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https://www.readbyqxmd.com/read/28537914/epigenomic-study-identifies-a-novel-mesenchyme-homeobox2-gli1-transcription-axis-involved-in-cancer-drug-resistance-overall-survival-and-therapy-prognosis-in-lung-cancer-patients
#1
Leonel Armas-López, Patricia Piña-Sánchez, Oscar Arrieta, Enrique Guzman de Alba, Blanca Ortiz-Quintero, Patricio Santillán-Doherty, David C Christiani, Joaquín Zúñiga, Federico Ávila-Moreno
Several homeobox-related gene (HOX) transcription factors such as mesenchyme HOX-2 (MEOX2) have previously been associated with cancer drug resistance, malignant progression and/or clinical prognostic responses in lung cancer patients; however, the mechanisms involved in these responses have yet to be elucidated. Here, an epigenomic strategy was implemented to identify novel MEOX2 gene promoter transcription targets and propose a new molecular mechanism underlying lung cancer drug resistance and poor clinical prognosis...
May 9, 2017: Oncotarget
https://www.readbyqxmd.com/read/28529146/multiple-endpoints-to-evaluate-pristine-and-remediated-titanium-dioxide-nanoparticles-genotoxicity-in-lung-epithelial-a549-cells
#2
Andrea Stoccoro, Sebastiano Di Bucchianico, Fabio Coppedè, Jessica Ponti, Chiara Uboldi, Magda Blosi, Camilla Delpivo, Simona Ortelli, Anna Luisa Costa, Lucia Migliore
Titanium dioxide nanoparticles (TiO2 NP) are broadly used in a wide range of applications. Several studies have reported that TiO2 NP possess cytotoxic and genotoxic properties that could induce adverse health effects in humans. The FP7 Sanowork project was aimed to minimize occupational hazard and exposure to engineered nanomaterials (ENM), including TiO2 NP, through the surface modification in order to avoid possible adverse toxic effects for humans. In this study we investigated cytotoxicity, genotoxicity and epigenetic properties of TiO2 NP uncoated and coated with silica or citrate, as well as of the benchmark material P25...
May 18, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28525996/cancer-risks-in-a-population-based-study-of-70-570-agricultural-workers-results-from-the-canadian-census-health-and-environment-cohort-canchec
#3
Linda Kachuri, M Anne Harris, Jill S MacLeod, Michael Tjepkema, Paul A Peters, Paul A Demers
BACKGROUND: Agricultural workers may be exposed to potential carcinogens including pesticides, sensitizing agents and solar radiation. Previous studies indicate increased risks of hematopoietic cancers and decreased risks at other sites, possibly due to differences in lifestyle or risk behaviours. We present findings from CanCHEC (Canadian Census Health and Environment Cohort), the largest national population-based cohort of agricultural workers. METHODS: Statistics Canada created the cohort using deterministic and probabilistic linkage of the 1991 Canadian Long Form Census to National Cancer Registry records for 1992-2010...
May 19, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28524802/effects-of-occupational-silica-exposure-on-oxidative-stress-and-immune-system-parameters-in-ceramic-workers-in-turkey
#4
Hatice Gul Anlar, Merve Bacanli, Servet İritaş, Ceylan Bal, Türker Kurt, Engin Tutkun, O Hinc Yilmaz, Nursen Basaran
Silica is the second most common element after oxygen, and therefore, exposures to crystalline silica dust occur in a large variety of occupations such as metal foundries, constructions, and ceramic, quarry, and pottery industries. Since crystalline silica exposure has been linked with silicosis, lung cancer, and other pulmonary diseases, adverse effect attributed to this element has be a cause for concern worldwide. Silica dust exposure in workers is still considered to be important health problem especially in developing countries...
May 19, 2017: Journal of Toxicology and Environmental Health. Part A
https://www.readbyqxmd.com/read/28521771/cancer-incidence-among-finnish-male-cobalt-production-workers-in-1969-2013-a-cohort-study
#5
Riitta Sauni, Panu Oksa, Jukka Uitti, Asko Linna, Raimo Kerttula, Eero Pukkala
BACKGROUND: There is inadequate evidence for the carcinogenicity of cobalt and cobalt compounds in humans. Consequently, the International Agency for Research on Cancer (IARC) has evaluated cobalt metal without tungsten carbide as possibly carcinogenic to humans (Group 2B). The aim of the study was to assess the risk of cancer among workers employed in a Finnish cobalt plant since the beginning of production in 1968. METHODS: The study cohort consisted of all males employed by the Finnish cobalt plant for at least a year during 1968-2004...
May 18, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28515054/longitudinal-decline-in-lung-function-among-older-construction-workers
#6
John M Dement, Laura S Welch, Knut Ringen, Kim Cranford, Patricia Quinn
BACKGROUND: Occupational exposures to vapours, gasses, dusts and fumes (VGDF) and chest X-ray abnormalities by the International Labour Office (ILO) classification system are associated with reduced lung function, with the majority of published studies being cross-sectional. We examined the effects of VGDF exposures, as well as ILO parenchymal changes, pleural plaque and diffuse pleural thickening (DPT) on reduction in lung function in a longitudinal study. METHODS: Chest radiographs and spirometry for 3150 ageing construction workers enrolled in a medical screening programme with a baseline and at least one follow-up examination were studied...
May 17, 2017: Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/28513319/effect-of-surface-functionalizations-of-multi-walled-carbon-nanotubes-on-neoplastic-transformation-potential-in-primary-human-lung-epithelial-cells
#7
Todd A Stueckle, Donna C Davidson, Ray Derk, Peng Wang, Sherri Friend, Diane Schwegler-Berry, Peng Zheng, Nianqiang Wu, Vince Castranova, Yon Rojanasakul, Liying Wang
Functionalized multi-walled carbon nanotube (fMWCNT) development has intensified to improve their surface activity for numerous applications, and potentially reduce toxic effects. Although MWCNT exposures are associated with lung tumorigenesis in vivo, adverse responses associated with exposure to different fMWCNTs in human lung epithelium are presently unknown. This study hypothesized that different plasma coating functional groups determine MWCNT neoplastic transformation potential. Using our established model, human primary small airway epithelial cells (pSAECs) were continuously exposed for 8 and 12 weeks at 0...
May 17, 2017: Nanotoxicology
https://www.readbyqxmd.com/read/28513256/do-current-oels-for-silica-protect-from-obstructive-lung-impairment-a-critical-review-of-epidemiological-data
#8
Perrine Hoet, Laure Desvallées, Dominique Lison
Inhalation of respirable crystalline silica (RCS) can lead to serious health effects such as silicosis and lung cancer. There also seems to be a general consensus to consider that RCS exposure is associated with obstructive lung impairment or chronic obstructive pulmonary disease (COPD), a leading cause of mortality, morbidity, and disability worldwide. It is, however, not clear whether occupational exposure levels (OELs), generally set to prevent silicosis, also protect workers from developing an obstructive impairment...
May 17, 2017: Critical Reviews in Toxicology
https://www.readbyqxmd.com/read/28510733/radon-dosimetry-for-workers-icrp-s-approach
#9
James W Marsh, Dominique Laurier, Margot Tirmarche
The International Commission on Radiological Protection (ICRP) has recently published two reports on radon exposure; Publication 115 on lung cancer risks from radon and radon progeny and Publication 126 on radiological protection against radon exposure. A specific graded approach for the control of radon in workplaces is recommended where a dose assessment is required in certain situations. In its forthcoming publication on Occupational Intakes of Radionuclides (OIR) document, Part 3, effective dose coefficients for radon and thoron will be provided...
May 16, 2017: Radiation Protection Dosimetry
https://www.readbyqxmd.com/read/28490662/occupational-exposure-to-endotoxins-and-lung-cancer-risk-results-of-the-icare-study
#10
Soumaya Ben Khedher, Monica Neri, Florence Guida, Mireille Matrat, Sylvie Cenée, Marie Sanchez, Gwenn Menvielle, Florence Molinié, Danièle Luce, Isabelle Stücker
OBJECTIVES: To investigate the role of occupational exposure to endotoxins in lung cancer in a French population-based case-control study (ICARE (Investigation of occupational and environmental causes of respiratory cancers)). METHODS: Detailed information was collected on the occupational history and smoking habits from 2926 patients with histologically confirmed lung cancer and 3555 matched controls. We evaluated each subject's endotoxin exposure after cross referencing International Standard Classification of Occupations (ISCO) codes (for job tasks) and Nomenclature d'Activités Françaises (NAF) codes (for activity sectors)...
May 10, 2017: Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/28481981/socioeconomic-position-and-mortality-risk-of-smoking-evidence-from-the-english-longitudinal-study-of-ageing-elsa
#11
Dan Lewer, Martin McKee, Antonio Gasparrini, Aaron Reeves, Cesar de Oliveira
: It is not clear whether the harm associated with smoking differs by socioeconomic status. This study tests the hypothesis that smoking confers a greater mortality risk for individuals in low socioeconomic groups, using a cohort of 18 479 adults drawn from the English Longitudinal Study of Ageing. Additive hazards models were used to estimate the absolute smoking-related risk of death due to lung cancer or Chronic Obstructive Pulmonary Disease (COPD). Smoking was measured using a continuous index that incorporated the duration of smoking, intensity of smoking and the time since cessation...
May 7, 2017: European Journal of Public Health
https://www.readbyqxmd.com/read/28481622/cardiomyocytes-of-the-heart-and-pulmonary-veins-novel-contributors-to-asthma
#12
Stephen Sai Folmsbee, Cara J Gottardi
Recent genome-wide association studies have implicated both cardiac and pulmonary vein-related genes in the pathogenesis of asthma. Since cardiac cells are not present in lung airways or viewed to affect the immune system, interpretation of these findings in the context of more well-established contributors to asthma has remained challenging. However, cardiomyocytes are present in the lung, specifically along pulmonary veins, and recent murine models suggest that cardiac cells lining pulmonary veins may contribute to allergic airway disease...
May 8, 2017: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/28481369/e-smoking-emerging-public-health-problem
#13
REVIEW
Mateusz Jankowski, Grzegorz Brożek, Joshua Lawson, Szymon Skoczyński, Jan Eugeniusz Zejda
E-cigarette use has become increasingly popular, especially among the young. Its long-term influence upon health is unknown. Aim of this review has been to present the current state of knowledge about the impact of e-cigarette use on health, with an emphasis on Central and Eastern Europe. During the preparation of this narrative review, the literature on e-cigarettes available within the network PubMed was retrieved and examined. In the final review, 64 research papers were included. We specifically assessed the construction and operation of the e-cigarette as well as the chemical composition of the e-liquid; the impact that vapor arising from the use of e-cigarette explored in experimental models in vitro; and short-term effects of use of e-cigarettes on users' health...
May 8, 2017: International Journal of Occupational Medicine and Environmental Health
https://www.readbyqxmd.com/read/28472268/nickel-induces-transcriptional-down-regulation-of-dna-repair-pathways-in-tumorigenic-and-non-tumorigenic-lung-cells
#14
Susan E Scanlon, Christine D Scanlon, Denise C Hegan, Parker L Sulkowski, Peter M Glazer
The heavy metal nickel is a known carcinogen, and occupational exposure to nickel compounds has been implicated in human lung and nasal cancers. Unlike many other environmental carcinogens, however, nickel does not directly induce DNA mutagenesis, and the mechanism of nickel-related carcinogenesis remains incompletely understood. Cellular nickel exposure leads to signaling pathway activation, transcriptional changes, and epigenetic remodeling, processes also impacted by hypoxia, which itself promotes tumor growth without causing direct DNA damage...
May 2, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/28468931/pleural-abnormalities-in-the-framingham-heart-study-prevalence-and-ct-image-features
#15
Tetsuro Araki, Masahiro Yanagawa, Fangui Jenny Sun, Josée Dupuis, Mizuki Nishino, Yoshitake Yamada, George R Washko, David C Christiani, Noriyuki Tomiyama, George T O'Connor, Gary M Hunninghake, Hiroto Hatabu
BACKGROUND: The prevalence of pleural abnormalities in the general population is an epidemiologically important index of asbestos exposure, which has not been investigated since a radiography-based study in 1980. METHODS: We examined 2633 chest CT scans (mean 59.2 years, 50% female) from the Framingham Heart Study (FHS) for the presence and image characteristics of pleural plaques and diffuse pleural thickening. Demographics and pulmonary function were stratified by the presence of pleural abnormalities in association with interstitial lung abnormalities...
May 3, 2017: Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/28462735/esbl-carriage-in-pig-slaughterhouse-workers-is-associated-with-occupational-exposure
#16
W Dohmen, L VAN Gompel, H Schmitt, A Liakopoulos, L Heres, B A Urlings, D Mevius, M J M Bonten, D J J Heederik
We investigated the prevalence of extended-spectrum β-lactamase (ESBL) carriage in slaughterhouse workers and the association with occupational exposure to slaughter animals and products. Stool samples from 334 employees in a Dutch pig slaughterhouse were obtained. Presence of ESBL was determined by selective plating, microarray analysis, and gene sequencing. Questionnaires were used to collect personal and occupational information. The overall prevalence of ESBL carriage was 4·8% (16/334). All ESBL-producing isolates were Escherichia coli...
May 2, 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28450064/a-paradoxical-response-of-the-rat-organism-to-long-term-inhalation-of-silica-containing-submicron-predominantly-nanoscale-particles-of-a-collected-industrial-aerosol-at-realistic-exposure-levels
#17
Marina P Sutunkova, Svetlana N Solovyeva, Boris A Katsnelson, Vladimir B Gurvich, Larisa I Privalova, Ilzira A Minigalieva, Tatyana V Slyshkina, Irene E Valamina, Oleg H Makeyev, Vladimir Ya Shur, Ilya V Zubarev, Dmitry K Kuznetsov, Ekaterina V Shishkina
While engineered SiO2 nanoparticle toxicity is being widely investigated, mostly on cell lines or in acute animal experiments, the practical importance of as well as the theoretical interest in industrial condensation aerosols with a high SiO2 particle content seems to be neglected. That is why, to the best of our knowledge, long-term inhalation exposure to nano-SiO2 has not been undertaken in experimental nanotoxicology studies. To correct this data gap, female white rats were exposed for 3 or 6 months 5 times a week, 4h a day to an aerosol containing predominantly submicron (nanoscale included) particles of amorphous silica at an exposure concentration of 2...
April 24, 2017: Toxicology
https://www.readbyqxmd.com/read/28446737/pleural-mesothelioma-in-doll-manufacture-possible-asbestos-exposure
#18
Pietro Gino Barbieri, Anna Benedetta Somigliana, Sandra Lombardi, Roberto Festa, Roberto Girelli, Michela Sarnico
BACKGROUND: The occurrence of malignant mesothelioma is almost always causally associated to asbestos exposure but, considering women occurrences, this association is often difficult to demonstrate and consequently the asbestos exposure is defined as 'unknown'. OBJECTIVES: To describe the working activity and to give occupational asbestos exposure probability estimation related to an uncommon and poorly investigated productive sector: doll manufacture. METHODS: From the Province of Brescia Mesothelioma Registry, established in 1993 on population-based criteria, we have extracted the certified mesothelioma diagnosis cases, related to patients who were employed for some time in doll manufacture...
April 21, 2017: La Medicina del Lavoro
https://www.readbyqxmd.com/read/28444932/the-association-of-lamb1-polymorphism-and-expression-changes-with-the-risk-of-coal-workers-pneumoconiosis
#19
Xiaoming Ji, Baiqun Wu, Ruhui Han, Jingjin Yang, Esther Ayaaba, Ting Wang, Lei Han, Chunhui Ni
BACKGROUND: Pneumoconiosis is a serious occupational disease worldwide, which is characterized by irreversible and diffuse lung fibrotic lesions. Laminin beta 1(LAMB1) is widely expressed in tissues and it is crucial for both lung morphogenesis and physiological function. In this study, we explored the association between LAMB1 rs4320486 and risk of pneumoconiosis in a Chinese population, as well as its mechanisms. METHODS: In this case-control study, 600 CWP patients and 605 controls were genotyped for the LAMB1 rs4320486 polymorphism using TaqMan methods...
April 26, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/28443582/high-resolution-computed-tomography-and-pulmonary-function-findings-of-occupational-arsenic-exposure-in-workers
#20
Recai Ergün, Ender Evcik, Dilek Ergün, Begüm Ergan, Esin Özkan, Özge Gündüz
BACKGROUND: The number of studies where non-malignant pulmonary diseases are evaluated after occupational arsenic exposure are very few. AIMS: The aim of this study is to show the effects of occupational arsenic exposure on the lung by high-resolution computed tomography (HRCT) and pulmonary function tests (PFTs). STUDY DESIGN: Retrospective cross-sectional study. METHODS: In this study 256 workers who were suspected respiratory occupational arsenic exposure are included, having average age 32...
April 6, 2017: Balkan Medical Journal
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