Risk of bile duct cancer among printing workers exposed to 1,2‐dichloropropane and/or dichloromethane
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- Sobue Tomotaka
- Department of Environmental Medicine and Population Sciences, Graduate School of Medicine, Osaka University
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- Utada Mai
- Department of Mathematical Health Science, Graduate School of Medicine, Osaka University
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- Makiuchi Takeshi
- Department of Environmental Medicine and Population Sciences, Graduate School of Medicine, Osaka University
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- Ohno Yuko
- Department of Mathematical Health Science, Graduate School of Medicine, Osaka University
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- Uehara Shinichiro
- Department of Preventive Medicine and Environmental Health, Graduate School of Medicine, Osaka City University
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- Hayashi Tomoshige
- Department of Preventive Medicine and Environmental Health, Graduate School of Medicine, Osaka City University
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- Sato Kyoko Kogawa
- Department of Preventive Medicine and Environmental Health, Graduate School of Medicine, Osaka City University
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- Endo Ginji
- Department of Preventive Medicine and Environmental Health, Graduate School of Medicine, Osaka City University
書誌事項
- タイトル別名
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- Risk of bile duct cancer among printing workers exposed to 1,2-dichloropropane and/or dichloromethane
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Objectives: We conducted a retrospective cohort study to examine the risk of bile duct cancer among current and former workers in the offset color proof printing department at a printing company in Osaka, Japan. Methods: Standardized incidence ratios (SIRs) between January 1, 1985, and December 31, 2012, were estimated for the cumulative years of exposure to two chemicals, dichloromethane (DCM) and 1,2-dichloropropane (1,2-DCP), using the national incidence level as a reference. In addition, we examined risk patterns by the calendar year in which observation started. Results: Among 106 workers with a total of 1,452.4 person-years of exposure, 17 bile duct cancer cases were observed, resulting in an estimated overall SIR of 1,132.5 (95% confidence interval (CI): 659.7–1,813.2). The SIR was 1,319.9 (95% CI: 658.9–2,361.7) for those who were exposed to both DCM and 1,2-DCP, and it was 1,002.8 (95% CI: 368.0–2,182.8) for those exposed to 1,2-DCP only. SIRs tended to increase according to years of exposure to 1,2-DCP but not DCM when a 5-year lag time was assumed. The SIRs were higher for the cohorts in which observation started in 1993–2000, particularly in cohorts in which it started in 1996–1999, compared with those in which it started before or after 1993–2000. Conclusions: We observed an extraordinarily high risk of bile duct cancer among the offset color proof printing workers. Elevated risk may be related to cumulative exposure to 1,2-DCP, but there remains some possibility that a portion of the risk is due to other unidentified substances.(J Occup Health 2015; 57: 230–236)
収録刊行物
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- journal of Occupational Health
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journal of Occupational Health 57 (3), 230-236, 2015
公益社団法人 日本産業衛生学会
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詳細情報 詳細情報について
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- CRID
- 1390001204454279168
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- NII論文ID
- 130005088076
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- NII書誌ID
- AA11090645
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- ISSN
- 13489585
- 13419145
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- NDL書誌ID
- 026424151
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- PubMed
- 25739336
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- 使用不可