1. T Cell Dysregulation in Non-silicotic Silica Exposed Workers: A Step Toward Immune Tolerance Breakdown
- Author
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Benoit Brilland, Céline Beauvillain, Gery Mazurkiewicz, Pierre Rucay, Yves Roquelaure, Julie Tabiasco, Emeline Vinatier, Jérémie Riou, Pascale Jeannin, Gilles Renier, Jean-François Subra, and Jean-François Augusto
- Subjects
crystalline silica ,occupational diseases ,auto-immune diseases ,activated T cells ,regulatory T cells ,auto-antibodies ,Immunologic diseases. Allergy ,RC581-607 - Abstract
Background: Chronic silica exposure can lead to silicosis, complicated or not by autoimmune diseases (AID). The pathophysiology of silica-induced AID remains not fully understood, especially immune mechanisms that may develop in patients without yet established silicosis. We conducted a prospective clinical study to analyze the impact of crystalline silica (CS) on T cell phenotype and regulatory T cells (Tregs) frequency, as well as on auto-antibodies development in non-silicotic workers exposed to CS.Methods: Workers with moderate to high exposure level to CS and aged between 30 and 60 years-old were considered for inclusion. Peripheral blood mononuclear cells were analyzed by flow cytometry. Auto-antibodies were screened in serum by immunofluorescence. Blood from 42 and 45 healthy subjects (HC) was used as control for T cell phenotype and serum analyses, respectively.Results: Among the 63 included workers exposed to CS, 55 had full data available and were analyzed. Ten were exposed to CS for
- Published
- 2019
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