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Occupational Lung

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https://www.readbyqxmd.com/read/28095831/a-follow-up-study-of-airway-symptoms-and-lung-function-among-residents-and-workers-5-5%C3%A2-years-after-an-oil-tank-explosion
#1
Jens-Tore Granslo, Magne Bråtveit, Bjørg Eli Hollund, Stein Håkon Låstad Lygre, Cecilie Svanes, Bente Elisabeth Moen
BACKGROUND: Assess if people who lived or worked in an area polluted after an oil tank explosion had persistent respiratory health impairment as compared to a non-exposed population 5.5 years after the event. METHODS: A follow-up study 5.5 years after the explosion, 330 persons aged 18-67 years, compared lung function, lung function decline and airway symptoms among exposed persons (residents <6 km from the accident site or working in the industrial harbour at the time of the explosion) with a non-exposed group (residence >20 km away)...
January 17, 2017: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/28094581/early-immunopathological-events-in-acute-model-of-mycobacterial-hypersensitivity-pneumonitis-in-mice
#2
Elisabet Johansson, Gregory P Boivin, Jagjit S Yadav
Prolonged exposure to antigens of non-tuberculous mycobacteria species colonizing industrial metalworking fluid (MWF), particularly Mycobacterium immunogenum (MI), has been implicated in chronic forms of hypersensitivity pneumonitis (HP) in machinists based on epidemiology studies and long-term exposure of mouse models. However, a role of short-term acute exposure to these antigens has not been described in the context of acute forms of HP. This study investigated short-term acute exposure of mice to MI cell lysate (or live cell suspension) via oropharyngeal aspiration...
January 17, 2017: Journal of Immunotoxicology
https://www.readbyqxmd.com/read/28090784/effect-of-resveratrol-and-tetracycline-on-the-subacute-paraquat-toxicity-in-mice
#3
R M Satpute, P P Pawar, S Puttewar, S D Sawale, P D Ambhore
Paraquat (PQ) is a nonselective bipyridyl herbicide widely used in agriculture to control weeds, but its accidental, occupational, or intentional exposure in humans is known to cause pneumo- and neurotoxicity which may proves fatal. Oxidative stress is reported as an underlined mechanism of PQ-induced toxicity in alveolar cells, neurons, and astroglia. PQ generates superoxides both through electron transport reaction (ETC) with nicotinamide adenine dinucleotide-dependent oxidoreductase and by the redox cycling via reaction with molecular oxygen...
January 1, 2017: Human & Experimental Toxicology
https://www.readbyqxmd.com/read/28089118/occupational-lung-diseases-from-old-and-novel-exposures-to-effective-preventive-strategies
#4
REVIEW
Paul Cullinan, Xavier Muñoz, Hille Suojalehto, Raymond Agius, Surinder Jindal, Torben Sigsgaard, Anders Blomberg, Denis Charpin, Isabella Annesi-Maesano, Mridu Gulati, Yangho Kim, Arthur L Frank, Metin Akgün, David Fishwick, Rafael E de la Hoz, Subhabrata Moitra
Occupational exposure is an important, global cause of respiratory disease. Unlike many other non-communicable lung diseases, the proximal causes of many occupational lung diseases are well understood and they should be amenable to control with use of established and effective approaches. Therefore, the risks arising from exposure to silica and asbestos are well known, as are the means of their prevention. Although the incidence of occupational lung disease has decreased in many countries, in parts of the world undergoing rapid economic transition and population growth-often with large informal and unregulated workforces-occupational exposures continue to impose a heavy burden of disease...
January 6, 2017: Lancet Respiratory Medicine
https://www.readbyqxmd.com/read/28081474/the-future-excess-fraction-of-occupational-cancer-among-those-exposed-to-carcinogens-at-work-in-australia-in-2012
#5
Renee N Carey, Sally J Hutchings, Lesley Rushton, Timothy R Driscoll, Alison Reid, Deborah C Glass, Ellie Darcey, Si Si, Susan Peters, Geza Benke, Lin Fritschi
BACKGROUND: Studies in other countries have generally found approximately 4% of current cancers to be attributable to past occupational exposures. This study aimed to estimate the future burden of cancer resulting from current occupational exposures in Australia. METHODS: The future excess fraction method was used to estimate the future burden of occupational cancer (2012-2094) among the proportion of the Australian working population who were exposed to occupational carcinogens in 2012...
January 9, 2017: Cancer Epidemiology
https://www.readbyqxmd.com/read/28079614/the-role-of-gene-environment-interplay-in-occupational-and-environmental-diseases-current-concepts-and-knowledge-gaps
#6
Elizabeth Kwo, David Christiani
PURPOSE OF REVIEW: The interplay between genetic susceptibilities and environmental exposures in the pathogenesis of a variety of diseases is an area of increased scientific, epidemiologic, and social interest. Given the variation in methodologies used in the field, this review aims to create a framework to help understand occupational exposures as they currently exist and provide a foundation for future inquiries into the biological mechanisms of the gene-environment interactions. Understanding of this complex interplay will be important in the context of occupational health, given the public health concerns surrounding a variety of occupational exposures...
January 11, 2017: Current Opinion in Pulmonary Medicine
https://www.readbyqxmd.com/read/28071878/occupational-exposure-to-beryllium-final-rule
#7
(no author information available yet)
The Occupational Safety and Health Administration (OSHA) is amending its existing standards for occupational exposure to beryllium and beryllium compounds. OSHA has determined that employees exposed to beryllium at the previous permissible exposure limits face a significant risk of material impairment to their health. The evidence in the record for this rulemaking indicates that workers exposed to beryllium are at increased risk of developing chronic beryllium disease and lung cancer. This final rule establishes new permissible exposure limits of 0...
9, 2017: Federal Register
https://www.readbyqxmd.com/read/28069970/lung-cancer-risk-in-welders-and-foundry-workers-with-a-history-of-heavy-smoking-in-the-usa-the-national-lung-screening-trial
#8
Jason Y Y Wong, Bryan A Bassig, Wei Jie Seow, Wei Hu, Bu-Tian Ji, Aaron Blair, Debra T Silverman, Qing Lan
OBJECTIVES: Foundry work is a risk factor for lung cancer; however, the association with welding is unclear, as smoking is common among metalworkers and may mask the relationship. We evaluated whether history of welding and foundry work, independently and jointly, and employment duration were associated with lung cancer risk in heavy smokers. METHODS: We analysed data from the National Lung Screening Trial, a prospective randomised trial of 53 454 heavy smokers (>30 pack-years) in the USA...
January 9, 2017: Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/28069969/assessment-of-the-healthy-worker-survivor-effect-in-cancer-studies-of-the-united-autoworkers-general-motors-cohort
#9
Erika Garcia, Sally Picciotto, Sadie Costello, Patrick T Bradshaw, Ellen A Eisen
OBJECTIVE: The healthy worker survivor effect (HWSE) can affect the validity of occupational studies when data are analysed incorrectly. HWSE depends on three underlying conditions: (1) leaving work predicts future exposure, (2) leaving work is associated with disease outcome and (3) prior exposure increases probability of leaving work. If all these conditions are satisfied, then employment status is a time-varying confounder affected by prior exposure, and standard regression will produce bias...
January 9, 2017: Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/28062213/anti-fibrotic-effects-of-bone-morphogenetic-protein-7-modified-bone-marrow-mesenchymal-stem-cells-on-silica-induced-pulmonary-fibrosis
#10
Xiaoli Li, Guoliang An, Yan Wang, Di Liang, Zhonghui Zhu, Ximeng Lian, Piye Niu, Caixia Guo, Lin Tian
Silicosis is an occupational lung disease caused by exposure to small particles of crystalline silica, which ultimately results in diffuse pulmonary fibrosis. Evidence indicates an anti-fibrotic role of bone morphogenetic protein-7 (BMP-7) and bone marrow mesenchymal stem cells (BMSCs) in lung diseases. Therefore, strategies incorporating genetic engineering and stem cell biology might have a tremendous potential to treat critical injuries and diseases. Therefore, we modified BMSCs to overexpress the BMP-7 gene (BMP-7-BMSCs) by lentivirus transduction, and then evaluated whether fibrotic processes were inhibited by these cells in vivo...
January 4, 2017: Experimental and Molecular Pathology
https://www.readbyqxmd.com/read/28054515/method-validation-of-nanoparticle-tracking-analysis-to-measure-pulmonary-nanoparticle-content-the-size-distribution-in-exhaled-breath-condensate-depends-on-occupational-exposure
#11
Jean-Jacques Sauvain, Guillaume Suarez, Jean-Louis Edmé, Olivia Maria de Paula Alvez Bezerra, Keller Silveira, Lenio Amaral, Ana Paula Carneiro, Natalie Cherot-Kornobis, Annie Sobaszek, Sébastien Hulo
A particle exposure assessment based on the dose deposited in the lungs would be the gold standard for the evaluation of any resulting health effects. Measuring particles in exhaled breath condensate (EBC)-a matrix containing water and airway lining fluid-could help to evaluate particle retention in the lungs. This study aimed to (1) validate a nanoparticle tracking analysis (NTA) method for determining the particle number concentration and their hydrodynamic size distribution in EBC, and (2) apply this method to EBC collected from workers exposed to soapstone (n = 55) or quartz dust (n = 12) and controls (n = 11)...
January 5, 2017: Journal of Breath Research
https://www.readbyqxmd.com/read/28051194/respiratory-symptoms-and-lung-function-among-greek-cotton-industry-workers-a-cross-sectional-study
#12
Ioannis D Anyfantis, Georgios Rachiotis, Cristos Hadjichristodoulou, Konstantinos I Gourgoulianis
BACKGROUND: Workers in cotton industry are occupationally exposed to various dust-related hazards. The nature of these agents and the respective exposure levels depend on the cotton industry specific sector. These exposures could be associated with respiratory symptoms and changes in lung function parameters. OBJECTIVE: To evaluate associations between occupational exposure and respiratory function as well as reported symptoms in several groups of workers at different stages of the cotton industry in a vertical approach that covers all the major sectors-from cotton ginning to weaving and fabric production...
January 2017: International Journal of Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/28046358/su-f-t-653-radiation-exposure-from-cs-131-permanent-seed-implants
#13
T Giaddui, M Hardin, D To, E Kremmel, C Peng, P Hann, S Richardson, Y Yu, A Harrison, L Doyle
PURPOSE: Permanent seed implants have traditionally been used to treat prostate, lung and head or neck cancers using I-125 and Pd-103. Cs-131, which has higher dose rate is being used to treat brain, head and/or neck cancers in our clinic, therefore, we chose to monitor the dose received by surgeons during the extensive procedure. The aims of this work are to assess the level of radiation exposure to surgeons and the instantaneous exposure at bedside and 1 m from patients. METHODS: Ten patients received Cs-131 implants for recurrent brain,head and/or neck cancer; the median implanted activity, number of implanted seeds and prescription dose at 0...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28043270/-the-effect-of-occupational-exposure-to-coal-tar-pitch-workers-health
#14
X C Sun, F Zhang, W Zhang, C D Lu, Z H Zhang, B Feng, H Y Wei, X Meng, X L Chen, H Shao, Z X Wang
Objective: To investigate the effect of occupational exposure to coal tar pitch on workers' health and metabolism. Methods: 805 workers exposed to coal tar pitch were selected as exposure group from the produce and em-ploy factory. Other people handle administrative and logistical affairs who not exposed to coal tar pitch were selected as control group. Fix-point sample of air were collected to detect the concentration of coal tar pitch. Do physical examination and questionnaire to collect workers' basic and healthy information...
November 20, 2016: Chinese Journal of Industrial Hygiene and Occupational Diseases
https://www.readbyqxmd.com/read/28018840/hand-impairment-in-systemic-sclerosis-various-manifestations-and-currently-available-treatment
#15
Amber Young, Rajaie Namas, Carole Dodge, Dinesh Khanna
Systemic sclerosis (SSc) is an autoimmune disease initially recognized by hand involvement due to characteristic Raynaud's phenomenon (RP), puffy hands, skin thickening, and contractures resembling claw deformities. SSc contributes to hand impairment through inflammatory arthritis, joint contractures, tendon friction rubs (TFRs), RP, digital ulcers (DU), puffy hands, skin sclerosis, acro-osteolysis, and calcinosis. These manifestations, which often co-exist, can contribute to difficulty with occupational activities and activities of daily living (ADL), which can result in impaired quality of life...
September 2016: Current Treatment Options in Rheumatology
https://www.readbyqxmd.com/read/28018477/differential-activation-of-raw-264-7-macrophages-by-size-segregated-crystalline-silica
#16
Steven E Mischler, Emanuele G Cauda, Michelangelo Di Giuseppe, Linda J McWilliams, Claudette St Croix, Ming Sun, Jonathan Franks, Luis A Ortiz
BACKGROUND: Occupational exposure to crystalline silica is a well-established occupational hazard. Once in the lung, crystalline silica particles can result in the activation of alveolar macrophages (AM), potentially leading to silicosis, a fibrotic lung disease. Because the activation of alveolar macrophages is the beginning step in a complicated inflammatory cascade, it is necessary to define the particle characteristics resulting in this activation. The aim of this research was to determine the effect of the size of crystalline silica particles on the activation of macrophages...
2016: Journal of Occupational Medicine and Toxicology
https://www.readbyqxmd.com/read/28005910/melioidosis-in-malaysia-a-review-of-case-reports
#17
Paul Vijay Kingsley, Mark Leader, Nandika Suranjith Nagodawithana, Meghan Tipre, Nalini Sathiakumar
BACKGROUND: Melioidosis is a tropical infectious disease associated with significant mortality due to early onset of sepsis. OBJECTIVE: We sought to review case reports of melioidosis from Malaysia. METHODS: We conducted a computerized search of literature resources including PubMed, OVID, Scopus, MEDLINE and the COCHRANE database to identify published case reports from 1975 to 2015. We abstracted information on clinical characteristics, exposure history, comorbid conditions, management and outcome...
December 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28002541/distinction-between-mesothelioma-and-lung-adenocarcinoma-based-on-immunohistochemistry-in-a-patient-with-asbestos-bodies-in-bronchoalveolar-fluid-case-report
#18
Agripina Raşcu, Eugenia Naghi, Marina Ruxandra OŢelea, Floarea Mimi NiŢu, Oana Cristina Arghir
Asbestos is a mineral-mined form the rocks, consisting in amosite (brown asbestos), crocidolite (blue asbestos) and÷or chrysotile (white asbestos) used in many industries. Researches about the exposure to asbestos dust and asbestosis related diseases started almost a century ago. The first case report of fatal asbestosis disease was published in 1906, in England, by Dr. Hubert Montague Murray. A decade after, asbestos "curious bodies" were firstly described in the lung tissue by Cooke (1926) and McDonald (1927)...
2016: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/27999217/a-survey-on-lifestyle-and-level-of-biomarkers-of-environmental-exposure-in-residents-in-civitavecchia-italy
#19
Carla Ancona, Lisa Bauleo, Giovanni Biscotti, Beatrice Bocca, Stefano Caimi, Fabio Cruciani, Sabrina Di Lorenzo, Morena Petrolati, Anna Pino, Giovanna Piras, Augusto Pizzabiocca, Silvia Rabbiosi, Flavia Ruggieri, Chelo Salatino, Alessandro Alimonti, Francesco Forastiere
BACKGROUND: The assessment of individual exposure to toxicants in industrially contaminated areas is difficult when multiple productions are active close to residential areas. Two thermoelectric power plants and a large harbor have been operating since the '60s in the area of Civitavecchia (North of Rome). METHODS: The ABC (Ambiente e Biomonitoraggio nell'area di Civitavecchia, Environment and Biomonitoring in Civitavecchia) program involved, in the period 2013-2014, residents in Civitavecchia and in the nearby municipalities (Santa Marinella, Allumiere, Tolfa and Tarquinia)...
October 2016: Annali Dell'Istituto Superiore di Sanità
https://www.readbyqxmd.com/read/27997619/intranasal-chromium-induces-acute-brain-and-lung-injuries-in-rats-assessment-of-different-potential-hazardous-effects-of-environmental-and-occupational-exposure-to-chromium-and-introduction-of-a-novel-pharmacological-and-toxicological-animal-model
#20
Abeer Salama, Rehab Hegazy, Azza Hassan
Chromium (Cr) is used in many industries and it is widely distributed in the environment. Exposure to Cr dust has been reported among workers at these industries. Beside its hazardous effects on the lungs, brain injury could be induced, as the absorption of substances through the nasal membrane has been found to provide them a direct delivery to the brain. We investigated the distribution and the effects of Cr in both brain and lung following the intranasal instillation of potassium dichromate (inPDC) in rats...
2016: PloS One
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