Measurement of allergens associated with dust mite allergy. II. Concentrations of airborne mite allergens (Der I and Der II) in the house.
Assays of mite allergens (Der p I, Der f I and Der II) in the air of houses became feasible with the use of a low-noise air sampler and a sensitive radioimmunoassay described previously. The levels of the airborne allergens Der I (Der p I + Der f I) and Der II in the living room of 10 houses during usual domestic life were very low, 29.5 and 6.3 pg/m3, respectively, with a Der I: Der II ratio of 4.7:1. At the time of bedmaking, they greatly increased, about 1,000-fold, to 30,900 and 12,600 pg/m3, respectively, with a Der I: Der II ratio of 2.5:1. The amounts of Der I and Der II in the floor dust of the living room were 2,040 and 2,690 ng/g of fine dust, respectively, with a Der I: Der II ratio of 0.8:1. Der I seemed more prone to become airborne than Der II.
Sakaguchi
M
M
Department of Microbiology, Institute of Public Health, Tokyo, Japan.
Inouye
S
S
Yasueda
H
H
Irie
T
T
Yoshizawa
S
S
Shida
T
T
D000388:Air / Q000032:analysis*; D000485:Allergens; D000818:Animals; D039741:Antigens, Dermatophagoides; D004391:Dust / Q000032:analysis; D008925:Mites / Q000276:immunology*
D000485:Allergens; D039741:Antigens, Dermatophagoides; D004391:Dust