Sensitization to Dermatophagoides siboney, Blomia tropicalis, and other domestic mites in asthmatic patients

AbstractExposure to house dust allergens, mainly from domestic mites, is an important cause of allergic reactions in sensitized asthmatic patients. A total of 63 dust samples were collected from 16 flats in Bytom (south Poland); in each flat a person (age 4–17 years) suffering from bronchial asthma lived with his/her family. Mite density was calculated as the number of specimens per g of dust. The results were compared with household features and the data were statistically analyzed. In total 566 mite specimens were isolated, including 526 members of the family Pyroglyphidae (93%). The dominant species were Dermatophagoides pteronyssinus (60% of the total count) and Dermatophagoides farinae (32%). Pyroglyphids were found in all mite positive samples (68%) of which 35% also contained non-pyroglyphids, including glycyphagids, cheyletids and gamasids. The results suggest associations between the density of some mite taxa (per g of dust) and the following indoor environmental factors: presence of pets, number of inhabitants, coal-stoves as a type of heating, cleaning frequency, higher relative humidity, presence of flowers and PVC windows. The severity of asthma seems to be associated with the numbers of D. farinae, total domestic mites and live mites per g of dust.

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Poor asthma control and high prevalence of sensitization to dust mites, Blomia tropicalis, in Polynesian asthmatic patients

10.1183/13993003.congress-2019.pa2740 ◽

2019 ◽

Author(s):

Michael Phelippeau ◽

Guillaume Lezmi

Keyword(s):

Asthma Control ◽

Dust Mites ◽

Blomia Tropicalis ◽

Asthmatic Patients ◽

High Prevalence

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Sensitization to Blomia tropicalis among Asthmatic Patients in Taiwan

International Archives of Allergy and Immunology ◽

10.1159/000023894 ◽

1998 ◽

Vol 115 (2) ◽

pp. 144-149 ◽

Cited By ~ 31

Author(s):

Jaw-Ji Tsai ◽

Huai Hui Wu ◽

Horng-Der Shen ◽

Err-Lieh Hsu ◽

Soo-Ray Wang

Keyword(s):

Blomia Tropicalis ◽

Asthmatic Patients

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Sequential degranulation of eosinophils induced by antigen or autocoids in allergic humans

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100143390 ◽

1986 ◽

Vol 44 ◽

pp. 354-355

Author(s):

Kate W. Sjoerdsma ◽

W. James Metzger

Keyword(s):

Allergic Rhinitis ◽

Bronchoalveolar Lavage ◽

Allergic Asthma ◽

Skin Test ◽

Positive Skin Test ◽

Positive Skin ◽

Human Eosinophil ◽

Asthmatic Patients ◽

Allergic Asthmatic ◽

History Of

Eosinophils are important to the pathogenesis of allergic asthma, and are increased in bronchoalveolar lavage within four hours after bronchoprovocation of allergic asthmatic patients, and remain significantly increased up to 24 hours later. While the components of human eosinophil granules have been recently isolated and purified, the mechanisms of degranulation have yet to be elucidated.We obtained blood from two volunteers who had a history of allergic rhinitis and asthma and a positive skin test (5x5mm wheal) to Alternaria and Ragweed. Eosinophils were obtained using a modification of the method described by Roberts and Gallin.

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