Correlation between inhalant allergen-specific IgE and pulmonary function in children with asthma.
Sensitization to aeroallergens is associated with diminished lung function in adults. Little has been studied on the relationship between the inhalant allergen-specific IgE and pulmonary function in asthmatic children. This study was focused on four major inhalant allergens found in Korea, including Dermatophagoides pteronyssinus (Der p.), Dermatophagoides farinae (Der f.), and Alternaria- and German cockroach-specific IgEs, with evaluation of pulmonary function in relation to the amount of allergens. The parents or legal guardians of participants enrolled in this study gave informed consent. Fifty-five asthmatic patients and 48 nonasthmatic children were included. The amounts of specific IgE for the four specified inhalant allergens were determined by employing the CAP system FEIA. Forced expiratory volume in 1 sec (FEV(1))/forced vital capacity (FVC), FEV(1), and forced expiratory flow between 25% and 75% of FVC (FEF(25-75)) of subjects were evaluated through pulmonary function tests. In the asthmatic group, FEV(1), FEV(1)/FVC, and FEF(25-75) were significantly reduced (P < 0.05): reduction in FEV(1) (r = -0.44) and FEF(25-75) (r = -0.33) in association with the Der f.-specific allergen, and reduction in FEV(1) (r = -0.37) and FEF(25-75) (r = -0.34) in association with the Der p.-specific allergen, were observed. However, there was no significant correlation with German cockroach and Alternaria allergen. In the control group, no significant correlation was detectable between the allergen-specific IgE titers and the results of pulmonary function tests. In asthmatic patients, Der p.- and Der f.-specific IgEs, and not German cockroach and Alternaria, seem to play a considerable role in reduced pulmonary function among asthmatic children.
Choi
Sung-Yon
SY
Department of Pediatrics and Allergy Institute, Yonsei University College of Medicine, Seoul, Korea.
Sohn
Myung Hyun
MH
Yum
Hye-Yung
HY
Kwon
Byoung-Chul
BC
Kim
Kyu-Earn
KE
D000280:Administration, Inhalation; D000293:Adolescent; D000485:Allergens / Q000008:administration & dosage*; D001249:Asthma / Q000175:diagnosis / Q000276:immunology / Q000503:physiopathology*; D001985:Bronchial Provocation Tests; D002648:Child; D005260:Female; D005540:Forced Expiratory Flow Rates / Q000187:drug effects / Q000502:physiology; D006801:Humans; D007073:Immunoglobulin E / Q000008:administration & dosage*; D007723:Korea; D008297:Male; D012123:Pulmonary Ventilation / Q000187:drug effects / Q000502:physiology*; D039981:Pyroglyphidae / Q000276:immunology; D012189:Retrospective Studies; D012720:Severity of Illness Index; D013147:Spirometry; D014797:Vital Capacity / Q000187:drug effects / Q000502:physiology
D000485:Allergens; D007073:Immunoglobulin E