Background: The current scientific debate on silica and cancer has often led to overlooking the persisting risk of lung fibrosis from crystalline silica.
Case Report: During 2000, when 54 years old, a funeral arts' craftsman began to suffer from persistent, hacking cough; radiography and high resolution computed tomography (HRCT) showed thin sub-pleural nodulations of the lungs, mainly in the upper fields. Two years later, increasing dyspnoea appeared and HRCT revealed vast consolidative opacities in both upper fields. Bronchial biopsies documented lung fibrosis and silicosis was diagnosed. In 2003, large amounts of crystalline silica were found in a stone used by the patient and in the dust deposited inside his workshop. In 2004 the patient abandoned his work. He died in 2008 from respiratory failure and infectious complications.
Discussion: Histology is uncommonly available for the differential diagnosis of lung fibrosis so that, when imaging is not accompanied by appropriate recollection and assessment of occupational histories, new cases of silicosis may easily remain unrecognized. After some years from its onset, this fatal silicosis case showed a relatively rapid progression, that continued after exposure cessation. The disease derived from working conditions that the patient and his only colleague, both craftsmen operating in their own workshop, didn't recognize as hazardous prior to an external intervention.
Conclusions: Severe and fatal silicosis is still present in Italy, even in unusual occupational contexts. At present the disease may be more difficult to identify than in the past; collaboration between clinicians, radiologists and occupational physicians is strongly needed. Ad hoc industrial hygiene surveys give a very relevant support to diagnosis and prevention of silicosis.
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AME Case Rep
October 2024
Center for Asbestos-Related Diseases, Toyama Rosai Hospital, Toyama, Japan.
Background: The underlying pathophysiology of some occupational diseases such as silicosis involves autoantibodies. An autoantibody, antineutrophil cytoplasmic antibody (ANCA), has been recently reported and is known to be elevated in diseases such as vasculitis; therefore, the disease is currently known as ANCA-associated vasculitis. The risk of ANCA-associated vasculitis is known to be 25 times higher in patients with silicosis than in those without any occupational disease.
View Article and Find Full Text PDFAdv Sci (Weinh)
December 2024
Department of Occupational Medical and Environmental Health, Key Laboratory of Modern Toxicology of Ministry of Education, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China.
Silicosis is a fatal occupational pulmonary disease that is characterized by irreversible replacement of lung parenchyma by aberrant Exracellular matrix (ECM). Metabolic reprogramming is a crucial mechanism for fibrosis. However, how the metabolic rewiring shifts the ECM homeostasis toward overaccumulation remains unclear.
View Article and Find Full Text PDFEcotoxicol Environ Saf
December 2024
Department of Occupational Medical and Environmental Health, Key Laboratory of Modern Toxicology of Ministry of Education, School of Public Health, Nanjing Medical University, Nanjing 211166, China; Department of Public Health, Kangda College of Nanjing Medical University, Lianyungang, 320700, China. Electronic address:
Silicosis is a disease caused by prolonged exposure to silica dust. It is the most typical, rapidly progressive, and fatal form of pneumoconiosis. Currently, there is no specific medication available for the treatment of silicosis.
View Article and Find Full Text PDFInt J Mol Sci
November 2024
School of Public Health, North China University of Science and Technology, Tangshan 063210, China.
Silicosis is one of the most prevalent and fatal occupational diseases worldwide, with unsatisfactory clinical outcomes. This study aimed to investigate the therapeutic effect and related molecular mechanisms of how mesenchymal stem cell (MSC)-secreted exosomes alleviate SiO-induced pulmonary fibrosis. miR-99a-5p was significantly downregulated in silicosis models via high-throughput miRNA screening, and was overlapped with miRNAs in exosomes from MSCs.
View Article and Find Full Text PDFPLoS One
October 2024
Institute of Information Technology, Jahangirnagar University, Dhaka, Bangladesh.
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