Relationship of platelet microparticle CD62P and activated GP IIb/IIIa with hypercoagulable state after atrial fibrillation radiofrequency catheter ablation

X.-Z. Zhang, A.-G. Liu, M.-L. Guo, J. Guan, S.-L. Cai, Q. Du, C.-Y. Zhou

Department of Emergency Internal Medicine, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China. liuaiguobbr@sina.com

---

• Cardiology

OBJECTIVE: The morbidity of atrial fibrillation (AF) is 1%-2% in clinic. Radiofrequency catheter ablation (RFCA) is a type of radical interventional therapy for AF, whereas it may lead to a hypercoagulable state. This study evaluated platelet particle CD62P and platelet activation biomarker GP IIb/IIIa expressions in AF patients treated by RFCA, and aimed to analyze their relationships with the hypercoagulable state after RFCA.

PATIENTS AND METHODS: A total of 60 AF patients received RFCA in our hospital were enrolled. The patients were divided into group A as hypercoagulable state group and group B as non-hypercoagulable group. Healthy volunteers were selected as normal control. Serum D-Dimer, parathyroid activity index 1 (PAI-1), and tissue plasminogen activator (t-PA) content were tested by using enzyme-linked immunosorbent assay (ELISA), while peripheral CD62P and GP IIb/IIIa expressions were detected by using flow cytometry before, after, and seven days after RFCA.

RESULTS: D-Dimer and PAI-1 levels increased, while t-PA reduced in group A compared with that in group B and control (p<0.05). D-Dimer and t-PA contents gradually elevated, whereas t-PA level gradually declined in group A before, after, and seven days after RFCA (p<0.05). Serum CD62P and GP IIb/IIIa expressions in group A were significantly higher compared to that in group B and control (p<0.05). CD62P and GP IIb/IIIa levels were significantly higher seven days after RFCA compared with immediate after RFCA in group A (p<0.05). CD62P showed a positive correlation with GP IIb/IIIa in hypercoagulable state patients after RFCA (p<0.05).

CONCLUSIONS: AF patient may appear in hypercoagulable state after RFCA. CD62P and GP IIb/IIIa significantly increased and exhibited a positive correlation.

Free PDF Download