Subpopulation of Lymphocytes in Pleural Effusions and Their Lymphocyte Responsiveness to Mitogen
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Simultaneous pleural and peripheral blood lymphocytes (PBL) were examined regarding their percentage of T cells and their responsiveness to phytohemagglutinin (PHA). Of the 26 cases studied, there were 13 malignant and 13 tuberculous pleural effusions. 1. Cases with tuberculous pleural effusions-In 11 of 13 cases, the percentage of lymphocytes was above 79% in their pleural effusions. The mean (±SD) percentage of T cells in the PBL was 52.9±10.4% (41-76996), which value was comparable to that of normal controls (59.9±8.5%). However, the mean percentage of T cells in the pleural lymphocytes was 73.8±18.5%(62-82%), whose value was significantly higher than that of the PBL. Abnormally lower responsiveness to PHA was not found in pleural lymphocytes. Pleural lymphocyte responsiveness to PHA was higher than the PBL responsiveness in all cases.2. Cases with malignant pleural effusion-In 6 of 13 cases, the percentage of lymphocytes was above 7096 in their pleural effusions. The mean percentage of T cells in PBL was 43.2±13.2% (29-68%). There was no statistically significant difference between this value and that of the controls. The mean percentage of the T cells in the pleural lymphocytes was 63.2±12.2%, whose value was higher than that in the PBL in all cases. However, the pleural lymphocyte responsiveness to PHA were varied in relation to the PBL responsiveness to PHA.In tuberculous pleural effusion, T cells predominated and they seemed to function well immunologically. However, in malignant pleural effusion, although T cells predominated, their immunological functions were varying from suppressed to normally restored.
- 一般社団法人 国立医療学会の論文
一般社団法人 国立医療学会 | 論文
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