• 건강소식
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• v.32 no.4 s.353
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• pp.6-13
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• 2008

환절기만 되면 발작적 호흡곤란 때문에 고생을 하는 사람이 있다. 이들은 곤히 잠든 새벽녘에 천식발작을 일으켜 숨이 차서 밤을 꼬박 새우기도 한다. 천식은 기관지가 정상인보다 민감해서 작은 자극에도 쉽게 반응을 하기 때문에 생기는 병이다. 숨을 쉴 때 휘파람을 불 듯‘휘휘’소리가 나는 천명, 호흡곤란, 기침이 천식의 3대 증상이다. 발작이 일어나면 숨을 제대로 못 쉬기 때문에 안색이 창백해지고 입술이 파랗게 되는 등 고통이 심하지만 발작이 끝나면 거짓말처럼 깨끗이 낫는 게 특징이다.

• 건강소식
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• v.31 no.8 s.345
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• pp.30-31
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• 2007

천식은 기도가 수축하고 염증이 생기는 흔한 만성 호흡기 질환이다. 천식은 평소에도 기관지에 염증이 존재하므로 가벼운 자극에도 쉽게 기도가 좁아지게 되어 천명음(숨쉴 때 쌕쌕거리는 소리), 기침, 가슴이 답답함, 호흡곤란 등의 증상이 나타나게 된다. 만일 치료를 하지 않고 그대로 방치한다면 오랫동안 폐 기능이 감소된다. 아직까지 천식을 완치할 수 있는 치료법은 발견되지 않았지만, 올바른 방법으로만 하면 성공적으로 관리할 수 있는 질병이다.

• Tuberculosis and Respiratory Diseases
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• v.57 no.5
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• pp.419-424
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• 2004

Background : Although bronchodilator reversibility testing is widely performed to diagnose asthma or COPD, there is debate upon its usefulness and methods to differentiate asthma from COPD. The purpose of this study is to elucidate the role of bronchodilator reversibility testing in differentiating asthma from COPD and to confirm which method is better at evaluating bronchodilator reversibility. Methods : 26 asthma patients and 31 COPD patients were reviewed retrospectively. Spirometry was performed before and after bronchodilator inhalation to get $FEV_1$, FVC. To evaluate bronchodilator reversibility, the increase in $FEV_1$ or FVC was expressed as three methods, 'percentage of the baseline value', 'percentage of the predicted value', or 'absolute value'. Area under the ROC curve was measured to compare the three methods. In addition, the criteria of American Thoracic Society (ATS) for bronchodilator reversibility were compared to those of European Respiratory Society (ERS). Results : 1. In differentiating asthma from COPD, 'percentage of the predicted value', or 'absolute value' method was useful but 'percentage of the baseline value' was not. However, the ability to differentiate was weak because areas under the ROC curves by all methods were less than 0.75. 2. The criteria of ERS were superior to those of ATS for bronchodilator reversibility to differentiate asthma from COPD because likelihood ratio (LR) of a positive test by ERS criteria was greater than ATS criteria and because LR of a negative test by ERS criteria was less than ATS criteria. Conclusion : In differentiating asthma from COPD, bronchodilator reversibility testing has a weak role and should be considered as an adjunctive test.

• Tuberculosis and Respiratory Diseases
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• v.54 no.2
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• pp.191-198
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• 2003

Background : The pathological features in asthmatic airway remodeling are diverse. The aim of this study was to examine the degree of airway vascularity in relation to the other remodeling parameters in asthmatics. Methods : Bronchial biopsies were done in 34 asthmatic patients, and 6 control subjects. The basement membrane thickness and the subepithelial thickness were measured in the hematoxylin-eosin stained tissue, and the degree of vascularity was measured using type IV collagen immunostaining. Results : 1) Compared to the control subjects, the asthmatics showed a significant increase in the basement membrane thickness ($6.92{\pm}2.01{\mu}m$ vs $9.67{\pm}2.84{\mu}m$, p<0.05) and the subepithelial thickness ($44.49{\pm}31.92{\mu}m$ vs $121.22{\pm}72.79{\mu}m$, p<0.05). 2) Compared to the control subjects, the asthmatics showed a significant increase in the vascular area per unit submucosal area ($4.51{\pm}2.13%$ vs $10.32{\pm}6.08%$, p<0.05). In addition, the number of vessels per unit submucosal area showed an increased tendency without statistical significance. 3) In the asthmatics, the number of vessels and the vascular area per unit submucosal area showed no correlation with the basement membrane thickness, the subepithelial thickness, the severity, the forced expiratory volume in 1 second($FEV_1$), and the methacholine provocative concentration 20($PC_{20}$). Conclusion : This study showed that vascularity was an important parameter in asthmatic airway remodeling but it was not related to the other remodeling parameters such as the basement membrane thickness and the subepithelial thickness. Each of these asthmatic remodeling parameters may have a different clinical significance. Therefore, further studies will be needed.

• Tuberculosis and Respiratory Diseases
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• v.46 no.6
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• pp.826-835
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• 1999

Background : The $\beta_2$ adrenergic receptor ($\beta_2$ AR) polymorphisms occurring at amino acid position 16 (Arg to Gly), 27 (Gln to Glu), 34 (Val to Met), and 164 (Thr to Ile) are known to be functionally relevant and also disease-modifying in subjects with asthma. However the contribution of these polymorphisms to the development of the asthmatic phenotype or other markers for allergic disease remains to be established. Methods : 109 patients with bronchial asthma and 42 healthy person were included. Serum total IgE, allergen specific IgE, and skin prick test were performed to all of the subjects. $\beta_2$ AR polymorphisms were checked by mutated allele specific amplification (MASA) method. Results : The results were as follows. The frequencies of $\beta_2$ AR polymorphisms in asthmatic patients and healthy person were not statistically different(p>0.05). There was no association between $\beta_2$ AR polymorphisms of amino acid position 16, 27, 34 and the existence of atopy among asthmatic patients(p>0.05). Between asthmatic patients with or without elevated IgE level and $\beta_2$ AR polymorphisms of amino acid position 16, 27, 34, there was no statistically significant association(p>0.05). Conclusion : There was no difference in frequency of the $\beta_2$ AR polymorphism between asthmatic patients and healthy person. In the bronchial asthma, association of $\beta_2$ AR polymorphism and atopy/serum total IgE was not found.

• 보건세계
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• v.48 no.6 s.538
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• pp.12-15
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• 2001

• 보건세계
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• v.42 no.2 s.462
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• pp.10-13
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• 1995

• 보건세계
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• v.42 no.11 s.471
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• pp.10-13
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• 1995

• 보건세계
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• v.42 no.12 s.472
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• pp.30-32
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• 1995

• 보건세계
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• v.49 no.5 s.549
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• pp.36-39
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• 2002