Peritoneal fibrinolytic activity and intra-abdominal adhesions

Abstract The mechanisms leading to reduction of peritoneal fibrinolytic activity in conditions that are associated with the formation of intra-abdominal adhesions were studied. Tissue plasminogen activator was found, by antibody inhibition techniques, to be the activator of fibrinolysis in homogenates of control peritoneum (n=6). Homogenates of control (n=10) and inflamed peritoneum (n=10) were analysed. Plasminogen activating activity was much lower in inflamed peritoneum (median 0·07 IU/cm 2 ) than in control tissue (median 12·0 IU/cm 2 ) (p 2 -antiplasmin were similar in both control and inflamed tissue. Plasminogen activator inhibitor-1, not detectable in control peritoneum, was present in inflamed tissue and might be the reason for the reduction in functional fibrinolytic activity.