM). The results of the analysis for ACM in appliances show that large-sized electric appliances (refrigerators, washing machines, kimchi-refrigerators) and household items (bicycles, motorcycles, gas boilers) contain asbestos material and small-sized electric appliances do not contain asbestos material. All appliances with detected asbestos material showed typical characteristics of chrysotile (7-50%) and tremolite (7-10%). No released fibers of ACM were detected from the tested appliances when the appliances were operating. This study gives the basic information on asbestos risk to people who use home appliances. IMPLICATIONS: All appliances with detected asbestos material showed typical characteristics of chrysotile (7-50%) and tremolite (7-10%). No released fibers of ACM were detected from the tested appliances when the appliances were operating.
[Mh] Termos MeSH primário: Poluentes Atmosféricos/análise
Poluição do Ar em Ambientes Fechados/análise
Amiantos Anfibólicos/análise
Asbestos Serpentinas/análise
Monitoramento Ambiental/métodos
Utensílios Domésticos
Fibras Minerais/análise
[Pt] Tipo de publicação:EVALUATION STUDIES; JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Air Pollutants); 0 (Asbestos, Amphibole); 0 (Asbestos, Serpentine); 0 (Mineral Fibers); 14567-73-8 (tremolite)
[Em] Mês de entrada:1707
[Cu] Atualização por classe:170719
[Lr] Data última revisão:
170719
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160505
[St] Status:MEDLINE
[do] DOI:10.1080/10962247.2016.1180329


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[PMID]:27021059
[Au] Autor:Suzuki T; Sakakibara Y; Hisanaga N; Sakai K; Yu IJ; Lim HS; Mikamo H; Seno H; Kobayashi F; Shibata E
[Ad] Endereço:Department of Health and Psychosocial Medicine, Aichi Medical University School of Medicine, Japan.
[Ti] Título:The association among ferruginous body, uncoated fibers, asbestos and non-asbestos fibers in lung tissue in terms of length.
[So] Source:Ind Health;54(4):370-6, 2016 Aug 05.
[Is] ISSN:1880-8026
[Cp] País de publicação:Japan
[La] Idioma:eng
[Ab] Resumo:To demonstrate the correlations between the concentrations of ferruginous body as well as uncoated fiber both of which can be observed with phase-contrast microscope and the concentration of various inorganic fibers including asbestos which requires the observation with TEM or SEM, we measured those indices among Japanese and Korean cases. Though the concentration of ferruginous body in lung tissue is an important index of asbestos exposure, uncoated fibers observed with phase-contrast microscope might be another index especially in such cases with relatively low exposure due to their history of living in a general environment. However, to establish the reliability of uncoated fibers as an index of asbestos exposure, analysis with more cases and from various backgrounds must be carried out.
[Mh] Termos MeSH primário: Asbestos/análise
Pulmão/química
Fibras Minerais/análise
[Mh] Termos MeSH secundário: Adolescente
Adulto
Idoso
Exposição Ambiental
Feminino
Seres Humanos
Japão
Pulmão/ultraestrutura
Masculino
Microscopia Eletrônica de Transmissão
Microscopia de Contraste de Fase
Meia-Idade
República da Coreia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Mineral Fibers); 1332-21-4 (Asbestos)
[Em] Mês de entrada:1706
[Cu] Atualização por classe:170626
[Lr] Data última revisão:
170626
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160330
[St] Status:MEDLINE
[do] DOI:10.2486/indhealth.2015-0159


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[PMID]:26715106
[Au] Autor:Gilham C; Rake C; Burdett G; Nicholson AG; Davison L; Franchini A; Carpenter J; Hodgson J; Darnton A; Peto J
[Ad] Endereço:London School of Hygiene and Tropical Medicine, London, UK.
[Ti] Título:Pleural mesothelioma and lung cancer risks in relation to occupational history and asbestos lung burden.
[So] Source:Occup Environ Med;73(5):290-9, 2016 May.
[Is] ISSN:1470-7926
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: We have conducted a population-based study of pleural mesothelioma patients with occupational histories and measured asbestos lung burdens in occupationally exposed workers and in the general population. The relationship between lung burden and risk, particularly at environmental exposure levels, will enable future mesothelioma rates in people born after 1965 who never installed asbestos to be predicted from their asbestos lung burdens. METHODS: Following personal interview asbestos fibres longer than 5 µm were counted by transmission electron microscopy in lung samples obtained from 133 patients with mesothelioma and 262 patients with lung cancer. ORs for mesothelioma were converted to lifetime risks. RESULTS: Lifetime mesothelioma risk is approximately 0.02% per 1000 amphibole fibres per gram of dry lung tissue over a more than 100-fold range, from 1 to 4 in the most heavily exposed building workers to less than 1 in 500 in most of the population. The asbestos fibres counted were amosite (75%), crocidolite (18%), other amphiboles (5%) and chrysotile (2%). CONCLUSIONS: The approximate linearity of the dose-response together with lung burden measurements in younger people will provide reasonably reliable predictions of future mesothelioma rates in those born since 1965 whose risks cannot yet be seen in national rates. Burdens in those born more recently will indicate the continuing occupational and environmental hazards under current asbestos control regulations. Our results confirm the major contribution of amosite to UK mesothelioma incidence and the substantial contribution of non-occupational exposure, particularly in women.
[Mh] Termos MeSH primário: Amiantos Anfibólicos/efeitos adversos
Neoplasias Pulmonares/induzido quimicamente
Pulmão
Mesotelioma/induzido quimicamente
Doenças Profissionais/induzido quimicamente
Exposição Ocupacional/efeitos adversos
Neoplasias Pleurais/induzido quimicamente
[Mh] Termos MeSH secundário: Adulto
Idoso
Amianto Amosita/efeitos adversos
Amianto Amosita/análise
Amiantos Anfibólicos/análise
Asbesto Crocidolita/efeitos adversos
Asbesto Crocidolita/análise
Asbestos Serpentinas/efeitos adversos
Asbestos Serpentinas/análise
Asbestose/complicações
Emprego
Feminino
Seres Humanos
Pulmão/química
Pulmão/patologia
Neoplasias Pulmonares/patologia
Masculino
Mesotelioma/patologia
Meia-Idade
Fibras Minerais/efeitos adversos
Fibras Minerais/análise
Doenças Profissionais/patologia
Neoplasias Pleurais/patologia
Medição de Risco
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Asbestos, Amphibole); 0 (Asbestos, Serpentine); 0 (Mineral Fibers); 12001-28-4 (Asbestos, Crocidolite); 12172-73-5 (Asbestos, Amosite)
[Em] Mês de entrada:1608
[Cu] Atualização por classe:170922
[Lr] Data última revisão:
170922
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:151231
[St] Status:MEDLINE
[do] DOI:10.1136/oemed-2015-103074


  10 / 811 MEDLINE  
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[PMID]:26583905
[Au] Autor:Prasauskas T; Matulevicius J; Kliucininkas L; Krugly E; Valincius V; Martuzevicius D
[Ad] Endereço:a Department of Environmental Technology , Kaunas University of Technology , Kaunas , Lithuania.
[Ti] Título:Filter media properties of mineral fibres produced by plasma spray.
[So] Source:Environ Technol;37(11):1315-24, 2016.
[Is] ISSN:0959-3330
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The purpose of this study was to determine the properties of fibrous gas filtration media produced from mineral zeolite. Fibres were generated by direct current plasma spray. The paper characterizes morphology, chemical composition, geometrical structure of elementary fibres, and thermal resistance, as well as the filtration properties of fibre media. The diameter of the produced elementary fibres ranged from 0.17 to 0.90 µm and the length ranged from 0.025 to 5.1 mm. The release of fibres from the media in the air stream was noticed, but it was minimized by hot-pressing the formed fibre mats. The fibres kept their properties up to the temperature of 956°C, while further increase in temperature resulted in the filter media becoming shrunk and brittle. The filtration efficiency of the prepared filter mats ranged from 95.34% to 99.99% for aerosol particles ranging in a size between 0.03 and 10.0 µm. Unprocessed fibre media showed the highest filtration efficiency when filtering aerosol particles smaller than 0.1 µm. Hot-pressed filters were characterized by the highest quality factor values, ranging from 0.021 to 0.064 Pa(-1) (average value 0.034 Pa(-1)).
[Mh] Termos MeSH primário: Aerossóis/isolamento & purificação
Poluentes Atmosféricos/isolamento & purificação
Filtração/métodos
Fibras Minerais/análise
Zeolitas/química
[Mh] Termos MeSH secundário: Aerossóis/química
Poluentes Atmosféricos/química
Tamanho da Partícula
Temperatura Ambiente
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Aerosols); 0 (Air Pollutants); 0 (Mineral Fibers); 1318-02-1 (Zeolites)
[Em] Mês de entrada:1612
[Cu] Atualização por classe:161230
[Lr] Data última revisão:
161230
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:151120
[St] Status:MEDLINE
[do] DOI:10.1080/09593330.2015.1114028



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