Device and methods for identifying and treating aspirin non-responsive patients
First Claim
Patent Images
1. A method of evaluating aspirin responsiveness in a subject, comprising:
- (a) perfusing a blood sample from a subject through a channel in a perfusion device, wherein the channel has a coating which produces a blood deposit when exposed to blood and wherein the perfusion device comprises a pump which draws the blood through the channel at a selected shear rate, producing a blood deposit;
wherein the perfusion device provides real time measurements of (1) the thrombotic profile of aspirin effects in addition to P2Y12 antagonism in a collagen-coated perfusion chamber assay under arterial shear rates and (2) arachidonic acid/shear-induced platelet aggregation assay in whole blood under high shear rates; and
(b) determining a status of aspirin responsiveness by measuring the level of blood deposited in the chamber and comparing the measured level of deposited blood with a control level of deposited blood, wherein said control level is selected from the group consisting of (1) a level measured using a sample of blood from said subject which has been treated with aspirin;
(2) a level measured using a sample of blood from said subject which has been contacted with a thromboxane A2 receptor antagonist; and
(3) a level previously determined to correspond to a status of aspirin responsiveness.
3 Assignments
0 Petitions
Accused Products
Abstract
The present invention relates to methods and compositions for identifying and treating subjects in need of antithrombotic therapies but who are not responsive to aspirin.
21 Citations
14 Claims
-
1. A method of evaluating aspirin responsiveness in a subject, comprising:
-
(a) perfusing a blood sample from a subject through a channel in a perfusion device, wherein the channel has a coating which produces a blood deposit when exposed to blood and wherein the perfusion device comprises a pump which draws the blood through the channel at a selected shear rate, producing a blood deposit;
wherein the perfusion device provides real time measurements of (1) the thrombotic profile of aspirin effects in addition to P2Y12 antagonism in a collagen-coated perfusion chamber assay under arterial shear rates and (2) arachidonic acid/shear-induced platelet aggregation assay in whole blood under high shear rates; and(b) determining a status of aspirin responsiveness by measuring the level of blood deposited in the chamber and comparing the measured level of deposited blood with a control level of deposited blood, wherein said control level is selected from the group consisting of (1) a level measured using a sample of blood from said subject which has been treated with aspirin;
(2) a level measured using a sample of blood from said subject which has been contacted with a thromboxane A2 receptor antagonist; and
(3) a level previously determined to correspond to a status of aspirin responsiveness. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
Specification