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[Chemiluminescent measurements of alveolar macrophages in sarcoidosis patients].

The phagocytic activity of alveolar macrophages (AM) in a group of patients with stage I, stage II and stage III pulmonary sarcoidosis (gradation according to Wurm) has been investigated. Additionally a classification in different forms of the course of sarcoidosis was made (acute = Loefgren's syndrome, latent = primary-chronic, and relapses). Patients with other lung diseases and healthy subjects were recruited as control group. The phagocytic activity (stimulation with opsonized yeast cell wall particles) of AM, which were isolated by bronchoalveolar lavage, was determined by means of chemiluminescence (CL)-measuring using lucigenin and luminol, respectively, as amplifiers. The investigations showed that the lucigenin-dependent yeast cell wall-induced CL of AM in patients with sarcoidosis is significantly increased in comparison to the control group. No significant changes of the luminol-dependent CL of AM from sarcoidosis patients could be detected. The lucigenin-dependent CL-response of AM is obviously an indicator of the intensity of the alveolitis and thus of the activity of the pathological process in sarcoidosis. The results suggest that in pulmonary sarcoidosis there is a hyperreactive AM/lymphocytes-system.