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  • Title: [Analysis of cellular and biochemical contents of broncho-alveolar lavage fluid from patients with pulmonary tuberculosis].
    Author: Fukushima K, Hiratani K, Kadota J, Komori K, Hirota M, Hara K.
    Journal: Kekkaku; 1991 Sep; 66(9):589-98. PubMed ID: 1942730.
    Abstract:
    To evaluate the local immune response in lung and activity of pulmonary tuberculosis. Broncho-alveolar lavage (BAL) was performed on 15 patients with pulmonary tuberculosis. Patients consisted of nine in the active stage and six in the inactive stage. Acid-fast bacilli (AFB) in BAL fluid (BALF) were found in six out of nine active stage patients (BAL-AFB positive group). The results obtained were as follows; 1) The number of total cells in BALF increased significantly in BAL-AFB positive group. BALF from two patients of this group, who were in the very early stage, revealed that the lymphocytes increased predominantly whereas neutrophils were dominant in BALF from the other four patients. 2) No case showed increase of B cells in BALF. Lymphocytes surface markers were compared between BAL-AFB positive and negative groups. No difference was found in the numbers of OKT3, OKT4 and OKT8. The positive rates of OKIal, and OKT4/8 ratio were both increased in BALF compared to the BAL-AFB positive group. 3) The numbers of OKT4 and OKT4/8 ratio in peripheral blood, which were taken simultaneously with BAL, were decreased in patients in the active stage. 4) Protein, albumin, IgG, IgA, lysozyme and alpha 1-antitrypsin levels in BALF were all increased in tuberculous patients. No correlation between the activity of tuberculosis and levels of protein, albumin, IgG and IgA was observed. Lysozyme level increased in the inactive stage of patients. On the other hand alpha 1-antitrypsin level increased in the active stage. Fibronectin level in BALF from patients was lower than that from normal controls. 5) Smoking habit had no influence on the above results. 6) Only one case showed the appearance of new lesions after BAL procedure as a complication.
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