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House dust mite, cat, and cockroach allergen concentrations in daycare centers in Tampa, Florida.
Ann Allergy Asthma Immunol 2001; 87(3):196-200AA

Abstract

BACKGROUND

Allergen exposure in early childhood is a risk factor for sensitization and the development of asthma. Studies performed in Europe, New Zealand, and Singapore indicated the presence of indoor allergens in childcare centers and schools. However, the importance of indoor allergens in daycare centers in humid and warm regions of the world is not known.

OBJECTIVE

To measure total mite counts, Der p 1, Der f 1, Fel d 1, and Per a 1 allergens in dust samples and mite allergen airborne concentrations in daycare centers in Tampa, Florida, United States.

METHODS

Twenty daycare centers were surveyed for mite, cat, and cockroach allergens in Tampa, FL. One dust and two air samples (one during the day and one during the night) were collected in each center. Dust samples were extracted and analyzed for mite (Der p 1 and Der f 1), cat (Fel d 1), and cockroach (Per a 1) allergens. Mite airborne allergen concentrations were analyzed by RAST inhibition and expressed in standardized mite allergen units per m3 of air (AU/m3).

RESULTS

Mites were identified in 15 samples, and concentrations ranged from 10 to 1,200 mites/g (298 +/- 355.2). The most prevalent mite species was Dermatophagoides pteronyssinus (Der p 1). Der p 1 and/or Der f 1 were detected in 10 daycare centers. Der p 1 was detected in eight centers and ranged from I to 21.8 microg/g of dust (5.4 +/- 6.9); Der f 1 was detected in 3 centers and ranged from 0.2 to 2.1 microg/g of dust (1.3 +/- 0.9). Per a 1 and Fel d 1 were detected in all centers in small quantities; Per a 1 ranged from 8 to 1,806 ng/g (263.1 +/- 449.7) and Fel d 1 from 0.2 to 120 U/g of dust (16.6 +/- 31.7), respectively. Airborne mite allergen was detected in 18 centers and ranged from 0.01 to 2.7 AU/m3 during the day (0.2 +/- 0.6) and from 0.01 to 0.12 AU/m3 during the night (0.06 +/- 0.03), P = 0.001.

CONCLUSIONS

Mite, cat, and cockroach allergens are present in daycare centers in Tampa, FL. Mite allergen concentrations exceeded levels that have been associated with sensitization and symptoms in allergic subjects in 40% of these centers.

Authors+Show Affiliations

CBF LETI, SA, Madrid, Spain.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

11570614

Citation

Fernández-Caldas, E, et al. "House Dust Mite, Cat, and Cockroach Allergen Concentrations in Daycare Centers in Tampa, Florida." Annals of Allergy, Asthma & Immunology : Official Publication of the American College of Allergy, Asthma, & Immunology, vol. 87, no. 3, 2001, pp. 196-200.
Fernández-Caldas E, Codina R, Ledford DK, et al. House dust mite, cat, and cockroach allergen concentrations in daycare centers in Tampa, Florida. Ann Allergy Asthma Immunol. 2001;87(3):196-200.
Fernández-Caldas, E., Codina, R., Ledford, D. K., Trudeau, W. L., & Lockey, R. F. (2001). House dust mite, cat, and cockroach allergen concentrations in daycare centers in Tampa, Florida. Annals of Allergy, Asthma & Immunology : Official Publication of the American College of Allergy, Asthma, & Immunology, 87(3), pp. 196-200.
Fernández-Caldas E, et al. House Dust Mite, Cat, and Cockroach Allergen Concentrations in Daycare Centers in Tampa, Florida. Ann Allergy Asthma Immunol. 2001;87(3):196-200. PubMed PMID: 11570614.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - House dust mite, cat, and cockroach allergen concentrations in daycare centers in Tampa, Florida. AU - Fernández-Caldas,E, AU - Codina,R, AU - Ledford,D K, AU - Trudeau,W L, AU - Lockey,R F, PY - 2001/9/26/pubmed PY - 2001/10/12/medline PY - 2001/9/26/entrez SP - 196 EP - 200 JF - Annals of allergy, asthma & immunology : official publication of the American College of Allergy, Asthma, & Immunology JO - Ann. Allergy Asthma Immunol. VL - 87 IS - 3 N2 - BACKGROUND: Allergen exposure in early childhood is a risk factor for sensitization and the development of asthma. Studies performed in Europe, New Zealand, and Singapore indicated the presence of indoor allergens in childcare centers and schools. However, the importance of indoor allergens in daycare centers in humid and warm regions of the world is not known. OBJECTIVE: To measure total mite counts, Der p 1, Der f 1, Fel d 1, and Per a 1 allergens in dust samples and mite allergen airborne concentrations in daycare centers in Tampa, Florida, United States. METHODS: Twenty daycare centers were surveyed for mite, cat, and cockroach allergens in Tampa, FL. One dust and two air samples (one during the day and one during the night) were collected in each center. Dust samples were extracted and analyzed for mite (Der p 1 and Der f 1), cat (Fel d 1), and cockroach (Per a 1) allergens. Mite airborne allergen concentrations were analyzed by RAST inhibition and expressed in standardized mite allergen units per m3 of air (AU/m3). RESULTS: Mites were identified in 15 samples, and concentrations ranged from 10 to 1,200 mites/g (298 +/- 355.2). The most prevalent mite species was Dermatophagoides pteronyssinus (Der p 1). Der p 1 and/or Der f 1 were detected in 10 daycare centers. Der p 1 was detected in eight centers and ranged from I to 21.8 microg/g of dust (5.4 +/- 6.9); Der f 1 was detected in 3 centers and ranged from 0.2 to 2.1 microg/g of dust (1.3 +/- 0.9). Per a 1 and Fel d 1 were detected in all centers in small quantities; Per a 1 ranged from 8 to 1,806 ng/g (263.1 +/- 449.7) and Fel d 1 from 0.2 to 120 U/g of dust (16.6 +/- 31.7), respectively. Airborne mite allergen was detected in 18 centers and ranged from 0.01 to 2.7 AU/m3 during the day (0.2 +/- 0.6) and from 0.01 to 0.12 AU/m3 during the night (0.06 +/- 0.03), P = 0.001. CONCLUSIONS: Mite, cat, and cockroach allergens are present in daycare centers in Tampa, FL. Mite allergen concentrations exceeded levels that have been associated with sensitization and symptoms in allergic subjects in 40% of these centers. SN - 1081-1206 UR - https://www.unboundmedicine.com/medline/citation/11570614/House_dust_mite_cat_and_cockroach_allergen_concentrations_in_daycare_centers_in_Tampa_Florida_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S1081-1206(10)62225-9 DB - PRIME DP - Unbound Medicine ER -