Human hair is a potential source of cat allergen contamination of ambient air

• Published in: Allergy (Copenhagen) 2005-07, Vol.60 (7), p.961-964
• Main Authors: Karlsson, A.‐S., Renström, A.
• Format: Article
• Language: English
• Subjects: Adult; Air Pollutants - immunology; Air Pollution, Indoor; allergen avoidance; allergen sampling; Allergens - immunology; Allergic diseases; Allergies; Animals; Biological and medical sciences; cat allergen; Cats; Child; Environmental Exposure; Fel d 1; Fundamental and applied biological sciences. Psychology; Fundamental immunology; Glycoproteins - immunology; Hair; Hair - immunology; human hair; Humans; Immunopathology; Inhalation Exposure; Medical sciences; Medicin och hälsovetenskap
• ISSN: 0105-4538; 1398-9995
• DOI: 10.1111/j.1398-9995.2005.00796.x

Background:  We have previously shown that airborne cat allergen levels are significantly lower in school classes using special school clothing or in classes with no pet owners. However, cat allergen is present and the levels are in fact two‐ to threefold higher on cat owners’ than noncat owners’ school clothing which is used, washed and stored at school only. This suggests that allergen is transferred to schools by routes other than clothing. Aim:  To analyse levels of cat allergen (Fel d 1) in hair from cat owners and noncat owners among children and adults. Methods:  Samples of unwashed hair (≥1 day prior to sampling) from adults and children with (n = 22) or without (n = 22) cats at home were collected at a hairdresser. In addition, samples of newly washed hair (adults only, n = 11) were collected. The hair sample was extracted and analysed for Fel d 1 content with ELISA. Results:  The geometric mean levels were more than two orders of magnitude higher in unwashed hair from cat owners, compared with noncat owners (P