Stroke · 1991
Stroke in a young adult with familial plasminogen disorder.
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Furlan A J, Lucas F V, Craciun R, Wohl R C
Аннотация
BACKGROUND: We report a new plasminogen disorder detected in a 29-year-old man with a cerebellar infarct. To our knowledge, plasminogen disorders have not been previously linked with stroke.
SUMMARY OF REPORT: Tests for well-recognized causes of stroke were negative. However, a screening hypercoagulation profile indicated low functional levels of plasminogen activity. Immunologic plasminogen (Laurell technique) was 64% of normal (normal level, 80-130%). The rate of plasmin generation induced by adding urokinase to plasma was also low. Plasminogen activator, free protease, and alpha 2-plasmin inhibitor levels were normal. Family studies detected a similar plasminogen abnormality in the patient's mother and 9-year-old son, both of whom are asymptomatic.
CONCLUSIONS: Our patient shows a congenital, heterozygous, functionally abnormal plasminogen. Although the exact relationship to stroke is unclear, we suggest screening young patients with unexplained stroke for plasminogen defects using commercially available assay systems.
SUMMARY OF REPORT: Tests for well-recognized causes of stroke were negative. However, a screening hypercoagulation profile indicated low functional levels of plasminogen activity. Immunologic plasminogen (Laurell technique) was 64% of normal (normal level, 80-130%). The rate of plasmin generation induced by adding urokinase to plasma was also low. Plasminogen activator, free protease, and alpha 2-plasmin inhibitor levels were normal. Family studies detected a similar plasminogen abnormality in the patient's mother and 9-year-old son, both of whom are asymptomatic.
CONCLUSIONS: Our patient shows a congenital, heterozygous, functionally abnormal plasminogen. Although the exact relationship to stroke is unclear, we suggest screening young patients with unexplained stroke for plasminogen defects using commercially available assay systems.