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Allergic sensitization to domestic mites in Corpus Christi, Texas

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Corpus Christi, TX, is a Gulf Coast city with high humidity levels year-round. There is little available data on mite species in mattress dust, allergen levels, and sensitization to different mite species in allergic patients. This study was designed to determine skin sensitization and specific serum IgE to Dermatophagoides spp. and Blomia tropicalis in patients attending an allergy clinic and to explore the mite fauna and allergen content of their mattresses. Skin-prick tests to Dermatophagoides spp. and B. tropicalis along with mite-specific IgE in the serum by enzyme-linked immunosorbent assay (ELISA) and ImmunoCAP tests were performed in allergic patients attending an outpatient allergy clinic in Corpus Christi, TX. Mite species and allergen levels were determined in mattress dust. Forty-five consecutive patients were evaluated; 10 patients had positive skin tests to Dermatophagoides pteronyssinus and B. tropicalis, 32 patients reacted only to D. pteronyssinus, and 3 patients reacted exclusively to B. tropicalis. Increased titers of D. pteronyssinus- and D. farinae-specific IgE were present and B. tropicalis-specific IgE titers were lower. Significant amounts of mites were observed in 79.5% of dust samples, with a predominance of D. pteronyssinus and D. farinae. Other mite species, such as B. tropicalis, Euroglyphus maynei, Tarsonemus spp., Tyrophagus putrescientiae, Cheyletus spp., and Oribatidae were also observed. Greater levels of Der p and Der f 1 than of Blo t 5 were present in the mattresses. D. pteronyssinus and D. farinae are the prevalent mite species in houses of allergic patients from Corpus Christi, TX. Other mite species are also found.
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Keywords: Allergic rhinitis; Blomia tropicalis; Corpus Christi; Dermatophagoides farinae; Dermatophagoides pteronyssinus; IgE; allergic sensitization; asthma; atopic dermatitis; dust mite; mites

Document Type: Research Article

Affiliations: Corpus Christi Allergy and Asthma Center, Corpus Christi, Texas

Publication date: 01 March 2009

More about this publication?
  • Allergy and Asthma Proceedings is a peer reviewed publication dedicated to distributing timely scientific research regarding advancements in the knowledge and practice of allergy, asthma and immunology. Its primary readership consists of allergists and pulmonologists.

    The goal of the Proceedings is to publish articles with a predominantly clinical focus which directly impact quality of care for patients with allergic disease and asthma.

    Featured topics include asthma, rhinitis, sinusitis, food allergies, allergic skin diseases, diagnostic techniques, allergens, and treatment modalities. Published material includes peer-reviewed original research, clinical trials and review articles.

    Articles marked "F" offer free full text for personal noncommercial use only.

    The journal is indexed in Thomson Reuters Web of Science and Science Citation Index Expanded, plus the National Library of Medicine's PubMed service.
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