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A fast screening method for the detection of CERA in dried blood spots
Drug Testing and Analysis ( IF 2.6 ) Pub Date : 2021-08-11 , DOI: 10.1002/dta.3142
Angela Rocca 1 , Laurent Martin 2 , Tiia Kuuranne 1 , Magnus Ericsson 2 , Alexandre Marchand 2 , Nicolas Leuenberger 1
Affiliation  

Continuous erythropoietin receptor activator (CERA) is a third-generation erythropoiesis-stimulating agent that was developed for the treatment of anemia. However, misuse of CERA for doping in endurance sports has been reported. Previous studies have shown blood as the matrix of choice for the detection of CERA, due to its high molecular weight. The use of dried blood spots (DBSs) for anti-doping purposes constitutes a complementary approach to the standard urine and venous blood matrices and could facilitate sample collection and increase the number of blood samples available for analysis due to reduced costs of sample collection and transport. Here, we investigated whether CERA could be indirectly detected in extracts of single DBSs using an erythropoietin-specific immunoassay that is capable of providing results within approximately 2 h. Reconstituted DBS samples were prepared from mixtures of red blood cell pellets and serum samples. The samples were collected in a previous clinical study in which six healthy volunteers were injected with a single, 200 μg dose of CERA. Using a commercially available ELISA kit, CERA was detected in the DBSs with a detection window of up to 20 days post-injection. Furthermore, in order to demonstrate the fitness-for-purpose, three authentic doping control serum samples, which were identified as containing CERA, were analyzed by the presented methodological approach on DBS. The testing procedure described here could be used as a fast and cost-effective method for the detection of CERA abuse in sport.

中文翻译:

一种快速筛查干血斑中 CERA 的方法

连续促红细胞生成素受体激活剂 (CERA) 是第三代红细胞生成刺激剂,用于治疗贫血。然而,有报道称在耐力运动中滥用 CERA 兴奋剂。先前的研究表明,血液是检测 CERA 的首选基质,因为它的分子量很高。将干血斑 (DBS) 用于反兴奋剂目的是对标准尿液和静脉血基质的补充方法,由于降低了样本采集和运输的成本,可以促进样本采集并增加可用于分析的血液样本数量. 在这里,我们研究了是否可以使用能够在大约 2 小时内提供结果的促红细胞生成素特异性免疫测定法在单个 DBS 提取物中间接检测到 CERA。由红细胞沉淀和血清样品的混合物制备重构的 DBS 样品。这些样本是在之前的一项临床研究中收集的,在该研究中,六名健康志愿者被注射了单次 200 μg 剂量的 CERA。使用市售的 ELISA 试剂盒,在 DBS 中检测到 CERA,检测窗口长达注射后 20 天。此外,为了证明适用性,三个真实的兴奋剂对照血清样本被确定为含有 CERA,并通过 DBS 上提出的方法学方法进行了分析。此处描述的测试程序可用作检测运动中 CERA 滥用的快速且具有成本效益的方法。这些样本是在之前的一项临床研究中收集的,在该研究中,六名健康志愿者被注射了单次 200 μg 剂量的 CERA。使用市售的 ELISA 试剂盒,在 DBS 中检测到 CERA,检测窗口长达注射后 20 天。此外,为了证明适用性,三个真实的兴奋剂对照血清样本被确定为含有 CERA,并通过 DBS 上提出的方法学方法进行了分析。此处描述的测试程序可用作检测运动中 CERA 滥用的快速且具有成本效益的方法。这些样本是在之前的一项临床研究中收集的,在该研究中,六名健康志愿者被注射了单次 200 μg 剂量的 CERA。使用市售的 ELISA 试剂盒,在 DBS 中检测到 CERA,检测窗口长达注射后 20 天。此外,为了证明适用性,三个真实的兴奋剂对照血清样本被确定为含有 CERA,并通过 DBS 上提出的方法学方法进行了分析。此处描述的测试程序可用作检测运动中 CERA 滥用的快速且具有成本效益的方法。为了证明适用性,三个真实的兴奋剂对照血清样本被确定为含有 CERA,并通过 DBS 上提出的方法学方法进行了分析。此处描述的测试程序可用作检测运动中 CERA 滥用的快速且具有成本效益的方法。为了证明适用性,三个真实的兴奋剂对照血清样本被确定为含有 CERA,并通过 DBS 上提出的方法学方法进行了分析。此处描述的测试程序可用作检测运动中 CERA 滥用的快速且具有成本效益的方法。
更新日期:2021-08-11
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