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Related Experiment Videos

Reducing exposure to laboratory animal allergens.

Isabelle B Schweitzer1, Ellen Smith, David J Harrison

  • 1The Jackson Laboratory, Bar Harbor, Maine 04609, USA.

Comparative Medicine
|December 6, 2003
PubMed
Summary

Reducing laboratory animal allergy exposure is crucial. Ventilated cages under negative pressure and changing tables significantly lower mouse allergen (Mus m 1) levels, improving animal caretaker health.

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Area of Science:

  • Occupational Health
  • Laboratory Animal Science
  • Allergen Exposure Control

Background:

  • Laboratory animal allergy poses significant health risks to personnel.
  • Mouse allergen (Mus m 1) is a primary cause of laboratory animal allergy.
  • Effective strategies are needed to reduce airborne allergen concentrations in animal facilities.

Purpose of the Study:

  • To evaluate the efficacy of different housing and cleaning strategies in reducing ambient mouse allergen levels.
  • To assess the correlation between ambient allergen concentrations and reported allergy symptoms in animal caretakers.

Main Methods:

  • Measurement of ambient Mus m 1 concentrations under various housing conditions: conventional caging, ventilated cages (negative and positive pressure), and ventilated changing tables.

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  • Facility-wide survey of Mus m 1 concentrations across different areas.
  • Correlation analysis between allergen levels and reported allergy symptoms among animal caretakers.

    • Main Results:

    • Ventilated cages under negative pressure combined with ventilated changing tables reduced ambient Mus m 1 by tenfold compared to conventional methods.
    • Positively pressurized cages and increased cleaning frequency did not significantly reduce allergen levels.
    • A significant positive correlation was observed between ambient Mus m 1 concentrations and the percentage of caretakers reporting allergy symptoms.

    Conclusions:

    • Existing technologies, specifically negative pressure ventilated caging and changing tables, are effective in substantially reducing laboratory animal allergen exposure.
    • Implementing these strategies can significantly improve the health and well-being of animal caretakers by lowering allergen levels.