Prevalence of mites in dust samples from mattress surfaces from single beds or cribs and evaluation of the home environment and sensitivity to mites in atopic patients residing in the south Brazilian city of Londrina / Avaliação do ambiente domiciliar e da sensibilidade cutanea imediata de pacientes atopicos e a prevalencia de acaros em amostras de poeira coletadas de colchões de camas e berços na cidade de Londrina-PR
AUTOR(ES)
Dagoberto Ribeiro da Silva
DATA DE PUBLICAÇÃO
2007
RESUMO
The prevention and treatment of symptoms related to asthma and allergic rhinitis must include the environmental control of aeroallergens such as mites and cockroaches. The aim of this study was to investigate mites in mattress dust samples from cribs or beds in the southern Brazilian city of Londrina, State of Paraná as well as to evaluate the possible interrelation between environmental factors and control methods, and mite sensitivity of atopic patients. Atopic pre-school children (n=24), school-age children and adults (n=21) and group-control with non-atopic pre-school children (n=15), school-age children and adults (n=15) completed a questionnaire on the structural and environmental conditions of Londrina/PR. Skin prick tests for mites and house dust extracts were performed in most patients to evaluate immediate sensitivity. Dust samples from 133 top and bottom mattress surfaces, and bed frames from 38 dwellings (18 cribs and 21 beds), and one day nursery (6 cribs) were vacuumed. Statistical analysis was also performed. Adequate environmental control was rarely seen in dwellings. Skin prick test results showed a high sensitivity for the extracts of house dust, and the mites D. pteronyssinus, D. farinae, and B. tropicalis, also in children. Sensitivity and environmental factors or control method correlation was not observed. A total of 758 mite bodies were counted in slides; 233 (30.7%) from cribs and 525 (69.3%) from beds (p<0.001). House dust mites- mainly Dermatophagoides pteronyssinus, represented 72% and 84% of total mite count in crib and bed dust samples, respectively. The estimated mean HDM body concentration in crib or bed slides were 289.9 ± 136.7 and 875.0 ± 183.6 mites/g, respectively. Statistical analysis showed a significantly higher mite body count on bottom mattress surfaces compared to top surface in bed samples only (p=0.025). The study suggests which mites are important allergens for atopic patients in Londrina. Data herein show that cribs like mattresses have sufficient mite bodies to cause sensitization to humans. Local communities should be informed about allergen control methods such as the use of mattress and pillow covers for cribs and beds to avoid allergen exposure
ASSUNTO(S)
mites acaro poeira alergia dust allergy
ACESSO AO ARTIGO
http://libdigi.unicamp.br/document/?code=vtls000432859Documentos Relacionados
- Acaros em amostras de poeira de vestimentas de individuos atopicos e não-atopicos
- Avaliação da fauna acarina em amostras de poeira de colchões na cidade de Campinas e comparação com a sensibilidade cutanea imediata de pacientes atopicos
- Avaliação da sensibilidade de cães com dermatite alérgica aos extratos alergênicos padronizados de ácaros da poeira domiciliar
- Avaliação da sensibilidade de cães com dermatite alérgica a extratos padronizados de ácaros da poeira domiciliar
- O processo de trabalho na assistência ao parto em Londrina-PR