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  • Title: Occupational asthma induced by fish exposure.
    Author: Añibarro B, Feijoo L, de Las Cuevas N, Seoane FJ.
    Journal: Occup Med (Lond); 2023 Dec 30; 73(9):581-583. PubMed ID: 38016183.
    Abstract:
    Occupational asthma triggered by inhaling fish-derived aerosols is estimated to affect 2-8% of exposed individuals. This primarily affects workers in the fish processing industry. Fishmongers, rarely experience this issue, as recent research found no significant difference in asthma rates compared to a control group. We report the case of a fishmonger who presented with a 1-year history of rhinoconjunctivitis and asthma. The patient attributed these symptoms to his occupational exposure within the fish market environment, which worsened in the cold storage warehouse. Symptoms improved during holidays. Diagnosis involved skin-prick tests, sIgE (ImmunoCAP-specific IgE) measurements, and bronchial challenge tests, confirming occupational asthma from fish bioaerosol exposure. Parvalbumins, common fish proteins, share structural similarities, leading to cross-reactivity in fish allergy sufferers. In this case, sensitivity to rGad c1 (cod parvalbumin) was identified as the primary trigger for the patient's asthma, and responsible for sensitizations observed across various tested fish species.
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