Granulocyte Proteases in Human Maxillary Sinus Secretions

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Abstract
Retained maxillary sinus secretions from 10 consecutive patients suffering from maxillary sinusitis were studied with regard to proteolytic activity and its possible sources. All secretions were proteolytically active. In 3 purulent secretions the proteolytic activity was of the same magnitude as that of a standard with an excess of pancreatic trypsin. The enzymes responsible for the proteolytical activity were found to be mainly of granulocyte origin, neutrophil elastase, unspecific collagenase and chymotrypsin-like cationic protein (CCP).