In an attempt to investigate the effect of tissue plasminogen activator in the resolution of intracerebral haematoma an experimental model of intracerebral haematoma was designed in the cat. A total of 24 adult cats were studied. Intracerebral hematomas were provoked by stereotaxically injecting 0.2 ml of dotted human blood into the left frontal lobe. Control animals received 0.2 ml of normal s...

Plasmin is a potent extracellular protease specialized in the degradation of fibrin (fibrinolysis). Active plasmin is generated by proteolytic activation of the zymogen plasminogen (Plg) by urokinase-type plasminogen activator (uPA) and tissue-type plasminogen activator (tPA). Alpha-enolase, although traditionally considered a glycolytic enzyme, constitutes a receptor for plasminogen on several...

Cultured mouse blastocysts produce plasminogen activator, a protease that converts the zymogen plasminogen into the trypsin-like enzyme, plasmin. We have fractionated the blastocyst and cultured the constituent cell types. Trophoblast outgrowths free of inner cell mass derivatives secrete plasminogen activator during a time period that closely parallels the invasive phase of trophoblast cells i...