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首页> 外文期刊>Occupational and environmental medicine >Carving of non-asbestiform tremolite and the risk of lung cancer: A follow-up mortality study in a historical nephrite processing cohort
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Carving of non-asbestiform tremolite and the risk of lung cancer: A follow-up mortality study in a historical nephrite processing cohort

机译：非石棉透闪石的雕刻和患肺癌的风险：在一个历史上的软玉加工人群中的死亡率追踪研究

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Objectives The health risks associated with exposure to non-asbestiform asbestos minerals, including nephrite, are unclear. In 1965 nephrite processing began in the town of Fengtian in Taiwan, and the majority of inhabitants were involved in the industry from 1970 until 1980. The objectives of this study were to examine lung cancer deaths and assess the carcinogenic effects of nephrite carving. Methods We studied mortality due to lung cancer (ICD-9 code 162 for cancers of the trachea, bronchus and lung) from 1979 to 2011. We calculated the standardised mortality ratio (SMR) for lung cancer using the age- and sex-specific cancer mortality rates in eastern Taiwan as the standard rates. Air samples, bulk samples and a surface sample were analysed. Results Nephrite is a non-asbestiform asbestos mineral composed of microcrystalline tremolite. During nephrite processing, in personal air samples the average concentration of elongated mineral particles with the morphological characteristics of asbestos fibres was 1.4 f/cm3, with rough grinding generating the highest concentrations (4.7 f/cm3). Transmission electron microscopy (TEM) confirmed that the air samples contained intact asbestiform tremolite fibres. The ambient air samples and the wipe sample indicated paraoccupational contamination. The crude mortality rates for lung cancer were higher in Fengtian than in Taiwan for all age groups and both genders. The SMR for lung cancer was 1.28 (95% CI 1.12 to 1.45). Conclusions Nephrite carving may increase the risk of lung cancer. Appropriate medical monitoring is warranted for workers who are exposed to similar materials.
机译：目的目前尚不清楚与非石棉石棉矿物质（包括软玉）的接触所带来的健康风险。 1965年，台湾的奉天镇开始进行软玉的加工，从1970年到1980年，大多数居民都参与了该行业的研究。本研究的目的是检查肺癌的死亡并评估软玉雕刻的致癌作用。方法我们研究了1979年至2011年因肺癌（气管，支气管和肺癌的癌症，ICD-9代码162）引起的死亡率。我们使用了按年龄和性别区分的癌症，计算了肺癌的标准化死亡率（SMR）。台湾东部地区的死亡率为标准率。分析空气样品，散装样品和表面样品。结果软玉是一种由微晶透闪石组成的非石棉石棉矿物。在软玉加工期间，在个人空气样品中，具有石棉纤维形态特征的细长矿物颗粒的平均浓度为1.4 f / cm3，粗磨产生的最高浓度为（4.7f / cm3）。透射电子显微镜（TEM）证实空气样品中含有完整的石棉透闪石纤维。环境空气样品和抹布样品表明存在职业污染。在所有年龄段和性别中，奉天市的肺癌粗死亡率均高于台湾。肺癌的SMR为1.28（95％CI为1.12至1.45）。结论软玉雕刻可能会增加患肺癌的风险。对于暴露于类似材料的工人，应进行适当的医疗监控。

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