In a prospective study of deep vein thrombosis (DVT), detected by the Tc-plasmin test,
in 34 patients with acute myocardial infarction sequential determinations were made
in plasma by immunologic methods of histidine-rich glycoprotein (HRG) and total plasminogen
and the concentrations of free plasminogen calculated. Mean plasma HRG concentrations
were consistently higher in the group of patients, in which Tc-plasmin scanning had
revealed the existence of DVT. The effect of HRG caused the level of free plasminogen
to be only 50–60% of the level of total plasminogen. Fluctuations of HRG caused only
minor changes in free plasminogen concentrations. Our data suggest that HRG acts as
a weak, negative acute phase reactant.
Key Words
Histidine-rich glycoprotein - Plasminogen - Free plasminogen - Myocardial infarction
- Deep vein thrombosis -
99mTc-plasmin scanning