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Murine Model of Allergen Induced Asthma
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Occupational asthma induced by fish exposure.

B Añibarro1, L Feijoo1, N de Las Cuevas2

  • 1Allergy Unit, Hospital Universitario Severo Ochoa, Leganés, Madrid, Spain.

Occupational Medicine (Oxford, England)
|November 28, 2023
PubMed
Summary
This summary is machine-generated.

Occupational asthma from fish bioaerosols affects 2-8% of workers. This case study highlights a fishmonger diagnosed with occupational asthma triggered by cod parvalbumin (rGad c1), emphasizing cross-reactivity in fish allergies.

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Area of Science:

  • Allergology
  • Occupational Medicine
  • Pulmonology

Background:

  • Occupational asthma affects 2-8% of individuals exposed to fish-derived aerosols, primarily in the fish processing industry.
  • Fishmongers are generally considered at low risk, with previous studies showing no significant difference in asthma rates compared to controls.

Observation:

  • A fishmonger presented with a year-long history of rhinoconjunctivitis and asthma symptoms.
  • Symptoms were occupationally related, worsening in the fish market's cold storage and improving during holidays.

Findings:

  • Diagnostic tests, including skin-prick tests, specific IgE (ImmunoCAP) measurements, and bronchial challenge tests, confirmed occupational asthma due to fish bioaerosol exposure.
  • The patient demonstrated sensitivity to rGad c1 (cod parvalbumin), a common fish protein known for cross-reactivity.
  • This sensitivity was linked to allergic reactions across multiple fish species.

Implications:

  • This case underscores that fishmongers can develop occupational asthma from fish bioaerosols.
  • Parvalbumin sensitization, particularly to rGad c1, is a key mechanism in fish-induced occupational asthma.
  • Highlights the importance of considering fish bioaerosols as occupational asthma triggers even in seemingly low-risk occupations.