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occupational exposure

Rafael E de la Hoz, Jonathan Weber, Dongming Xu, John T Doucette, Xiaoyu Liu, Deborah A Carson, Juan C Celedón
We examined the chest CT scans of 1,453 WTC responders using the International Classification of High-resolution CT for Occupational and Environmental Respiratory Diseases. Univariate and bivariate analyses of potential work-related pleural abnormalities were performed with pre-WTC and WTC-related occupational exposure data, spirometry, demographics and quantitative CT measurements. Logistic regression was used to evaluate occupational predictors of those abnormalities. Chest CT scans were performed first at a median of 6...
March 15, 2018: Archives of Environmental & Occupational Health
Érica Prado Domingues, Guilherme Gomes Silva, Andrei Barbassa Oliveira, Lorrany Marins Mota, Vanessa Santana Vieira Santos, Edimar Olegário de Campos, Boscolli Barbosa Pereira
Workers in several occupational environments are exposed to pollutants. Street vendors, for example, typically work in a high-traffic urban environment and are exposed to numerous air pollutants, including genotoxic substances emitted by motor vehicles. This study examined the genotoxic effects of exposure to air pollution. We conducted cytological analyses to assess frequencies of micronucleated (MN) and binucleated (BN) cells in a sample of exfoliated oral mucosa cells. We compared street vendors and control subjects in the city of Uberlândia, Minas Gerais, Brazil, and also collected quantitative information on exposure conditions of all test subjects, including concentrations of particulate matter...
March 14, 2018: Environmental Monitoring and Assessment
Shubhra Jain, Vinod Joshi, Yogendra S Rathore, Narendra Khippal
Several occupational hazards, especially exposure to silica, have been implicated as causal factors for the development of scleroderma-like disorders. Compared to other connective tissue disorders, silica-associated systemic sclerosis (SA-SS) is relatively rare. Silica-induced scleroderma is indistinguishable from idiopathic systemic sclerosis. However, the former expresses a high predisposition of pulmonary involvement and anti-Scl-70 antibody. We report the case of a 42-year-old male, stone cutter by occupation, who was diagnosed as simple chronic silicosis and developed systemic sclerosis...
May 2017: Indian Journal of Occupational and Environmental Medicine
Mette Schou Nissen, Zara Ann Stokholm, Mette Skovgaard Christensen, Vivi Schlünssen, Jesper Medom Vestergaard, Inge Brosbøl Iversen, Henrik Albert Kolstad
BACKGROUND: Sinonasal adenocarcinoma is a rare disease expected to have rare causes and potential for strong risk factors as reflected by the strong association with occupational wood dust exposure. High level styrene exposure is a rare and suspected carcinogen, and this study examines the exposure-response relation between occupational styrene exposure, sinonasal adenocarcinoma and other subtypes. METHODS: We followed 73 092 styrene-exposed workers from 1968 to 2011 and identified sinonasal cancers in the Danish Cancer Registry...
March 14, 2018: Occupational and Environmental Medicine
F L Chan, R House, I Kudla, J C Lipszyc, N Rajaram, S M Tarlo
Background: 3D printers emit potentially hazardous ultrafine particles and volatile organic compounds. Workers using 3D printing technologies may be at risk of respiratory illness from occupational exposure. Aims: To assess whether 3D printing is associated with health effects in occupational users. Methods: This was a preliminary survey. Workers in 17 companies using 3D printing, including commercial prototyping businesses, educational institutions and public libraries, in the Greater Toronto Area, Canada, were asked to complete survey questionnaires concerning demographic, occupational and health information...
March 10, 2018: Occupational Medicine
Hasmik Grigoryan, William M B Edmands, Qing Lan, Henrik Carlsson, Roel Vermeulen, Luoping Zhang, Song-Nian Yin, Gui-Lan Li, Martyn T Smith, Nathaniel Rothman, Stephen M Rappaport
Although benzene has long been recognized as a cause of human leukemia, the mechanism by which this simple molecule causes cancer has been problematic. A complicating factor is benzene metabolism, which produces many reactive intermediates, some specific to benzene and others derived from redox processes. Using archived serum from 20 nonsmoking Chinese workers, 10 with and 10 without occupational exposure to benzene (exposed: 3.2 - 88.9 ppm, controls: 0.002 - 0.020 ppm), we employed an adductomic pipeline to characterize protein modifications at Cys34 of human serum albumin (HSA), a nucleophilic hotspot in extracellular fluids...
March 10, 2018: Carcinogenesis
Hien Q Le, John A Tomenson, David B Warheit, Jon P Fryzek, Ashley P Golden, Elizabeth D Ellis
OBJECTIVE: A review of studies of occupational titanium dioxide (TiO2) exposure was conducted, and results from the three industry-based cohort mortality studies were summarized using meta-analysis. METHODS: Summary standardized mortality ratios (SSMR) and summary Cox regression coefficients from exposure-response models were derived using random effects models. RESULTS: Results from studies of 24,312 TiO2 production workers were combined...
March 13, 2018: Journal of Occupational and Environmental Medicine
Tunga Salthammer, Yinping Zhang, Jinhan Mo, Holger M Koch, Charles J Weschler
There is an ongoing probing of the role of chemicals in the indoor environment. The majority of potential target substances are so-called very volatile, volatile and semi volatile organic compounds (VVOCs, VOCs and SVOCs). Depending on their physical properties and mass transfer conditions, they distribute in or between the gas phase, particle phase, settled house dust, surface films, clothing and other fabrics as well as the exposed skin and hair of the occupants themselves. Therefore, inhalation, ingestion and dermal uptake all must be considered as relevant pathways for the exposure assessment in human habitats...
March 14, 2018: Angewandte Chemie
Ellen Kerns, Elizabeth A Masterson, Christa L Themann, Geoffrey M Calvert
BACKGROUND: The purpose of this study was to estimate the prevalence of occupational noise exposure, hearing difficulty and cardiovascular conditions within US industries and occupations, and to examine any associations of these outcomes with occupational noise exposure. METHODS: National Health Interview Survey data from 2014 were examined. Weighted prevalence and adjusted prevalence ratios of self-reported hearing difficulty, hypertension, elevated cholesterol, and coronary heart disease or stroke were estimated by level of occupational noise exposure, industry, and occupation...
March 14, 2018: American Journal of Industrial Medicine
Kevin M Walters, Gwenith G Fisher, Liliana Tenney
BACKGROUND: Understanding worker health and safety in the rapidly growing legal U.S. cannabis industry is important. Although little published research exists, workers may be exposed to biological, chemical, and physical hazards. This study investigated the Colorado cannabis industry workforce and both physical and psychosocial hazards to worker health and safety. METHODS: Two hundred and fourteen Colorado cannabis workers completed an online survey after in-person and online recruitment...
March 14, 2018: American Journal of Industrial Medicine
Timothy Patterson, Peter Currie, Robert Spence, Sinead McNally, Gary Spence
BACKGROUND: Inguinal hernia is a common surgical presentation. Evidence for its causation regarding occupational and recreational physical exposures is limited. The aim of this study is to conduct a systematic review objectively evaluating the evidence for a causal link between a single strenuous event and the development of an inguinal hernia. METHOD: A systematic review was carried out in accordance with PRISMA guidelines. PubMed, Ovid Embase, SCOPUS, and Cochrane Library were searched...
March 10, 2018: Surgeon: Journal of the Royal Colleges of Surgeons of Edinburgh and Ireland
Yi Wang, Hao Fan, Rudy Banerjee, Anne M Weaver, Michael Weiner
Long-term exposure to ambient air pollution increases disease risk in older adults. Nursing facilities located near major roadways potentially expose older adults to traffic pollution. No studies, however, have described the association between nursing facilities and traffic pollution. We obtained data on facility- and census-tract-level characteristics of 15,706 U.S. facilities from the Medicare Nursing Home Compare datasets. We calculated distance to major roadways and traffic density for each facility. In the contiguous U...
March 10, 2018: International Journal of Environmental Research and Public Health
Clare Gilham, Christine Rake, John Hodgson, Andrew Darnton, Garry Burdett, James Peto Wild, Michelle Newton, Andrew G Nicholson, Leslie Davidson, Mike Shires, Tom Treasure, Julian Peto
Background: Occupational and environmental airborne asbestos concentrations are too low and variable for lifetime exposures to be estimated reliably, and building workers and occupants may suffer higher exposure when asbestos in older buildings is disturbed or removed. Mesothelioma risks from current asbestos exposures are therefore not known. Methods: We interviewed and measured asbestos levels in lung samples from 257 patients treated for pneumothorax and 262 with resected lung cancer, recruited in England and Wales...
March 9, 2018: International Journal of Epidemiology
Junghyun Lee, Miran Hahm, Da-An Huh, Sang-Hoon Byeon
The purpose of this study was to classify hazards at an industrial level and evaluate the exposure risks of workers exposed to dimethylformamide (DMF) used as a solvent in the workplace and to determine industries that need priority measures in managing DMF exposure. We calculated hazard quotients at an industrial level. The exposure data of DMF in the workplace were obtained from the work environment monitoring program provided by the Korea Occupational Safety and Health Agency. The evaluation was conducted on textile manufacturing, leather manufacturing, chemical manufacturing, pharmaceutical manufacturing, and rubber manufacturing industries, which have many unit work sites handling DMF...
March 13, 2018: International Journal of Environmental Research and Public Health
Andreas Stang, Jürgen C Becker, Paul Nghiem, Jacques Ferlay
AIM: The aim of this article was to provide worldwide, population-based incidence rates for Merkel cell carcinoma (MCC). METHODS: We included 11,576 cases from 20 countries for time trend analyses (1990-2007) and 11,028 cases (2.5 billion person-years) from 21 countries for the period 2003-2007 extracted from Cancer Incidence in Five Continents. We computed age-standardised incidence rates (World Standard population) per million person years and sex ratios of these rates...
March 10, 2018: European Journal of Cancer
Mette Skovgaard Christensen, Jesper Medom Vestergaard, Francesco d'Amore, Jette Sønderskov Gørløv, Gunnar Toft, Cecilia Høst Ramlau-Hansen, Zara Ann Stokholm, Inge Brosbøl Iversen, Mette Schou Nissen, Henrik Albert Kolstad
BACKGROUND: Styrene is an important industrial chemical that the general population is exposed to at low levels. Previous research has suggested increased occurrence of leukemia and lymphoma among reinforced plastics workers exposed at high levels of styrene. METHODS: We followed 73,036 workers of 456 small and medium sized Danish reinforced plastics companies 1968-2011 and investigated the exposure-response relation between cumulative styrene exposure and incidence of lymphohematopoietic malignancies...
March 10, 2018: Epidemiology
P Fallahi, R Foddis, G Elia, F Ragusa, A Patrizio, G Guglielmi, G Frenzilli, S Benvenga, A Cristaudo, A Antonelli, S M Ferrari
Vanadium is a soft, silvery‑grey metal with a number of different oxidation states. The most common commercial form of vanadium is vanadium pentoxide (V2O5). All vanadium compounds are considered toxic. An increase in skin rashes has been observed in certain vanadium workers, including the development of atopic dermatitis. However, to the best of our knowledge, no prior in vivo or in vitro studies have evaluated the effect of vanadium exposure in human dermal fibroblasts. The present study evaluated the effect of V2O5 on proliferation and chemokine secretion in dermal fibroblasts...
March 9, 2018: Molecular Medicine Reports
Jonas Nilsson, Georg Holgersson, Jacob Järås, Stefan Bergström, Michael Bergqvist
Socioeconomic status (SES) and its association with cancer in general have been thoroughly studied in the last decades. Several studies have shown associations between SES and many types of cancer such as lung cancer, breast cancer, and prostate cancer. For gliomas, no clear occupational or exposure risk factors have been identified, although some possible risk factors such as use of cellular telephone are still controversial. The aim in the present study is to analyze whether there is an association between SES and development of brain cancer...
March 13, 2018: Medical Oncology
Carsten Goebel, Thomas L Diepgen, Brunhilde Blömeke, Anthony A Gaspari, Axel Schnuch, Anne Fuchs, Kordula Schlotmann, Maya Krasteva, Ian Kimber
Occupational exposure of hairdressers to hair dyes has been associated with the development of allergic contact dermatitis (ACD) involving the hands. p-Phenylenediamine (PPD) and toluene-2,5-diamine (PTD) have been implicated as important occupational contact allergens. To conduct a quantitative risk assessment for the induction of contact sensitization to hair dyes in hairdressers, available data from hand rinsing studies following typical occupational exposure conditions to PPD, PTD and resorcinol were assessed...
March 9, 2018: Regulatory Toxicology and Pharmacology: RTP
Isabelle Niedhammer, Thomas Lesuffleur, Géraldine Labarthe, Jean-François Chastang
BACKGROUND: Social inequalities in work injury have been observed but explanations are still missing. The objectives of this study were to evaluate the contribution of working conditions in the explanation of social inequalities in work injury in a national representative sample of employees. METHODS: The study was based on the cross-sectional sample of the national French survey SUMER 2010 including 46,962 employees, 26,883 men and 20,079 women. The number of work injuries within the last 12 months was studied as the outcome...
March 12, 2018: BMC Public Health
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