Objective: To measure the concentration of D-dimer (DD), tissue plasminogen activator (t-PA), plasminogen activator inhibitor-1 (PAI-1) and plasminogen (PLG) activity in plasma and cerebrospinal fluid in patients with acute cerebral infarction and to investigate their clinical significance.
Methods: The concentrations of D-dimer, t-PA, and PAI-1 in plasma and cerebrospinal fluid in patients were measured by enzyme-linked immunosorbent assay (ELISA). The PLG biological activity was detected using the chromophore method. The results were compared with those of the controls.
Results: The concentrations of D-dimer, t-PA and PAI-1 in cerebrospinal fluid and plasma in patients with acute cerebral infarction were much higher than those of normal subjects (P < 0.01). Conversely, the level of PLG activity was significantly lower in the patients than in the controls (P < 0.01).
Conclusion: Hypercoagulability and secondary hyperfibrinolysis exist in patients with acute cerebral infarction.
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