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Measurement of house dustmite-specific IgA antibody in sputum from asthmatics

Other Title
기관지천식 환자의 객담내 집먼지진드기-특이 IgA항체의 측정
Authors
남, 동호; 박, 해심
Citation
Alrerugi, 17(1):25-34, 1997
Journal Title
Alrerugi; Journal of the Korean Society of Allergology; Korean Journal of Allergy; 알레르기
ISSN
1015-6372
Abstract
To evaulate the possible pathogenetic significance of allergen-specific IgA antibody in respiratory secretion from asthmatics, we measured house dust mite(HDM)-specific IgA antibody in 3% saline-induced sputum from 23 HDM-sensitive asthmatics, 4atopic asthmatics without mite-sensitivity, 6 non-atopic asthmatics, and 13 nonatoplc, non-asthmatic controls (including 6 non-atopic healthy controls, 4 patients with chronic bronchitis, and 3 patients with rheumatoid arthritis) by ELISA. We also measured HDM-specific IgA antibody in serum and numbers of eosinophils in sputum.

1) Levels of HDM-specific IgA antibody In sputum from mite-sensitive asthmatics

were significantly higher than those from non-atopic, non-asthmatic controls and

non-atopic asthmatics(p<0.05). Levels of HDM-specific IgA antibody in sputum from

atopic asthmatics without mitesensitivity were significantly higher than those from

non-atopic, non-asthmatic controls (p0.05).

2) The ratio of HDM-specific IgA antibody to albumin in sputum was not significantly different in mite-sensitive asthmatics with sputum eosulophila (≥5% of 200 counted leukocytes) and those without sputum eosinophilia(p>0.05).

3) The ratio of HDM-specific IgA to albumin in sputum from asthmatics was higher

than that of serum.

4) There was no significant correlation of HDM- specific IgA/albumin ratios between

serum and sputum (p>0.05).

5) When comparing sputum and saliva samples from 7 mite-sensitive asthmatics,

levels of HDM-specific IgA antibody in sputum were significantly higher than those in saliva (p<0.05).

In conclusion, HDM-specific IgA anti-body was increased in sputum from HDM-sensitive asthmatics, and it might be locally produced from bronchial mucosa. To evaluate the pathogenetic significance of allergen-specific IgA antibody in respiratory

secretion from asthmatics, further studies might be needed.
Keywords
IgAhouse dust mitebronchial asthmasputum
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Journal Papers > School of Medicine / Graduate School of Medicine > Allergy
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