Please use this identifier to cite or link to this item:
Title: Silica exposure and disease in semi-precious stone craftsmen, Minas Gerais, Brazil.
Authors: Carneiro, Ana Paula Scalia
Braz, Nayara Felicidade Tomaz
Algranti, Eduardo
Bezerra, Olívia Maria de Paula Alves
Araújo, Natália Pereira da Silva
Amaral, Lênio S.
Edmé, Jean Louis
Sobaszek, Annie
Chérot-Kornobis, Nathalie
Keywords: Silicosis
Occupational exposure
Issue Date: 2017
Citation: CARNEIRO, A. P. S. et al. Silica exposure and disease in semi-precious stone craftsmen, Minas Gerais, Brazil. American Journal of Industrial Medicine, v. 60, p. 239-247, 2017. Disponível em: <>. Acesso em: 29 ago. 2017.
Abstract: Background Brazil is an exporter of precious stones and craftsmen often work in poor conditions. We assessed silica-related diseases among crystal craftsmen and the complexity of its control. Methods Case-series including 118 subjects evaluated from 2006 to 2015, based on medical interviews, chest X-rays, spirometry, and respirable silica samples. Results Median age and length of exposure were 32 and 13 years, respectively. Silicosis, with 1/0 as a threshold, was diagnosed radiologically in 57 individuals (48.3%). Respirable silica concentrations were 0.9–29.3 times greater than the Brazilian occupational exposure limit. A Receiver Operating Characteristic (ROC) curve with the same diagnosis threshold showed best discrimination at a cut point of 12.5 years of exposure, corresponding to 4.85 mg-y/m3 of cumulative silica exposure. There was a significant decline in FEV1 across radiological and cumulative silica exposure categories. Eleven individuals (9.3%) had mycobacterial diseases at baseline or follow-up. Conclusion Crystal craftsmen continue to suffer from silicosis, lung function impairment, comorbidity, and death due to silicosis. To date collective protection in some work sheds has not diminished silica levels. Long-term follow-up is needed to evaluate further improvements in preventive measures.
ISSN: 1097-0274
Appears in Collections:DEMSC - Artigos publicados em periódicos

Files in This Item:
File Description SizeFormat 
  Restricted Access
569,48 kBAdobe PDFView/Open

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.