Platelet antiheparin activity: storage site and release mechanism.
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چکیده
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منابع مشابه
Antigenic and antiheparin properties of human platelet factor 4 (PF4).
Platelet factor 4 (PF4, a heparin-neutralizing protein) was isolated from washed human platelets. It was found to be homogenous by SDS-polyacrylamide gel electrophoresis, immunodiffusion, and immunoelectrophoresis, when tested with monospecific antibody produced in rabbits. PF4 is a heat-stable protein, but its antiheparin activity and antigenicity are destroyed by trypsin. The molecular weight...
متن کاملAntigenic and Antiheparin Properties of Human Platelet Factor
Platelet factor 4 (PF4, a heparin-neutralizing protein) was isolated from washed human platelets. It was found to be homogenous by SDS-polyacrylamide gel electrophoresis, immunodiffusion, and immunoelectrophoresis, when tested with monospecific antibody produced in rabbits. PF4 is a heat-stable protein, but its antiheparin activity and antigenicity are destroyed by trypsin. The molecular weight...
متن کاملFlow Cytometric Measurement of CD41/CD61 and CD42b Platelet Receptors and Clotting Assay of Platelet Factor 3 During Long Term-Storage of Platelet Concentrates
Background: The purpose of the present in vitro study was to evaluate the effect of long term storage of conventional platelet concentrates (PCs) on major platelet receptors CD42b and CD41/CD61 by flow cytometry method and also measuring the overall platelet procoagulant activity status using platelet factor 3 (PF3) assay. Materials and Methods: Six random units of conventional platelet conce...
متن کاملEvaluation of microRNAs; mir223, mir222 and mir92a levels in the Platelet-derived microparticles in the Platelet concentrates produced by Platelet Rich Plasma method during storage
Abstract Background and Objectives Platelets release microparticles containing cellular components, including microRNAs, during storage. Assessment of these microRNAs is one of the markers for evaluation of platelet storage lesions. The aim of the present study was to evaluate the level of changes in the expression of mir-223, mir-92a and mir-222 during storage in platelets prepared by platele...
متن کاملHeparin Neutralization by Platelet-Rich Thrombi
Background Platelets contain several factors that inhibit heparin. This study was designed to assess the heparinneutralizing activity present in acute, platelet-rich arterial thrombi formed at sites of arterial injury in animals. Methods and Results Platelet-rich thrombi (n=3) were induced in pig coronary arteries by balloon catheter-mediated arterial injury. Soluble extracts were prepared from...
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عنوان ژورنال:
- Blood
دوره 44 2 شماره
صفحات -
تاریخ انتشار 1974