Polski merkuriusz lekarski : organ Polskiego Towarzystwa Lekarskiego · 2005
[Platelets and platelet microparticles glycoprotein IIb/IIIa complex in patients with unstable angina].
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Dymicka-Piekarska Violetta, Kemona Halina, Butkiewicz Anna, Bychowski Jerzy
Аннотация
UNLABELLED: Platelet activation is known to play a key role in pathogenesis of acute coronary syndrome (ACS). Platelet activation leads to increased numbers of glycoprotein (GP) IIb/IIIa complex on the platelet membrane. On the other side antiplatelet therapy in patient with unstable angina can suppress the actions of platelet.
THE AIM: To estimate by flow cytometry GP IIb/IIIa expression on the platelets and platelet microparticles membrane.
MATERIAL AND METHODS: The study involved 21 patients with unstable angina, before (group B1) and after treatment (group B2). All subjects received aspirin, heparin (Clexane) and b-blocker. The control group consisted of 24 healthy subjects.
RESULTS: Patients with unstable angina in group B1 were by 12% higher expression of GP IIb/IIIa than control group (62.6 vs 55.1%). In group B2- before treatment- the percentage of platelet expressing GP IIb/IIIa was lower (60.1%) than in the group B1. In both groups, B1 and B2, percentage of platelet microparticles expressions GP IIb/IIIa was elevated 8.5% and it was significantly higher than in the control group (5.3%).
CONCLUSIONS: Our study show that patients with unstable angina had a higher expression GP IIb/IIIa on the platelets membrane and elevated percentage of platelet microparticles confirm platelet activation. There was no significantly different in platelet GP IIb/IIIa expression after the antiplatelet therapy in patients with unstable angina.
THE AIM: To estimate by flow cytometry GP IIb/IIIa expression on the platelets and platelet microparticles membrane.
MATERIAL AND METHODS: The study involved 21 patients with unstable angina, before (group B1) and after treatment (group B2). All subjects received aspirin, heparin (Clexane) and b-blocker. The control group consisted of 24 healthy subjects.
RESULTS: Patients with unstable angina in group B1 were by 12% higher expression of GP IIb/IIIa than control group (62.6 vs 55.1%). In group B2- before treatment- the percentage of platelet expressing GP IIb/IIIa was lower (60.1%) than in the group B1. In both groups, B1 and B2, percentage of platelet microparticles expressions GP IIb/IIIa was elevated 8.5% and it was significantly higher than in the control group (5.3%).
CONCLUSIONS: Our study show that patients with unstable angina had a higher expression GP IIb/IIIa on the platelets membrane and elevated percentage of platelet microparticles confirm platelet activation. There was no significantly different in platelet GP IIb/IIIa expression after the antiplatelet therapy in patients with unstable angina.