Analogues of the Kunitz Protease Inhibitor (KPI) domain of amyloid precursor protein bind to and inhibit activity of serine proteases, including kallikrein, plasmin and coagulation factors such as factors VIIa, IXa, Xa, XIa, and XIIa. Pharmaceutical compositions containing the KPI analogues, along with methods for using such compositions, are useful for ameliorating and treating clinical conditions associated with increased serine protease activity, such as blood loss related to cardiopulmonary bypass surgery. Nucleic acid sequences encoding these analogues and systems for expression of the peptides of the invention are provided.

Los análogos del dominio del inhibidor del protease de Kunitz (KPI) del lazo amiloideo de la proteína del precursor a e inhiben la actividad de los proteases del serine, incluyendo kallikrein, los factores del plasmin y de coagulación tales como factores VIIa, IXa, XA, XIa, y XIIa. Las composiciones farmacéuticas que contienen los análogos de KPI, junto con los métodos para usar tales composiciones, son útiles para mejorar y tratar las condiciones clínicas asociadas a actividad creciente del protease del serine, tal como pérdida de la sangre relacionada con la cirugía cardiopulmonar de puente. Las secuencias del ácido nucleic que codifican estos análogos y sistemas para la expresión de los peptides de la invención se proporcionan.

 
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