Allergy Asthma Respir Dis.  2014 May;2(2):97-102. 10.4168/aard.2014.2.2.97.

Changes of aeroallergen sensitization in children with asthma or allergic rhinitis from a tertiary referral hospital in Seoul over 10 years

Affiliations
  • 1Department of Pediatrics, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Korea.
  • 2Research Center for Standardization of Allergic Diseases, Seoul, Korea. sjhong@amc.seoul.kr
  • 3Department of Pediatrics, Asan Medical Center, Childhood Asthma Atopy Center, University of Ulsan College of Medicine, Seoul, Korea.
  • 4Department of Pediatrics, Korea Cancer Center Hospital, Seoul, Korea.
  • 5Department of Pediatrics, Pusan National University Yangsan Hospital, Yangsan, Korea.

Abstract

PURPOSE
Allergic diseases have been increased in Korea. The aim of this study was to investigate the changes of sensitization rate to inhalant allergens over 10 years in children with allergic diseases from a tertiary referral hospital.
METHODS
Skin prick tests were done in total 2,225 children in 2000, 2005, and 2010. Changes of skin reactivity to 12 major inhalant allergens, including Tree pollen mixture I (Alder, Elm, Hazel, Poplar, Willow), Tree pollen mixture II (Beech, Birch, Oak, Plane tree), Dermatophagoides pteronyssinus, Dermatophagoides farina, Alternaria, cat dander, and dog dander were investigated.
RESULTS
The sensitization rates to Tree pollen mixture I and II were increased as 5.0%, 6.8% in 2000, 8.5%, 9.8% in 2005, and 14.8%, 17.3% in 2010, respectively (trend P<0.001, P<0.001, respectively). And the sensitization rates to D. pteronyssinus cat dander and dog dander were changed as 55%, 4.8%, 4.8% in 2000, 62.2%, 11.9%, 28% in 2005, and 63.1%, 12.7%, 16.7% in 2010, respectively. The distribution of sensitized pollens was oak (12.8%), beech (12.4%), pine (10.3%), birch (10%), hazel (9.6%), alder (8%), elder (6.9%), elm (5.4%) in the study of 2010. When allergen/histamine ratio was compared, rates of strong sensitization over 4+ to tree pollen were increased.
CONCLUSION
The sensitization rates to inhalant allergens were increased in children with asthma or allergic rhinitis from a tertiary referral hospital in Seoul over last 10 years. Especially, an increase in the degree of skin reactivity was observed in cat dander, dog dander, and tree pollens. The studies to investigate the etiology of this increase and prevention will be needed.

Keyword

Allergens; Asthma; Allergic rhinitis; Hypersensitivity; Child
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