title: House dust mite allergen levels in Chiang Mai homes.
abstract: The quantitative assays for house dust mite (HDM) allergens provide a valid index of exposure and can be used for risk evaluation. We assessed group I HDM allergen levels in mattress and living room floor dust from 35 Chiang Mai homes and identified factors associated with high allergen levels. One-third of mattress and living room floor dust had group I HDM allergen levels of between 2-10 microg/g. Two-thirds of mattress dust and a small amount of living room floor dust had group I HDM allergen levels of over 10 microg/g. The geometric means of Der p I, Der f I and total group I allergens in mattress and living room floor dust were 8.61, 2.88, and 15.81 microg/g and 1.61, 0.27 and 2.43 microg/g, respectively. Mattresses made of kapok and rugs kept in the living room were associated with high group I allergen levels.
authors.affiliation: Department of Pediatrics, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand.
authors.forename: Muthita
authors.initials: M
authors.lastname: Trakultivakorn
authors.forename: Supaporn
authors.initials: S
authors.lastname: Krudtong
mesh_terms: D000485:Allergens / Q000009:adverse effects / Q000032:analysis* / Q000276:immunology; D039741:Antigens, Dermatophagoides / Q000009:adverse effects / Q000032:analysis / Q000276:immunology; D060829:Arthropod Proteins; D001249:Asthma / Q000276:immunology; D001512:Bedding and Linens / Q000469:parasitology; D035164:Ceiba; D002648:Child; D003430:Cross-Sectional Studies; D003546:Cysteine Endopeptidases; D004391:Dust / Q000032:analysis; D004781:Environmental Exposure / Q000032:analysis*; D005430:Floors and Floorcoverings; D006801:Humans; D039981:Pyroglyphidae / Q000276:immunology*; D012221:Rhinitis, Allergic, Perennial / Q000276:immunology; D012306:Risk; D013785:Thailand
chemical_list: D000485:Allergens; D039741:Antigens, Dermatophagoides; D060829:Arthropod Proteins; D004391:Dust; D003546:Cysteine Endopeptidases; C451159:Dermatophagoides farinae antigen f 1; C451162:Dermatophagoides pteronyssinus antigen p 1