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J Allergy Clin Immunol. 1996 Feb;97(2):689-91.

Sequential determinations of Blomia tropicalis allergens in mattress and floor dust samples in a tropical city.

Author information

  • 1Institute of Immunological Research, University of Cartagena, Columbia.

Abstract

BACKGROUND:

The mite species Blomia tropicalis is commonly found in tropical and subtropical regions, and it is an important source of allergen in the city of Cartagena, Columbia.

AIM:

The study was designed to determine seasonal allergen levels of B. tropicalis in homes of patients with asthma and mite allergy.

METHODS:

Dust samples from mattresses and floors in 20 homes were collected on a monthly basis for 1 year. Outdoor temperature, relative humidity, and rainfall were recorded. RAST inhibition was performed on extracts of dust samples. Allergen levels were compared with variations in climate.

RESULTS:

B. tropicalis allergens were detected in all mattress samples. More than 50% RAST inhibition was detected in 30% of mattress samples and in 4.3% of floor samples, reflecting a high concentration of allergen. Significant correlations were only found between allergen levels and absolute humidity.

CONCLUSION:

Levels of B. tropicalis allergen fluctuated minimally in Cartagena, Colombia.

PMID:
8621855
[PubMed - indexed for MEDLINE]
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