Methods and assays for distinguishing between different...

G - Physics – 01 – N

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G01N 33/68 (2006.01) G01N 33/86 (2006.01)

Patent

CA 2593328

The invention relates to a method for distinguishing between different states or forms of diseases and disorders characterized by thrombocytopenia and/or by spontaneous interaction between Von Willebrand Factor (vWF) and platelets, and/or to predict the progression of such a disease or disorder, said method comprising the steps of providing at least one biological sample obtained from a patient suffering from, or suspected to suffer from, at least one disease or disorder characterized by thrombocytopenia and/or by spontaneous interaction between Von Willebrand Factor (vWF) and platelets and of determining the amount of activated vWF in said biological sample, in which the amount of activated vWF in the sample is representative for the different states or forms of the disease or disorder. The invention further relates to a kit-of- parts for determining the amount of activated vWF in a sample and to the use of an antibody that is capable of specifically binding activated vWF in the presence of non-activated vWF; of a part or fragment of an antibody.

L'invention concerne une méthode pour distinguer différents états ou formes de maladies ou de troubles caractérisés par la thrombocytopénie et/ou par l'interaction spontanée entre le facteur Von Willebrand (vWF) et les plaquettes sanguines, et/ou pour prévoir la progression d'une maladie ou d'un trouble de ce type. Cette méthode consiste à préparer au moins un échantillon biologique pris sur un patient souffrant ou supposé souffrir d'au moins une maladie caractérisée par la thrombocytopénie et/ou par l'interaction spontanée entre le facteur Von Willebrand (vWF) et les plaquettes sanguines, et à déterminer la quantité de vWF activés dans l'échantillon biologique, cette quantité de vWF activés représentant les différents états ou formes de la maladie ou du trouble. La présente invention porte également sur un kit pour déterminer la quantité de vWF activés dans un échantillon, et sur l'utilisation d'un anticorps apte à lier de manière spécifique les vWF activés en présence de vWF non activés, ou bien d'une partie ou d'un fragment d'un anticorps.

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