Abstract: The present invention clearly demonstrates that vWF-collagen interaction, via the A3 domain of vWF, plays an important role in acute platelet-dependent arterial thrombus formation and that blocking the A3 domain in a vWF-collagen interaction can induce complete abolition of thrombus formation in the injured and stenosed baboon femoral arteries. Accordingly, an antibody or an antigen recognizing fragment thereof binding specifically to the A3 domain of vWF or an epitope thereof can be used for the prevention of acute arterial thrombotic syndromes or to manufacture medicines to for the prevention of acute arterial thrombotic syndromes.

Abstract: The present invention relates to a method for detecting von-Willebrand factor (vWF) activity comprising assaying a sample in the presence of a soluble form or portion of glycoprotein Ib(?) (GPIb(?)) and ristocetin, or a functionally equivalent substance. Additionally, the invention relates to the use of the aforementioned soluble form or portion of glycoprotein Ib(?), of ristocetin or a functional equivalent substance, of specifically reacting anti-GPIB(?) antibody(ies) and/or of specific binding partners, like specifically reacting anti-vWF antibody(ies) for carrying out the method of the invention. Furthermore, the present invention relates to kits for carrying out the method of the invention.

Abstract: The invention relates generally to an anti-thrombotic treatment of occlusive syndromes in the cerebral vascular system causing cerebral infarct due to stroke or ischemic stroke, which is a major cause of death and permanent disability in industrialized countries. More particularly, the invention relates to a system and method of preventing and treating such occlusive syndromes in the cerebral vascular by inhibiting initial adhesion/attachment of platelets to the endothelium by preventing or inhibiting binding of von Willebrand factor to platelet glycoprotein Ib by administration of a subject in such need anti-glycoprotein Ib monovalent antibodies and/or anti-vWF monovalent antibodies, rather than by blocking the common pathway of platelet aggregation by blockade of platelet aggregation with anti-glycoprotein IIb/IIIa.

Abstract: The present invention relates to a method for detecting von-Willebrand factor (vWF) activity comprising assaying a sample in the presence of a soluble form or portion of glycoprotein Ib(?) (GPIb(?) and ristocetin, or a functionally equivalent substance. Additionally, the invention relates to the use of the aforementioned soluble form or portion of glycoprotein Ib(?), of ristocetin or a functional equivalent substance, of specifically reacting anti-GPIB(?) antibody(ies) and/or of specific binding partners, like specifically reacting anti-vWF antibody(ies) for carrying out the method of the invention. Furthermore, the present invention relates to kits for carrying out the method of the invention.

Abstract: A ligand derived from, e.g., a Fab fragment of a monoclonal antibody obtainable from the cell line deposited with the Belgian Coordinated Collections of Micro-Organisms under accession number LMBP 5108CB binds to the human platelet glycoprotein GPIb and prevents the binding of von Willebrand factor to said GPIb without inducing thrombocytopenia. The said ligand is useful, in admixture with a pharmaceutically acceptable carrier, in a pharmaceutical composition, optionally further comprising a thrombolytic agent, for preventing and/or treating haemostasis disorders.

Abstract: A ligand derived from, e.g. a Fab fragment of, a monoclonal antibody obtainable from the cell line deposited with the Belgian Coordinated Collections of Micro-organisms under accession number LMBP 5108CB binds to the human platelet glycoprotein GPib and prevents the binding of von Willebrand factor to said GPIb without inducing thrombocytopenia. The said ligand is useful, in admixture with a pharmaceutically acceptable carrier, in a pharmaceutical composition, optionally further comprising a thrombolytic agent, for preventing and/or treating haemostasis disorders.

Abstract: The present invention clearly demonstrates that vWF-collagen interaction plays an important role in acute platelet-dependent arterial thrombus formation and that blockade of vWF-collagen interaction can induce complete abolition of thrombus formation in the injured and stenosed baboon femoral arteries. Accordingly, a blocker of vWF-collagen can be used as a compound for the prevention of acute arterial thrombotic syndromes or to manufacture medicines to prevention of acute arterial thrombotic syndromes.

Abstract: The present invention clearly demonstrates that vWF-collagen interaction plays an important role in acute platelet-dependent arterial thrombus formation and that blockade of vWF-collagen interaction can induce complete abolition of thrombus formation in the injured and stenosed baboon femoral arteries. Accordingly, a blocker of vWF-collagen can be used as a compound for the prevention of acute arterial thrombotic syndromes or to manufacture medicines to prevention of acute arterial thrombotic syndromes.