Kits for screening for blood coagulation disorders
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Abstract
In vitro methods for qualitative screening and/or quantitative determination of the functional activity of components of the Protein C anticoagulant pathway of blood coagulation are described. The methods entail measuring the conversion rate of a substrate by an enzyme, the activity of which is related to the Protein C anticoagulant activity, in a blood sample of a human comprising coagulation factors and said substrate, after at least partial activation of coagulation through the intrinsic, extrinsic or common pathway and triggering coagulation by adding calcium ions; and comparing said conversion rate with the conversion rate of a normal human blood sample determined in the same way. The methods include the addition of additional metal ions to the sample to enhance activity, sensitivity and resolution. Kits and reagents for use in the methods are also provided.
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Citations
84 Claims
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1-34. -34. (canceled)
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35. A kit for determining the activity of one or more components of a Protein C anticoagulant pathway, the kit comprising the following components:
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(a) procoagulant reagent;
(b) an exogenous synthetic substrate for an enzyme influenced by Protein C anticoagulant activity (c) calcium ions; and
(d) at least one metal ion that increases anticoagulant activity of the Protein C anticoagulant pathway, the metal ion selected from the group consisting of Mg+2, Mn+2, Zn+2, Ni+2, Sr+2, Cu+2, and Cu+;
wherein the components are in separate containers and/or in containers comprising mixtures of at least two of the components. - View Dependent Claims (45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84)
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36. (canceled)
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37. A composition for determining the activity of one or more components of a Protein C anticoagulant pathway comprising
(a) a procoagulant reagent; -
(b) an exogenous synthetic substrate for an enzyme influenced by Protein C anticoagulant activity (c) calcium ions; and
(d) at least one metal ion in a concentration that increases anticoagulant activity of the Protein C anticoagulant pathway, the metal ion selected from the group consisting of Mg+2, Mn+2, Zn+2, Ni+2, Sr+2, Cu+2,
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38-44. -44. (canceled)
Specification