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Is there an association between indoor allergens and the severity of atopic dermatitis? | LitMetric

Is there an association between indoor allergens and the severity of atopic dermatitis?

Int J Dermatol

Department of Pediatric Infectious Diseases and Immunology, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile.

Published: April 2019

AI Article Synopsis

  • * A study involving 25 children in central Chile measured AD severity and indoor allergen levels, revealing no direct link between common household factors and disease severity, but found higher allergen concentrations in homes with pets.
  • * Results indicated that higher levels of dust mite and animal dander allergens were associated with more severe AD symptoms in children, suggesting indoor allergens play a significant role in AD severity and highlighting the need for further research.

Article Abstract

Background: Atopic dermatitis (AD) is a multifactorial inflammatory skin disease with frequent hypersensitivity to allergens. However, the role of exposure to indoor allergens on AD severity is unclear.

Methods: Children aged 0-17 years with active AD from central Chile were recruited; disease severity was evaluated with SCORAD and POEM scores. A home environment survey was applied to parents. Bedroom dust samples were collected for all subjects and analyzed by multiplex assay to quantify dust mite (Der p1, Der f1), dog (Can f1), cat (Fel d1), and alternaria alternata (Alt a1) allergens.

Results: Twenty-five children aged 3.9 ± 3.8 years were included. Fifty-two percent were female. Mean SCORAD was 29 ± 14 (range 11-61), and mean POEM was 10.7 ± 6.2. No direct association was found between tobacco exposure, pet ownership, aerosol use, visible dust, or home carpets/rugs with SCORAD (all P > 0.05). Dust samples from all homes had Can f1 and Fel d1 allergens, regardless of pet ownership. Homes that had indoor dogs or cats had significantly higher amounts of these allergens (P < 0.001). Forty percent of homes had dust mite allergens, and none had alternaria alternata. Children with AD living in homes with elevated dust mite and animal dander allergen concentrations had higher SCORAD than those from homes with low allergen concentrations (40 ± 13 vs. 26 ± 13, P = 0.025).

Conclusions: High concentrations of indoor allergens may influence AD severity in children. Further studies assessing indoor allergens and allergen sensitization are warranted to fully evaluate the role of indoor allergens on AD.

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Source
http://dx.doi.org/10.1111/ijd.14281DOI Listing

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