BACKGROUND:Cases of malignant mesothelioma (MM) in the non-asbestos textile industry have recently been described, but asbestos exposure in spinning and looming has seldom been reported. Nevertheless, on a national level the Italian Mesothelioma Registry (Re.Na.M) contains numerous cases of MM with past non-asbestos textile work but classified as "unknown" exposure due to poor information. OBJECTIVES:The aim of this research was to investigate possible past occupational exposure to asbestos in this specific industrial sector. METHODS:The MM cases were collected from the Mesothelioma Registry of Brescia. Work histories were obtained via a standardized questionnaire. Investigations were conducted in textile machinery manufacturing plants in order to collect information regarding the possible use of asbestos parts; at the same time, the use of asbestos friction materials and the use of sprayed asbestos for noise abatement purposes or thermal insulation was checked in the cotton industry by interviewing the management of two companies where a cluster of MM was observed. RESULTS:The Mesothelioma Registry of Brescia retrieved and collected 15 MM cases with past work in the cotton spinning industry, 4 of them employed in the same company. Further search of asbestos use gave positive results as the use of friction materials has been widespread since the fifties, while sprayed asbestos was not found anywhere in the cotton industry. On the other hand, half of the cases were employed during the thirties and forties, when friction materials appear to have been asbestos-free. Therefore the other hypothesis of exposure could be direct manufacture of asbestos yarn. CONCLUSION:The results of this investigation indicate the attribution, at least, of possible asbestos exposure"for those cases employed in textile industries since the fifties, according to the Re.Na.M guidelines; for those cases employed before that period the same classification can be attributed on an epidemiological basis. Previous work periods need further investigation in order to demonstrate the circumstances of the occupational asbestos exposure, given the heterogeneity of work processes and machinery characteristic of this industrial sector.

译文

背景:最近已描述了非石棉纺织工业中的恶性间皮瘤(MM)病例,但很少有在纺纱和织机中接触石棉的报道。然而,在全国范围内,意大利间皮瘤登记处(Re.Na.M)包含许多具有过去非石棉纺织工作的MM病例,但由于信息不充分,被分类为“未知”暴露。
目的:本研究的目的是调查该特定工业部门过去可能在职业上接触石棉的情况。
方法:MM病例是从布雷西亚间皮瘤登记处收集的。工作历史是通过标准化问卷获得的。在纺织机械制造厂进行了调查,以收集有关可能使用石棉零件的信息;同时,通过与两家公司的管理层进行了访谈,调查了棉花行业中石棉摩擦材料的使用以及为减少噪音或隔热而使用喷涂石棉的情况,并与两家公司的管理层进行了访谈。
结果:布雷西亚的间皮瘤登记处检索并收集了15例MM案例,这些案例在棉花纺纱行业中曾有过工作,其中4例是在同一家公司工作的。五十年代以来,对摩擦材料的使用一直很广泛,因此对石棉用途的进一步研究获得了积极的结果,而在棉纺行业中却找不到喷涂的石棉。另一方面,一半的情况是在三十年代和四十年代使用的,当时摩擦材料似乎是无石棉的。因此,暴露的另一个假设可能是直接制造石棉纱。
结论:这项调查的结果表明,根据Re.Na.M准则,至少从50年代起对纺织行业雇用的那些案件应归因于石棉;对于在此期间之前受雇的那些案件,应进行相同的分类考虑到该工业部门工作流程和机械特性的异质性,以前的工作时间需要进一步调查,以证明职业石棉暴露的情况。

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