血小板生成素及血小板生成素Ⅱ对人血小板活化的影响

目的:检测血小板生成素(TPO)及TPOⅡ在体外对人血小板活化的影响。方法:取正常健康成人富血小板血浆,分别与血小板生成素(rhTPO)、TPOⅡ及磷酸盐溶液孵化,通过荧光单克隆抗体标记血小板表面CD62P及CD41分子,用流式细胞术测定CD62P/CD41比率,观察各组血小板活化率。结果:rhTPO、TPOⅡ组血小板活化率与PBS组无明显差异,P＞0.05。结论:血小板生成素不会导致血小板异常活化,可应用于血小板生成减少的各种情况。

Effects of thrombopoietinand thrombopoietin

AIM:To investigate effects of thrombopoietin(TPO) and TPOⅡ on human platelet activation in vitro. METHODS:Human platelets were incubated in the phosphate-buffered saline containing rhTPO or TPOⅡ at the concentration of 100 μg/L for five minutes. In order to determine the rate of platelet activation. The CD62P and CD41 expressions on platelets were analysed by flow cytometry using fluorescence labelled monoclonal antibody to CD62P and CD41. RESULTS:The results demonstrated that expression of CD62P on platelets which were incubated with rhTPO or TPOⅡ didn't increase compared with that of contrast group. CONCLUSION:Both rhTPO and TPOⅡdidn't cause the disorder of platelet activation.