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Groenewold M, Brown L, Smith E, Haring Sweeney M, Pana‐Cryan R, Schnorr T. Burden of occupational morbidity from selected causes in the United States overall and by NORA industry sector, 2012: A conservative estimate. Am J Ind Med 2019; 62:1117-1134. [PMID: 31520453 DOI: 10.1002/ajim.23048] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Revised: 08/25/2019] [Accepted: 08/27/2019] [Indexed: 12/21/2022]
Abstract
BACKGROUND Timely and reliable national estimates of the occurrence of occupational injury and illness are needed to monitor the burden of occupational morbidity and mortality, establish research and intervention priorities, and evaluate the progress and effectiveness of prevention efforts. METHODS We provide updated estimates of morbidity from occupational injuries and selected illnesses, using current general population incidence rates, the proportion of the general public with a particular workplace exposure, and the relative risk of illness from that exposure. We provide estimates for the total U.S. working population and for specific industry sectors. RESULTS We estimate that, in 2012, between 5 712 362 and 5 961 620 total occupational cases, including 0.7 to 1.0 million incident illnesses and 5.0 million injuries, occurred in the United States. CONCLUSION The variety of disparate data sources and methods required to compile these estimates highlight the need for more comprehensive and compatible occupational health surveillance in the United States.
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Affiliation(s)
- Matthew Groenewold
- Division of Field Studies and EngineeringNational Institute for Occupational Safety and Health, CDC Cincinnati Ohio
| | - Linda Brown
- Biostatistics and Epidemiology DivisionRTI International, Research Triangle Park North Carolina
| | - Emily Smith
- Biostatistics and Epidemiology DivisionRTI International, Research Triangle Park North Carolina
| | - Marie Haring Sweeney
- Division of Field Studies and EngineeringNational Institute for Occupational Safety and Health, CDC Cincinnati Ohio
| | - Rene Pana‐Cryan
- Office of the DirectorNational Institute for Occupational Safety and Health Washington, DC
| | - Theresa Schnorr
- Division of Field Studies and EngineeringNational Institute for Occupational Safety and Health, CDC Cincinnati Ohio
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Affiliation(s)
- Julia Kastner
- University of Maryland School of Medicine, Baltimore, MD
| | - Rydhwana Hossain
- University of Maryland School of Medicine, Cardiothoracic Imaging, Department of Diagnostic Radiology and Nuclear Medicine, University of Maryland Medical Center, Baltimore, MD
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Tomioka K, Saeki K, Obayashi K, Kurumatani N. Risk of Lung Cancer in Workers Exposed to Benzidine and/or Beta-Naphthylamine: A Systematic Review and Meta-Analysis. J Epidemiol 2016; 26:447-58. [PMID: 26947956 PMCID: PMC5008964 DOI: 10.2188/jea.je20150233] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Accepted: 10/25/2015] [Indexed: 11/18/2022] Open
Abstract
Benzidine (BZ) and beta-naphthylamine (BNA) have been classified as definite human carcinogens for bladder cancer by the International Agency for Research on Cancer. However, the epidemiological evidence for an association between exposure to BZ and/or BNA and lung cancer has been inconclusive. We conducted a systematic review and meta-analysis to determine the risk for lung cancer among workers exposed to BZ/BNA. A systematic literature search was conducted to identify studies that had reported occupational BZ/BNA exposure and the outcome of interest (lung cancer death and/or incidence). Meta-analyses were performed using random effects models to combine standardized mortality ratios (SMRs) or standardized incidence ratios (SIRs). We identified 23 retrospective cohort studies including 1745 cases of lung cancer; only one study reported smoking-adjusted lung cancer risk. A significantly increased lung cancer risk (pooled SMR/SIR 1.28; 95% CI, 1.14-1.43) was observed by combining all studies, with significant heterogeneity among studies (I(2) = 64.1%, P < 0.001). Effect estimates were higher for studies with direct BZ/BNA exposure (ie, dyestuff and manufacturing industries) (pooled SMR/SIR 1.58; 95% CI, 1.31-1.89), and studies that identified BZ/BNA-associated bladder cancer with SMR/SIR ≥4.7 (pooled SMR/SIR 1.68; 95% CI, 1.35-2.09). Effect estimates were similar for studies with and without concomitant occupational exposure to chromium, asbestos, arsenic, or bis(chloromethyl) ether. The cumulative meta-analysis showed that the evidence of association between occupational BZ/BNA exposure and lung cancer has been stable since 1995. Although the results of this meta-analysis have the potential for confounding by smoking and heterogeneity, our findings suggest that a finding of lung cancer following occupational BZ/BNA exposure should be considered to be a potential occupational disease.
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Clin B, Pairon JC. Medical follow-up for workers exposed to bladder carcinogens: the French evidence-based and pragmatic statement. BMC Public Health 2014; 14:1155. [PMID: 25377503 PMCID: PMC4230399 DOI: 10.1186/1471-2458-14-1155] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2014] [Accepted: 10/17/2014] [Indexed: 01/18/2023] Open
Abstract
BACKGROUND The aim of this work was to establish recommendations for the medical follow-up of workers currently or previously exposed to carcinogenic substances for the bladder. METHODS A critical synthesis of the literature was conducted. Sectors of activity where workers are or were exposed to carcinogenic substances for the bladder were listed and classified according to the level of bladder cancer risk. Performances of techniques available for the targeted screening of bladder cancer were analysed, including a simulation of results among high-risk populations in France. RESULTS The risk level for the professional group and the latency period between the start of exposure and the natural history of the disease were selected to define a targeted screening protocol. The NMP22BC test, exclusive haematuria testing, and combinations of urine cytology with, respectively, the NMP22BC test and haematuria test, generated an extremely high proportion of false positive results. CONCLUSION Urine cytology is the test that offers the best specificity. Although poor for all bladder cancer stages and grades combined, its sensitivity is better for high grades, which require early diagnosis since late-stage cancers are of very poor prognosis. These results suggest that urine cytology is currently the only technique suitable for proposal within the context of a first line targeted screening strategy for occupational bladder cancer. An algorithm summarising the recommended medical follow-up for workers currently or previously exposed to carcinogenic substances for the bladder is proposed, based on the level of risk of bladder cancer.
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Affiliation(s)
- Bénédicte Clin
- />Cancers and prevention, U1086 INSERM, Faculty of Medicine, Caen University Hospital, Caen, France
- />Service de Santé au Travail et Pathologie Professionnelle (Occupational Health Department), C.H.U. (University Hospital) Côte de Nacre, 14033 CAEN Cedex, France
| | - “RecoCancerProf” Working Group
- />Cancers and prevention, U1086 INSERM, Faculty of Medicine, Caen University Hospital, Caen, France
- />Service de Santé au Travail et Pathologie Professionnelle (Occupational Health Department), C.H.U. (University Hospital) Côte de Nacre, 14033 CAEN Cedex, France
- />INSERM, Unité 955, Université Paris-Est Créteil, 94000 Créteil, France
- />Centre Hospitalier Intercommunal de Créteil, Service de Pneumologie et de Pathologie Professionnelle, 94000 Créteil, France
| | - Jean-Claude Pairon
- />INSERM, Unité 955, Université Paris-Est Créteil, 94000 Créteil, France
- />Centre Hospitalier Intercommunal de Créteil, Service de Pneumologie et de Pathologie Professionnelle, 94000 Créteil, France
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Tomioka K, Saeki K, Obayashi K, Tanaka Y, Kurumatani N. Risk for lung cancer in workers exposed to benzidine and/or beta-naphthylamine: a protocol for systematic review and meta-analysis. Syst Rev 2014; 3:112. [PMID: 25281283 PMCID: PMC4186647 DOI: 10.1186/2046-4053-3-112] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Accepted: 09/24/2014] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Risk for lung cancer in workers exposed to benzidine (BZ) and/or beta-naphthylamine (BNA), which are well-known bladder carcinogens, has been examined in many epidemiological studies, but individual epidemiological studies generally lack the power to examine the association between BZ/BNA exposure and lung cancer. We conduct a systematic review and meta-analysis to determine the risk for lung cancer among workers exposed to BZ/BNA occupationally. METHODS/DESIGN Studies will be identified by a MEDLINE, EMBASE, CDSR, and CINAHL search and by the reference lists of articles/relevant reviews. Eligible studies will be cohort and case-control studies that report occupational BZ/BNA exposure and the outcome of interest (lung cancer death/incidence). The method of meta-analysis will be used to combine standardized mortality ratios (SMRs) and/or standardized incidence ratios (SIRs) from retrospective and prospective cohort studies and odds ratios (ORs) from case-control studies. Two reviewers will independently screen articles, extract data, and assess scientific quality using standardized forms and published quality assessment tools tailored for each study design. Overall pooled risk estimates and their corresponding 95% confidence intervals (CIs) will be obtained using random effects model. This systematic review and meta-analysis will be conducted following the Meta-analysis of Observational Studies in Epidemiology (MOOSE) guidelines, and results will be reported according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement. DISCUSSION This review will identify and synthesize studies of the association between occupational BZ/BNA exposure and lung cancer. The findings will help to identify whether BZ/BNA could cause lung cancer and might indicate whether workers with exposure to BZ/BNA have a need for preventive measures against non-urological cancer besides bladder cancer. SYSTEMATIC REVIEW REGISTRATION PROSPERO CRD42014010250.
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Affiliation(s)
- Kimiko Tomioka
- Department of Community Health and Epidemiology, Nara Medical University, Shijo-cho 840, Kashihara City, Nara 634-8521, Japan
| | - Keigo Saeki
- Department of Community Health and Epidemiology, Nara Medical University, Shijo-cho 840, Kashihara City, Nara 634-8521, Japan
| | - Kenji Obayashi
- Department of Community Health and Epidemiology, Nara Medical University, Shijo-cho 840, Kashihara City, Nara 634-8521, Japan
| | - Yuu Tanaka
- Department of Anesthesiology, Nara Medical University, Shijo-cho 840, Kashihara City, Nara, Japan
| | - Norio Kurumatani
- Department of Community Health and Epidemiology, Nara Medical University, Shijo-cho 840, Kashihara City, Nara 634-8521, Japan
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Tomioka K, Obayashi K, Saeki K, Okamoto N, Kurumatani N. Increased risk of lung cancer associated with occupational exposure to benzidine and/or beta-naphthylamine. Int Arch Occup Environ Health 2014; 88:455-65. [PMID: 25151432 DOI: 10.1007/s00420-014-0974-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2013] [Accepted: 08/12/2014] [Indexed: 11/28/2022]
Abstract
PURPOSE To evaluate non-urological cancer risks associated with benzidine (BZ) and beta-naphthylamine (BNA), a historical cohort study was undertaken. METHODS A total of 224 male workers exposed to BZ/BNA from a single factory were followed from 1953 to 2011. To estimate BZ/BNA exposure dose, duration of exposure (DOE) was defined as duration of employment between 1953 and 1972, the period when BZ and BNA were produced and used at this factory. Subjects were dichotomized (into long- and short-term groups) based on the median of DOE. Cancer-specific standardized incidence ratios (SIRs) were calculated using national and regional incidence rates as reference. Smoking history was obtained through questionnaires and other sources. Association between lung cancer (LC) or bladder cancer (BC) incidence and DOE was assessed using Cox's proportional hazards model. RESULTS Vital status follow-up was successful for 216 (96.4%). Follow-up duration averaged 44.0 (SD 10.7) years. Increased SIRs based on national rates were found for all cancers (81 cases, SIR = 1.58, 95% CI 1.26-1.98), LC (18 cases, SIR = 2.58, 95% CI 1.53-4.07), and BC (7 cases, SIR = 4.70, 95% CI 1.89-9.67). Among workers with >20 years after first exposure, the SIR for LC was statistically elevated in the long DOE group (15 cases, SIR = 3.34, 95% CI 1.87-5.51). After adjustment for smoking, exposure to bis(chloromethyl) ether, and age at first exposure, a marginally significant hazard ratio (HR) was observed for the long DOE group (adjusted HR = 3.02, 95% CI 0.84-10.93, p = 0.091), compared to the short DOE group. DOE did not affect BC incidence. CONCLUSIONS This study confirms the high risk of LC besides BC, suggesting that BZ/BNA have the potential to cause LC.
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Affiliation(s)
- Kimiko Tomioka
- Department of Community Health and Epidemiology, Nara Medical University, Shijo-cho 840, Kashihara City, Nara, zip code 6348521, Japan,
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Amit D, Gofrit ON, Matouk I, Birman T, Hochberg A. Use of preclinical models to assess the therapeutic potential of new drug candidates for bladder cancer. Semin Oncol 2012; 39:534-42. [PMID: 23040250 DOI: 10.1053/j.seminoncol.2012.08.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
The purpose of this review is to demonstrate a successful use of preclinical models of bladder cancer to confirm the therapeutic potential of new promising drug candidates. The bladder has long been thought to be an ideal target for investigating therapies. When developing a new antineoplastic pharmaceutical agent, the bladder should be considered for use as an experimental model demonstrating initial proof of concept that if successful can be later assessed in further cancer indications. Non-muscle-invasive bladder carcinoma can be removed by transurethral resection but these cancers tend to recur in most patients. Conventional treatments decrease the recurrence rate but are associated with side effects and frequent failures. Thus, there is an obvious need for the development of highly effective targeted therapies with limited side effects. Accordingly, a double-promoter vector was developed, expressing diphtheria toxin A (DTA) under control of two different regulatory promoter sequences, H19 and IGF2. This vector was then used to transfect and to eradicate tumor cells in bladder cancer models, effectively destroying tumor cells without affecting normal cells. Our studies demonstrate the potential efficacy of the therapeutic vector and should be a solid base for future clinical studies. These models illuminate the path for future investigations of new drug candidates for bladder cancer.
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Affiliation(s)
- Doron Amit
- Department of Biological Chemistry, Hebrew University of Jerusalem, Jerusalem, Israel.
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Kiriluk KJ, Prasad SM, Patel AR, Steinberg GD, Smith ND. Bladder cancer risk from occupational and environmental exposures. Urol Oncol 2012; 30:199-211. [DOI: 10.1016/j.urolonc.2011.10.010] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2011] [Revised: 10/21/2011] [Accepted: 10/23/2011] [Indexed: 12/20/2022]
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Cassidy LD, Marsh GM, Talbott EO, Kelsey SF. Initial and continued adherence with bladder cancer screening in an occupationally exposed cohort. J Occup Environ Med 2011; 53:455-60. [PMID: 21407093 DOI: 10.1097/jom.0b013e3182135841] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE To identify significant predictors of initial and repeated adherence with bladder cancer screening in a high-risk occupationally exposed cohort. METHODS We analyzed longitudinal (13 years) health survey data and a cross-sectional behavioral health survey from the Drake Health Registry Study. Construct validity of the behavioral health survey scales was evaluated using factor analysis. Initial compliance and repeated adherence were examined in separate logistic regression models. RESULTS "Barriers to screening" and "social influence" were associated with initial participation. Lower or no alcohol consumption, comorbidities, worry that screening would find bladder cancer, and ease of arranging schedules were associated with continued adherence. CONCLUSIONS Factors affecting adherence with bladder cancer screening change for initial participation and for continued adherence. To enhance overall adherence, specific strategies should be implemented when initiating a screening program and revised accordingly over time.
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Abstract
Childhood leukemia is the most common cancer among children, representing 31% of all cancer cases occurring in children younger than the age of 15 years in the USA. There are only few known risk factors of childhood leukemia (sex, age, race, exposure to ionizing radiation, and certain congenital diseases, such as Down syndrome and neurofibromatosis), which account for only 10% of the childhood leukemia cases. Several lines of evidence suggest that childhood leukemia may be more due to environmental rather than genetic factors, although genes may play modifying roles. Human and animal studies showed that the development of childhood leukemia is a two-step process that requires a prenatal initiating event(s) plus a postnatal promoting event(s). Despite a substantial public health effort to reduce cigarette smoking, a large proportion of the US and world population still smoke. Tobacco smoke contains at least 60 known human or animal carcinogens, with the major chemical classes being volatile hydrocarbons, aldehydes, aromatic amines, polycyclic aromatic hydrocarbons, and nitrosamines; among these chemicals, only benzene is an established leukemogen, although other chemicals in the tobacco could interact with one another in a complex way to jointly attain a significant carcinogenic effect on the development of leukemia. Although tobacco smoke is an established risk factor for adult myeloid leukemia, the studies of association between parental smoking and childhood leukemia have produced inconsistent results. The majority of the studies on maternal smoking and childhood leukemia did not find a significant positive association and some even reported an inverse association. In contrast to studies of maternal smoking, studies of paternal smoking and childhood leukemia reported more positive associations but only by less than half of the studies. Future directions to be considered for improving the study of parental smoking and childhood leukemia are: 1) consider all sources of benzene exposure in addition to smoking, including occupational exposure and traffic exhausts; 2) childhood leukemia is a heterogeneous disease and epidemiologic studies of childhood leukemia can be greatly improved by grouping childhood leukemia into more homogeneous groups by molecular techniques (e.g., structural and numerical chromosomal changes); and 3) assess gene-environment interaction. It is hoped that through the continual effort, more will be uncovered regarding the causes of childhood leukemia. In the meantime, more effort should be spent on educating the parents to quit smoking, because parental smoking is known to affect many childhood diseases (e.g., asthma, respiratory tract infection, and otitis media) that are much more prevalent than childhood leukemia.
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Affiliation(s)
- Jeffrey S Chang
- Department of Epidemiology and Biostatistics, University of California, San Francisco, CA, USA
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Olfert SM, Felknor SA, Delclos GL. An Updated Review of the Literature: Risk Factors for Bladder Cancer with Focus on Occupational Exposures. South Med J 2006; 99:1256-63. [PMID: 17195421 DOI: 10.1097/01.smj.0000247266.10393.72] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Workplace exposures account for 5 to 25% of all bladder cancer cases. A critical review of the literature between 1938 and 2004 was performed, with a focus on occupational exposures. Occupational exposure to bladder carcinogens, particularly to beta-naphthylamine occur in a number of industries, including aromatic amine manufacture, rubber and cable manufacture, and dyestuff manufacture and use. Risks to workers in a number of new occupations and industries are reviewed. Nonoccupational risk factors that are known or at one time have been thought to increase the risk of bladder cancer are also discussed.
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Affiliation(s)
- Sandra M Olfert
- University of Texas School of Public Health at Houston, Southwest Center for Occupational and Environmental Health, Houston, TX 77030, USA
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