International Journal of Cancer
International Journal of Cancer
5 years ago

Hand-spinning chrysotile exposure and risk of malignant mesothelioma: A case-control study in Southeastern China

Tianhui Chen, Jianlin Lou, Min Yu, Riping Chen, Hailing Xia, Lingfang Feng, Xing Zhang, Kenji Morinaga, Chao Miao, Wei Wu, Zhibin Gao, Shibo Ying, Junqiang Chen, Zhaoqiang Jiang, Xianglei He
While chrysotile has been commonly used by Chinese textile industry for many years, investigations on the association of chrysotile exposure with risk of mesothelioma in China are scarce. We conducted a case-control study in a county located at Southeastern China, including 46 cases and 230 individually matched controls. A semi-quantitative method based on experts' assessment was used for evaluating hand-spinning chrysotile exposure. Conditional logistic regression models were used to assess the association of asbestos exposure with risk of mesothelioma. We found that hand-spinning chrysotile exposure was associated with significantly elevated risk of mesothelioma, reaching OR =10 [95% CIs): 1.4-65] for possible exposure and 64 (12-328) for definite exposure. Our data suggested a dose-response relationship of chrysotile exposure duration with risk of mesothelioma, reaching 28 (6-134) for <6 years, 51 (11-247) for 7-17 years, and 56 (9-351) for ≥18 years. A dose-response relationship of cumulative exposure index (CEI) with risk of mesothelioma was found, reaching 28 (6-137) for CEI at 0-0.5 f/ml-years, 36 (7-184) for CEI at 0.5-28.6 f/ml-years, and 79 (14-451) for CEI >28.6 f/ml-years. We found a dose-response relationship of chrysotile exposure duration and CEI with risk of mesothelioma in Southeastern China, adding valuable information on health hazards of chrysotile exposure in China where chrysotile is still used nationwide. This article is protected by copyright. All rights reserved.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/ijc.31077

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