Correlation between in vitro aggregation and thromboxane A2 production in fresh, liquid-preserved, and cryopreserved human platelets: effect of agonists, pH, and plasma and saline resuspension
العنوان: | Correlation between in vitro aggregation and thromboxane A2 production in fresh, liquid-preserved, and cryopreserved human platelets: effect of agonists, pH, and plasma and saline resuspension |
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المؤلفون: | C. R. Valeri, Gina Ragno, H. MacGregor |
المصدر: | Transfusion. 45:596-603 |
بيانات النشر: | Wiley, 2005. |
سنة النشر: | 2005 |
مصطلحات موضوعية: | Blood Platelets, Platelet Aggregation, Thromboxane, Immunology, Platelet Transfusion, In Vitro Techniques, Sodium Chloride, Pharmacology, Cryopreservation, Plasma, Thromboxane A2, chemistry.chemical_compound, In vivo, Humans, Immunology and Allergy, Platelet, Arachidonic Acid, Dimethyl sulfoxide, Hematology, Hydrogen-Ion Concentration, Adenosine Diphosphate, Adenosine diphosphate, Biochemistry, Eicosanoid, chemistry, Blood Preservation |
الوصف: | BACKGROUND: Some of the tests used to assess the quality of fresh and preserved platelets (PLTs) include PLT number, PLT morphology, pH of the PLT medium, PLT response to hypotonic stress, and PLT aggregation to agonists. This study was performed to assess the function of fresh and preserved PLTs by their response to aggregation and their production of thromboxane A2 after in vitro stimulation with agonists. STUDY DESIGN AND METHODS: PLTs isolated by apheresis procedures were stored at 22°C for as long as 5 days and then frozen with 6 percent dimethyl sulfoxide, stored at −80°C, thawed, washed, and resuspended in medium. The effects of agonists and the pH and composition of the medium on PLT aggregation and PLT production of thromboxane A2 after stimulation were measured. RESULTS: The agonists and the pH and composition of the medium affected both the aggregation response and the production of thromboxane A2 by the fresh and preserved PLTs. PLT aggregation response to arachidonic acid (AA) and adenosine diphosphate (ADP) was significantly lower in the cryopreserved PLTs than in the fresh and preserved PLTs. After stimulation with AA and ADP, the cryopreserved PLTs produced more thromboxane than did the fresh and liquid-preserved PLTs. CONCLUSIONS: The agonists and the pH and composition of the medium affected the response to aggregate and produce thromboxane in vitro in both the fresh and the liquid-preserved PLTs. PLT thromboxane A2 production may be a better in vitro test than PLT aggregation to assess PLT function in vivo. |
تدمد: | 1537-2995 0041-1132 |
DOI: | 10.1111/j.0041-1132.2005.04291.x |
URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a97f141f625e7e87e130c8add4dd5f75 https://doi.org/10.1111/j.0041-1132.2005.04291.x |
Rights: | CLOSED |
رقم الانضمام: | edsair.doi.dedup.....a97f141f625e7e87e130c8add4dd5f75 |
قاعدة البيانات: | OpenAIRE |
تدمد: | 15372995 00411132 |
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DOI: | 10.1111/j.0041-1132.2005.04291.x |