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Occupational asthma

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https://www.readbyqxmd.com/read/28810682/effects-of-known-determinants-on-methylene-bisphenyl-isocyanate-mdi-concentration-during-spray-on-truck-bed-lining-processes
#1
Nicholas C Schaal, William J Brazile, Katie L Finnie, James P Tiger
Background: Occupational exposure to methylene bisphenyl isocyanate (MDI) presents serious worker health concerns as it may lead to short- and long-term health effects such as asthma, airway irritation, hypersensitivity pneumonitis, and irritation of skin and mucous membranes. While studies of worker isocyanate exposures during vehicle painting activities are widespread, few studies have investigated the spray-on truck bed-liner (STBL) industry. The purpose of this study was to determine the effectiveness of several ventilation system variables and process characteristics in controlling MDI concentrations in the STBL industry...
August 1, 2017: Annals of Work Exposures and Health
https://www.readbyqxmd.com/read/28804700/abridged-version-of-the-awmf-guideline-for-the-medical-clinical-diagnostics-of-indoor-mould-exposure-s2k-guideline-of-the-german-society-of-hygiene-environmental-medicine-and-preventive-medicine-ghup-in-collaboration-with-the-german-association-of-allergists
#2
Gerhard A Wiesmüller, Birger Heinzow, Ute Aurbach, Karl-Christian Bergmann, Albrecht Bufe, Walter Buzina, Oliver A Cornely, Steffen Engelhart, Guido Fischer, Thomas Gabrio, Werner Heinz, Caroline E W Herr, Jörg Kleine-Tebbe, Ludger Klimek, Martin Köberle, Herbert Lichtnecker, Thomas Lob-Corzilius, Rolf Merget, Norbert Mülleneisen, Dennis Nowak, Uta Rabe, Monika Raulf, Hans Peter Seidl, Jens-Oliver Steiß, Regine Szewszyk, Peter Thomas, Kerttu Valtanen, Julia Hurraß
This article is an abridged version of the AWMF mould guideline "Medical clinical diagnostics of indoor mould exposure" presented in April 2016 by the German Society of Hygiene, Environmental Medicine and Preventive Medicine (Gesellschaft für Hygiene, Umweltmedizin und Präventivmedizin, GHUP), in collaboration with the above-mentioned scientific medical societies, German and Austrian societies, medical associations and experts. Indoor mould growth is a potential health risk, even if a quantitative and/or causal relationship between the occurrence of individual mould species and health problems has yet to be established...
2017: Allergo Journal International
https://www.readbyqxmd.com/read/28795953/diagnostic-accuracy-of-breath-tests-for-pneumoconiosis-using-an-electronic-nose
#3
Pau-Chung Chen, Hsin-Yi Peng, Che-Jui Chang, Hsiao-Yu Yang
Breath analyses have attracted substantial attention as screens for occupational environmental lung disease. The objective of this study was to develop breath tests for pneumoconiosis by analysing volatile organic compounds using an electronic nose. A case-control study was designed. We screened 102 subjects from a cohort of stone workers. After excluding three subjects with poorly controlled diabetes mellitus and one subject with asthma, 98 subjects were enrolled, including 34 subjects with pneumoconiosis and 64 healthy controls...
August 10, 2017: Journal of Breath Research
https://www.readbyqxmd.com/read/28795430/occupational-contact-urticaria-and-protein-contact-dermatitis-causes-and-concomitant-airway-diseases
#4
Eva Helaskoski, Hille Suojalehto, Outi Kuuliala, Kristiina Aalto-Korte
BACKGROUND: Contact urticaria (CU) and protein contact dermatitis (PCD) are mainly induced by an immediate, IgE-mediated immunological mechanism. Immediate sensitization is also linked to asthma and/or allergic rhinitis. OBJECTIVES: To report causes of work-induced CU and PCD, and to evaluate the occurrence of concomitant airway diseases. METHODS: We retrospectively reviewed the patient files of cases diagnosed with CU or PCD at the Finnish Institute of Occupational Health during 1995-2011...
August 10, 2017: Contact Dermatitis
https://www.readbyqxmd.com/read/28789768/-work-related-asthma-in-an-orthopaedic-surgeon
#5
Eske Roth, Christina Blanner Kristiansen, Karin Dahl Assing, Ulla Møller Weinreich
An orthopaedic surgeon with no history of lung disease developed cough and dyspnoea. The patient was diagnosed with asthma by spirometry and bronchial provocation test with methacholine. A clear correlation between symptoms and work was established meriting a referral to a centre for occupational health. The patient was diagnosed with work-related disease, which was recognized by the industrial injury board. The cause was methyl methacrylate, a known airway irritant, which is an important component of bone cement...
July 24, 2017: Ugeskrift for Laeger
https://www.readbyqxmd.com/read/28771844/assessment-of-eosinophilic-airway-inflammation-as-a-contribution-to-the-diagnosis-of-occupational-asthma
#6
Carolina Beretta, Catherine Rifflart, Geneviève Evrard, Jacques Jamart, Joël Thimpont, Olivier Vandenplas
BACKGROUND: Ascertaining the presence of asthma through the assessment of nonspecific bronchial hyperresponsiveness (NSBH) is a key step in the diagnosis of occupational asthma (OA). We aimed at investigating whether indices of airway inflammation including fractional exhaled nitric oxide (FeNO) and sputum eosinophils would be useful adjuncts to the measurement of NSBH in diagnosing OA defined as a positive specific inhalation challenge (SIC). METHODS: The study included 240 consecutive subjects with a suspicion of OA who completed a SIC, of whom 133 showed a positive response...
August 3, 2017: Allergy
https://www.readbyqxmd.com/read/28737932/ins-and-outs-in-environmental-and-occupational-safety-studies-of-asthma-and-engineered-nanomaterials
#7
Marina A Dobrovolskaia, Michael R Shurin, Valerian E Kagan, Anna A Shvedova
According to the Centers for Disease Control and Prevention, approximately 25 million Americans suffer from asthma. The disease total annual cost is about $56 billion and includes both the direct and indirect costs of medications, hospital stays, missed work, and decreased productivity. Air pollution with xenobiotics, bacterial agents, and industrial nanomaterials, such as carbon nanotubes, contribute to the exacerbation of this condition and are a point of particular attention in environmental toxicology as well as in occupational health and safety research...
July 24, 2017: ACS Nano
https://www.readbyqxmd.com/read/28734852/azodicarbonamide-adca-a-reconsideration-of-classification-as-a-respiratory-sensitiser
#8
Josje Arts, Ian Kimber
Azodicarbonamide (ADCA) is widely used by industry in the manufacture of a variety of products. ADCA has been classified as a respiratory allergen, and the purpose of this article was to consider whether this classification is appropriate based upon the available data. Here both clinical experience and relevant experimental data have been reviewed. Although there have been reports of an association between workplace exposure to ADCA and symptoms of respiratory allergy and occupational asthma, the evidence is less than persuasive, with in many instances a lack of properly controlled and executed diagnostic procedures...
July 20, 2017: Regulatory Toxicology and Pharmacology: RTP
https://www.readbyqxmd.com/read/28696639/-occupational-asthma
#9
Grazia Krüll, Pietro Gianella, Paola M Soccal, Jacques André Pralong
Occupational asthma is the most common occupational respiratory disease. It mainly affects young workers with significant socio-economic consequences. Early recognition improves its prognosis. A rigorous investigative approach while the worker is still exposed at work and appropriate medical care require a multi-disciplinary collaboration. Prevention is the key element in the management of professional asthma.
November 16, 2016: Revue Médicale Suisse
https://www.readbyqxmd.com/read/28694695/relationship-between-blood-eosinophils-clinical-characteristics-and-mortality-in-patients-with-copd
#10
Maeva Zysman, Gaëtan Deslee, Denis Caillaud, Pascal Chanez, Roger Escamilla, Isabelle Court-Fortune, Pascale Nesme-Meyer, Thierry Perez, Jean-Louis Paillasseur, Christophe Pinet, Gilles Jebrak, Nicolas Roche, Pierre-Régis Burgel
In patients with COPD, there is controversy regarding the association of blood eosinophil (Eos) levels with 1) exacerbation frequency and 2) the effect of inhaled corticosteroids for prevention of exacerbations. To determine whether Eos define subgroups of patients exhibiting attributes of COPD clinical phenotypes, we compared clinical features and mortality rates in COPD patients from the Initiatives BPCO French cohort categorized using different thresholds of blood Eos levels. The following data were collected at inclusion: medical and smoking history, occupational exposures, dyspnea, cough and sputum production, exacerbations in the previous year, history of allergy and asthma, nasal symptoms, body mass index, St George Respiratory Questionnaire (SGRQ) total score, post-bronchodilator spirometry, comorbidities, and medications...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28692003/comparison-of-psychological-quality-of-life-work-limitation-and-socioeconomic-status-between-patients-with-occupational-asthma-and-work-exacerbated-asthma
#11
Joshua C Lipszyc, Frances Silverman, Dorothy Linn Holness, Gary M Liss, Kim L Lavoie, Susan M Tarlo
OBJECTIVE: The aim of this study was to compare psychological status, quality of life (QoL), work limitation, and socioeconomic status between patients with occupational asthma (OA) and work-exacerbated asthma (WEA). METHODS: The following questionnaires were administered to participants: Beck anxiety and depression (II) inventories, Marks' Asthma Quality of Life Questionnaire, and Work Limitations Questionnaire. Cross-sectional analyses between OA and WEA subgroups were completed...
July 2017: Journal of Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/28681396/association-of-atopy-and-tentative-diagnosis-of-skin-cancer-results-from-occupational-skin-cancer-screenings
#12
I Schäfer, P Mohr, N Zander, R Fölster-Holst, M Augustin
BACKGROUND: The relationship between atopic conditions and carcinoma of the skin has been described inconsistently. Population-based data providing information on atopic diseases as well as on skin-cancer are sparse. OBJECTIVE: To determine the correlation between atopy and prevalence of precanceroses, nonmelanoma skin-cancer and malignant melanoma (MM), while taking into account known risk factors for skin cancer. METHODS: Data from occupational skin cancer screenings were analysed in a cross-sectional study...
July 6, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28675438/biological-monitoring-of-dermal-and-air-exposure-to-cobalt-at-a-swedish-hard-metal-production-plant-does-dermal-exposure-contribute-to-uptake
#13
Maria Klasson, Magnus Lindberg, Ing-Liss Bryngelsson, Helena Arvidsson, Carin Pettersson, Bente Husby, Håkan Westberg
BACKGROUND: Occupational exposure to cobalt is well established in hard metal manufacture. Cobalt is known to cause contact allergy, asthma, hard metal lung disease, and lung cancer. The relationship between skin exposure and uptake determined in blood has not been extensively investigated. OBJECTIVE: To examine whether skin and inhalable air exposure to cobalt contributes to uptake, determined as cobalt in blood, in a hard metal manufacturing factory. METHODS: The amount of cobalt on the skin found with an acid wash technique, the air concentrations of inhalable cobalt and cobalt blood concentrations were determined and correlated in exposed workers...
July 4, 2017: Contact Dermatitis
https://www.readbyqxmd.com/read/28669330/the-quality-of-life-and-professional-future-among-tunisian-workers-suffering-from-occupational-asthma
#14
Mohamed Adnene Henchi, Amira Omrane, Charfeddine Amri, Lamia Bouzgarrou, Ines Rassas, Awatef Mahfoudh, Taoufik Khalfallah, Mohamed Akrout
OBJECTIVE: To identify the factors influencing the quality of life and professional future of patients suffering from occupational asthma. METHOD: A cross-sectional study of patients compensated for occupational asthma in Tunisian center, between 2004-2011. The study of quality of life was based on the Asthma Quality of Life Questionnaires (AQLQ). Some related patents were also discussed. RESULTS: One hundred twenty-nine patients were compensated and the mean age was 40...
June 30, 2017: Recent Patents on Inflammation & Allergy Drug Discovery
https://www.readbyqxmd.com/read/28652722/pulmonary-rehabilitation-in-copd-available-resources-and-utilization-in-swedish-primary-and-secondary-care
#15
Josefin Sundh, Helena Lindgren, Mikael Hasselgren, Scott Montgomery, Christer Janson, Björn Ställberg, Karin Lisspers
INTRODUCTION: Pulmonary rehabilitation is effective in all stages of COPD. The availability and utilization of pulmonary rehabilitation resources, and the characteristics of COPD patients receiving rehabilitation, were investigated in primary and secondary care in central Sweden. MATERIALS AND METHODS: Data on available pulmonary rehabilitation resources were collected using questionnaires, to 14 hospitals and 54 primary health care centers, and information on utilization of different rehabilitation professionals was obtained from questionnaires completed by 1,329 COPD patients from the same centers...
2017: International Journal of Chronic Obstructive Pulmonary Disease
https://www.readbyqxmd.com/read/28649872/indoor-swimming-pool-environments-and-self-reported-irritative-and-respiratory-symptoms-among-lifeguards
#16
Gabrielle Bureau, Benoît Lévesque, Marjolaine Dubé, Denis Gauvin, François Lépine, Denis Laliberté
A web survey was conducted among 870 lifeguards (current and former) to assess the relationship between exposure to indoor swimming pool environments and respiratory health. Associations between respiratory symptoms and asthma with varying lengths of occupational exposure were assessed by multiple logistic regression. Lifeguards exposed more than 500 hours in the previous 12 months experienced more cough (adjustedOR = 2.54, IC95 % = 1.51-4.25), throat (aOR = 2.47, IC95 % = 1.44-4.24) and eye irritation (aOR = 4...
June 25, 2017: International Journal of Environmental Health Research
https://www.readbyqxmd.com/read/28638572/hypersensitivity-pneumonitis-an-overlooked-cause-of-cough-and-dyspnea
#17
Ryan S D'souza, Anthony Donato
Hypersensitivity pneumonitis (HP) is an immune-mediated pulmonary disorder involving inflammation of the lung interstitium, terminal bronchioles, and alveoli caused by the immune response to the inhalation of an offending environmental airborne agent. It can manifest as exertional dyspnea, fatigue, weight loss, and progressive respiratory failure if left untreated. Because of its protean features, it can be misdiagnosed as other common obstructive lung conditions such as asthma. If triggers are not avoided, it can progress to irreversible pulmonary fibrosis...
March 2017: Journal of Community Hospital Internal Medicine Perspectives
https://www.readbyqxmd.com/read/28638425/the-effect-of-wood-aerosols-and-bioaerosols-on-the-respiratory-systems-of-wood-manufacturing-industry-workers-in-golestan-province
#18
Phateme Badirdast, Mansour Rezazadeh Azari, Soussan Salehpour, Ali Ghadjari, Soheila Khodakarim, Davod Panahi, Moslem Fadaei, Abolfazl Rahimi
BACKGROUND: Occupational exposure to dust leads to acute and chronic respiratory diseases, occupational asthma, and depressed lung function. In the light of a lack of comprehensive studies on the exposure of Iranian workers to wood dusts, the objective of this study was to monitor the occupational exposure to wood dust and bioaerosol, and their correlation with the lung function parameters in chipboard manufacturing industry workers. MATERIALS AND METHODS: A cross-sectional study was conducted on chipboard workers in Golestan Province; a total of 150 men (100 exposed cases and 50 controls) were assessed...
2017: Tanaffos
https://www.readbyqxmd.com/read/28629263/mass-spectrometry-based-analysis-of-murine-bronchoalveolar-lavage-fluid-following-respiratory-exposure-to-4-4-methylene-diphenyl-diisocyanate-aerosol
#19
Justin M Hettick, Brandon F Law, Chen-Chung Lin, Adam V Wisnewski, Paul D Siegel
1. Diisocyanates are highly reactive electrophiles utilized in the manufacture of a wide range of polyurethane products and have been identified as causative agents of occupational allergic respiratory disease. However, in spite of the significant occupational health burden associated with diisocyanate-induced asthma, the mechanism of disease pathogenesis remains largely unknown. 2. To better understand the fate of inhaled diisocyanates, a nose-only aerosol exposure system was constructed and utilized to expose a BALB/c mouse model to an aerosol generated from 4,4'-methylene diphenyl diisocyanate (MDI)...
July 21, 2017: Xenobiotica; the Fate of Foreign Compounds in Biological Systems
https://www.readbyqxmd.com/read/28625577/risk-factors-for-chronic-cough-among-14-669-individuals-from-the-general-population
#20
Yunus Çolak, Børge G Nordestgaard, Lars C Laursen, Shoaib Afzal, Peter Lange, Morten Dahl
BACKGROUND: Risk factors for chronic cough in the general population have not been described systematically. We identified and ranked chronic cough risk factors at the individual and community level using data from 14,669 individuals from the Copenhagen General Population Study. METHODS: Severity of chronic cough was assessed using the Leicester Cough Questionnaire (LCQ). We ranked chronic cough risk factors based on magnitude of age-adjusted ORs at the individual level and of the population attributable risks (PARs) at the community level...
June 15, 2017: Chest
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