[Changes in protease inhibitor balance of the bronchoalveolar secretion in children with inflammatory lung diseases].

As many as 95 children staying at a clinic were examined for the proteinase-inhibitory balance of the bronchoalveolar secretion in acute pneumonia, relapsing bronchitis and chronic pneumonia in the stage of exacerbation. In all the three diseases, there was a rise of the protein content, trypsin-like activity and alpha 2-macroglobulin level. In acute pneumonia, free antitryptic activity and the level of acid-resistant inhibitors increased; in relapsing bronchitis, these parameters remained within the limit of control values, and in chronic pneumonia, they significantly reduced.