Tuberc Respir Dis > Volume 36(2); 1989 > Article
Tuberculosis and Respiratory Diseases 1989;36(2):120-126.
DOI: https://doi.org/10.4046/trd.1989.36.2.120    Published online June 1, 1989.
A Study on Diagnostic Value of Lysozyme Activity in Various pleural effusions
Hyung Jung Kim, Seung Min Kwak, Chul Min Ahn, Sung Kyu Kim, Won Young Lee
Department of Internal Medicine, College of Medicine, Yonsei University, Seoul, Korea
흉막 질환에 있어서 Lysozyme 활성도 측정의 진단적 가치에 관한 연구
김형중, 곽승민, 안철민, 김성규, 이원영
Abstract
Lysozyme (Muramidase), a lysosomal bacteriolytic enzyme orginates in serum from decomposed polymorphonuclear neutrophils and monocytes, and is distributed widely in body fluids and tissues of humans. In 1976, Klockars et al found high levels of lysozyme activity in tuberculous pleural effusion, but later the lysozyme activity level was stated to be on limited diagnostic usefulness. So we measured the levels of pleural and serum lysozyme activity in 82 patients with pleural effusions of various causes for evaluation of diagnostic usefulness, and following results were obtained 1) Mean level of pleural ADA activity of tuberculous pleural effesions was 82.49±4 1.51 U/ L, and was significantly higher than that of malignant pleural effusions 28.4 7±14.50 U/ L (p<0.01). 2) Mean level of pleurallysozyme activity of tuberculous pleural effusions was 14.09±9.91 ug/ ml, and was significantly higher than that of malignant pleural effusions 5.68± 3.55 ug/ ml (p < 0.01). 3) Mean level of serum lysozyme activity of tuberculous pleural effusions was 5.02±2.91 ug/ ml , and was not higher than that of malignant pleural effusions 5.30±5.64 ug/ ml (p>0.01). 4) Mean of pleural and serum ratio of lysozyme activity of tuberculous pleural effusions was 4.16±4.26, and was significantIy higher than that of malignant pleural effusions 2.26+2.46 (p<0.1). 5) We have found a low correlation between pleural ADA and Lysozyme (r=0.45; p<0.01) in 82 patients with pleural effusions. On conclusions, we did not found definitive level of pleural lysozyme activity level and pleural and serum ratio of lysozyme activity due to considerable overlap of the individual values between the tuberculous and malignant pleural effusions.


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