A comparison of subject room dust with home vacuum dust for evaluation of dust-borne aeroallergens.
Ann Allergy Asthma Immunol 2013;
110:375-9. [PMID:
23622010 DOI:
10.1016/j.anai.2013.02.010]
[Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2013] [Revised: 02/05/2013] [Accepted: 02/10/2013] [Indexed: 11/24/2022]
Abstract
BACKGROUND
Assessment of indoor allergen is valuable in exposure research and evaluation of allergic individuals. Collection methods range from grab vacuum samples to filtration devices located in the breathing range of an individual. For practical purposes, many research studies use analysis of collected house dust to evaluate allergen reservoirs.
OBJECTIVE
To test the hypothesis that house dust collected from the family vacuum is equivalent to house dust collected by a technician following standard protocol.
METHODS
Homes from a healthy homes demonstration project (n = 41) were sampled using a specific Department of Housing and Urban Development-suggested protocol in the bedroom of the child with asthma and a simple grab procedure from the family vacuum. Samples were evaluated for the presence of 5 allergens, Bla g2, Can f1, Der f1, and Der p1 combined as total mite, Fel d1, and Mus m1. Samples were also evaluated for total antigenic protein from 4 fungal taxa, including Alternaria, Aspergillus, Cladosporium, and Penicillium.
RESULTS
All of the allergens and antigens tested showed good correlation between the 2 collection methods. Fungal antigens ranged up to 92,651 nanograms per gram of dust for Aspergillus, and allergens ranged up to 17,928 nanograms per gram of dust for Can f1. The best correlation was for Cladosporium (r = 0.91), and the weakest was for dust mite (r = 0.34).
CONCLUSION
Allergens and antigens tested from samples collected by protocol and by grab sampling from the home vacuum were highly positively correlated. Grab samples taken from the family vacuum may be a good surrogate for evaluating home allergen exposure.
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