ArticleLa Medicina del lavoro2025
Occupational Asthma Due to Subtilisin: The Power of Specific Inhalation Challenge.
Article in La Medicina del lavoro, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
We report the first confirmed case in Italy of occupational asthma caused by subtilisin in a healthcare worker involved in cleaning surgical instruments. The diagnosis was confirmed through a specific inhalation challenge (SIC) performed one year after the last exposure and after stopping inhaled corticosteroid therapy. An immediate reaction was observed after three minutes of exposure to diluted Neogiozym ™, with a 30% decrease in FEV1. This case highlights the diagnostic importance of SIC even for high-molecular-weight (HMW) agents and emphasizes the need to reconsider occupational asthma as a complex, evolving disease influenced by both host and environmental factors. The patient exhibited a Type-2-high phenotype despite negative skin prick tests and normal IgE levels, reinforcing the value of dynamic, multi-marker assessment in occupational endotyping. This case supports the broader use of SIC in occupational settings where allergen-specific IgE testing is limited.
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