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  • Title: Chronic-intermittent urokinase therapy in patients with end-stage coronary artery disease and refractory angina pectoris--a pilot study.
    Author: Schoebel FC, Leschke M, Jax TW, Stein D, Strauer BE.
    Journal: Clin Cardiol; 1996 Feb; 19(2):115-20. PubMed ID: 8821421.
    Abstract:
    Patients with coronary artery disease and severe angina pectoris refractory to conventional medical treatment (beta blockers, nitrates, calcium antagonists) and without the option for invasive revascularization procedures represent an increasing clinical problem. For these patients, chronic-intermittent urokinase therapy has been developed. Twenty patients received 500,000 IU urokinase as intravenous bolus injection 3 times a week over a period of 12 weeks. The average reduction in anginal symptoms in 19 patients was 74%, from 23.5 +/- 10.8 to 5.2 +/- 4.8 events/week (p < 0.001); 1 patient was excluded from further treatment because of an increase of > 66% in anginal events. Fibrinogen decreased by 34% from 370 +/- 57 to 244 +/- 44 mg/dl (p < 0.001), the rheological parameters plasma viscosity by 6.1% from 1.39 +/- 0.04 to 1.31 +/- 0.03 mPas (< 0.001), and red blood cell aggregation by 18% from 13.9 +/- 2.4 to 11.2 +/- 2.2 (p < 0.001). Exercise tolerance increased by 51%. Average ST-segment depression decreased from 0.16 +/- 0.10 to 0.12 +/- 0.09 (p < 0.01). After 12 weeks of follow-up, angina pectoris and fibrinogen levels were still significantly reduced compared with baseline values. Chronic-intermittent urokinase therapy represents an effective anti-ischemic and antianginal approach in patients with refractory angina pectoris and end-stage coronary artery disease. Improvement of rheological blood properties and thrombolytic effects are likely therapeutic mechanisms.
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