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[Detection of activated platelets by flow cytometry]
Rinsho Byori. the Japanese Journal of Clinical Pathology
|June 22, 1999
Summary
Flow cytometry using PAC-1 antibody effectively measures platelet activation by adenosine diphosphate (ADP). This method shows reduced PAC-1 binding in patients taking ticlopidine, indicating its potential for monitoring antiplatelet therapy.
Area of Science:
- Hematology
- Immunology
- Biochemistry
Context:
- Standard platelet function tests include bleeding time and platelet aggregometry.
- Flow cytometry offers a sensitive alternative for assessing platelet activation.
Purpose:
- To evaluate the utility of PAC-1 antibody binding via flow cytometry in assessing platelet activation by adenosine diphosphate (ADP).
- To determine if ADP-induced PAC-1 binding can be suppressed by antiplatelet drugs like ticlopidine.
Summary:
- Platelets in whole blood demonstrated PAC-1 binding upon activation with varying ADP concentrations.
- ADP-induced PAC-1 binding was significantly reduced in individuals treated with the oral antiplatelet drug ticlopidine.
- Whole blood flow cytometry minimizes artifacts and requires smaller sample volumes.
Impact:
- ADP-induced PAC-1 binding is a viable method for evaluating platelet activation and the efficacy of antiplatelet therapy.
- This technique holds promise for clinical settings involving platelet hyperreactivity or circulating activated platelets.