Revue des maladies respiratoires · 2019
[Mite sensitization in children followed for respiratory allergy in a tropical African environment in Cotonou, Benin].
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Agodokpessi G, Sagbo G, Bigot C, Hountohotegbe T, Dossou-Yovo S, Djogbessi D, Bigot A
Аннотация
INTRODUCTION: In tropical Africa, allergies are not well documented. The objective of this work was to evaluate, by two methods, the sensitization to mites in children followed for respiratory allergy.
METHODS: Skin prick-test and IgE assay by REAST test with 3 mites: Dermatophagoides pteronyssinus (D. pteronyssinus), Dermatophagoides farinae (D. farinae) and Blomia tropicalis (B. tropicalis) were carried out in children from 3 to 15 years followed up for asthma and/or allergic rhinitis. The positive results of the two tests were compared.
RESULTS: Of the 130 (100%) children included, all eligible for the assay, 119 (91.5%) had the prick-test. The mean age and sex ratio (M/F) were 7±1 year, and 1.6. The association of rhinitis and asthma was the most frequent and found in 66 (55.6%). The sensitivity frequencies for the prick-test and assay were respectively 79% versus 36.1% for B. tropicalis, 71.4% versus 33.4% for D. pteronyssinus and 38.7% versus 37.8% for D. farinae. A moderate correlation between mean papule diameter and mean IgE concentration was observed.
CONCLUSION: In African tropical environments, dust mite sensitization in children followed for respiratory allergy is frequent, with the order of frequency being: B. tropicalis, D. pteronyssinus, and D. farinae. The prick-test had better sensitivity than the assay for its evaluation.
METHODS: Skin prick-test and IgE assay by REAST test with 3 mites: Dermatophagoides pteronyssinus (D. pteronyssinus), Dermatophagoides farinae (D. farinae) and Blomia tropicalis (B. tropicalis) were carried out in children from 3 to 15 years followed up for asthma and/or allergic rhinitis. The positive results of the two tests were compared.
RESULTS: Of the 130 (100%) children included, all eligible for the assay, 119 (91.5%) had the prick-test. The mean age and sex ratio (M/F) were 7±1 year, and 1.6. The association of rhinitis and asthma was the most frequent and found in 66 (55.6%). The sensitivity frequencies for the prick-test and assay were respectively 79% versus 36.1% for B. tropicalis, 71.4% versus 33.4% for D. pteronyssinus and 38.7% versus 37.8% for D. farinae. A moderate correlation between mean papule diameter and mean IgE concentration was observed.
CONCLUSION: In African tropical environments, dust mite sensitization in children followed for respiratory allergy is frequent, with the order of frequency being: B. tropicalis, D. pteronyssinus, and D. farinae. The prick-test had better sensitivity than the assay for its evaluation.