Biochemia Medica:用低分子量肝素校准的显色性抗FXa检测的可能性和局限性

2020-02-17 MedSci MedSci原创

利伐沙班和阿哌沙班的临床应用不需要治疗性监测。目前,所有抗FXa药物的商业抗活化因子X (anti-FXa)抑制方法都基于相同的原理,因此,有研究尝试评估肝素校准抗FXa测定法作为直接FXa抑制剂替代方法的潜在临床应用价值。本研究旨在评估用低分子量肝素(LMWH)校准的抗FXa方法与用药物特异性校准的方法之间的关系,并确定商业用低分子量肝素抗FXa检测是否可以用于排除临床相关浓度的利伐沙班和阿哌沙

利伐沙班和阿哌沙班临床应用不需要治疗性监测。目前,所有抗FXa药物的商业抗活化因子X (anti-FXa)抑制方法都基于相同的原理,因此,有研究尝试评估肝素校准抗FXa测定法作为直接FXa抑制剂替代方法的潜在临床应用价值。本研究旨在评估用低分子量肝素(LMWH)校准的抗FXa方法与用药物特异性校准的方法之间的关系,并确定商业用低分子量肝素抗FXa检测是否可以用于排除临床相关浓度的利伐沙班和阿哌沙班的出现。

研究人员采用低分子量肝素校准试剂(德国Siemens Healthineers, Marburg)进行抗fxa活性检测。Innovance heparin (Siemens Healthineers, Marburg, Germany)用于FXa抑制剂的定量测定。

研究分析显示,LMWH校准的和利伐沙班校准的活性之间的良好一致性(κ= 0.76),与阿哌沙班的抗Xa活性之间的良好一致性(κ= 0.82)。低分子量肝素抗fxa活性截断值分别为0.05 IU/mL0.1 IU/mL,适用于排除利伐沙班和阿哌沙班的临床相关浓度(< 30 ng/mL)。浓度在300ng /mL以上,超过了低分子肝素抗fxa测定的上测量范围,不能用这种方法测定。

研究结果表明,低分子量肝素抗FXa检测可用于紧急临床条件,以排除临床相关浓度的利伐沙班和阿哌沙班。然而,使用低分子肝素抗fxa测定法作为一种可互换的定量测定方法仍不合适。

原始出处:

Sandra MargetićIvana ĆelapChromogenic anti-FXa assay calibrated with low molecular weight heparin in patients treated with rivaroxaban and apixaban: possibilities and limitations

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    2020-09-18 jeanqiuqiu
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    2020-08-25 sunylz
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