Chest, Vol 102, 54-59, Copyright © 1992 by American College of Chest Physicians

ARTICLES

Differential cell analysis in bronchoalveolar lavage fluid from pulmonary lesions of patients with tuberculosis

T Ozaki, S Nakahira, K Tani, F Ogushi, S Yasuoka and T Ogura
Third Department of Internal Medicine, School of Medicine, Tokushima University, Japan.

To obtain information on the cellular reactions to Mycobacterium (M) tuberculosis in the lung, we analyzed the cells in bronchoalveolar lavage (BAL) fluid from pulmonary lesions in comparison with those in BAL fluid from nonaffected regions of the lungs, and control lungs, and in peripheral blood of patients with tuberculosis. Neutrophils and lymphocytes were increased in number in BAL fluid from affected lesions of the lungs of patients with miliary tuberculosis and patients with active pulmonary tuberculosis compared with those in BAL fluid from control patients, but the number of alveolar macrophages was decreased in BAL fluid from tuberculous lesions. However, the numbers of these cells were not changed in the BAL fluid from nonaffected regions of the lungs of patients with active or inactive pulmonary tuberculosis. The numbers of lymphocytes were decreased and the numbers of monocytes were increased in peripheral blood from patients with miliary tuberculosis and with active tuberculosis, indicating inverse changes in the numbers of lymphocytes and monocytes in the peripheral blood to those in the BAL fluid of patients with tuberculosis. These results indicate characteristic redistributions of immune or inflammatory cells in response to infection with M tuberculosis and suggest that these changes are important for understanding the pathophysiology of pulmonary tuberculosis.

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