title: Reference values and variability of plasminogen in healthy blood donors and its relation to parameters of the fibrinolytic system.
abstract: During a survey of four month's duration the following parameters were determined in 43 healthy blood donors (22 males, 21 females; mean age 29 years/20-49/): plasminogen activity, plasminogen concentration, alpha 2-antiplasmin (alpha 2-AP) activity, alpha 2-AP concentration, tissue type plasminogen activator (t-PA) activity, t-PA concentration, plasminogen activator inhibitor--I (PAI-I) activity, AT III activity, AT III concentration and heparin cofactor II (HC II) activity. Normal values including standard deviation (x +/- 2s) were: plasminogen activity: 96.3% (65.9-126.8), plasminogen concentration: 12.2 mg/dl (7.7-16.8), alpha 2-AP activity: 99.9% (83.8-116), alpha 2-AP concentration: 108.1% (84.5-131.8), t-PA activity: 0.85 IU/l (0.0-1.92), t-PA concentration: 10.3 ng/ml (2.5-18.1), PAI-I activity: 15.2 AU/ml, AT III activity: 111.4% (87.8-134.9), AT III concentration: 31.6 mg/dl (24.2-39.1) and HC II activity: 110.7% (81.4-140.0). Concerning plasminogen values no sex related difference could be stated. Women who were smokers and used oral contraceptives tended to present elevated t-PA activity levels due to a lower activity of PAI-I, although this tendency was not significant. Determining concentration and activity of components in the fibrinolytic system plays an important part in the diagnosis, therapy and prognosis of thrombophilic disorders.
mesh_terms: D000328:Adult; D001780:Blood Coagulation Tests / Q000592:standards*; D001782:Blood Donors; D005260:Female; D005342:Fibrinolysis; D006801:Humans; D008297:Male; D008875:Middle Aged; D010958:Plasminogen / Q000032:analysis* / Q000592:standards; D012016:Reference Values; D012907:Smoking; D010959:Tissue Plasminogen Activator / Q000097:blood
chemical_list: D010958:Plasminogen; D010959:Tissue Plasminogen Activator