Occupational Asthma Reference

Munoz X, Gomez-Olles S, Cruz MJ, Morell F, Occupational asthma related to mouse allergen exposure and rhinoconjunctivitis due to collagenase inhalation in a laboratory technician, Respiration, 2007;74:467-470,

Keywords: collagenase, IgE, Spain, Barcelona, cr, challenge, mouse, laboratory animal, rhinitis,

Known Authors

Maria Jesus Cruz, Barcelona Maria Jesus Cruz

Xavier Munoz, Barcelona Xavier Munoz

Ferran Morell, Vall d'Hebron Hospital, Barcelona Ferran Morell

Susana Gomez-Olles, Barcelona Susana Gomez-Olles

Susana Gomez-Olles, Barcelona Susana Gomez-Olles

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We describe the case of a 27-year-old patient working in a research laboratory, who developed occupational asthma to mouse proteins and presented symptoms of rhinoconjunctivitis caused by manipulation of collagenase. Specific inhalation challenge confirmed the diagnosis of occupational asthma to mouse proteins, whereas specific challenge with collagenase only evoked symptoms of rhinitis and conjunctivitis. SDS-PAGE and Western blot analysis for collagenase showed that the patient's IgE antibodies bound specifically to a protein with a molecular weight of 92 kDa. Hence, this was an unusual case of double sensitization. The sensitization to collagenase presented in this report may represent a new occupational disease in technicians working in medical or research laboratories.

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