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Impact of Ultra-Sensitive technology and contemporary therapy on laboratory results

机译:超灵敏技术和当代疗法对实验室结果的影响

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摘要

The introduction of ultra-sensitive labels for immunoassays has exposed some of the limitations inherent in them. Thus, for instance a major problem with acridinium esters used, as chemiluminescence label is the formation of the so called “pseudobases” at an alkaline pH, which if not suppressed can affect the rate of the chemiluminescence reaction. Chemiluminescence labels such as luminol can also be problematic when attached to antibodies and small molecules to the extent that the sensitivity of the assay can be reduced by the decrease in the intensity of chemiluminescence. The increased use of molecular methods such as polymerase chain reaction (PCR) and post PCR methods to study mutations have various pittalls, which if unrecognized and uncontrolled can lead to incorrect results and misinterpretation. Patients who are exposed to mouse immunoglobulins through imaging or therapeutic techniques can develop antibodies to mouse immunoglobulins (human anti-mouse antibodies or HAMA) which can be a major problem for non optimized immunoassays using murine monoclonal antibodies. The types of therapy such as anticoagulant used in anticoagulant therapy, blood substitute and drug therapy can impact on the measurements of some of the biochemical and other analytes. One must separate the transient, physiological effects introduced by therapy from long-term biochemical alterations due to disease.
机译:用于免疫测定的超灵敏标记的引入暴露了它们固有的一些局限性。因此,例如,使用a啶鎓酯作为化学发光标记的主要问题是在碱性pH下形成所谓的“假碱”,如果不加以抑制,则可能影响化学发光反应的速率。当连接至抗体和小分子时,化学发光标记(例如鲁米诺)也可能会出现问题,其程度是可以通过降低化学发光强度来降低测定的灵敏度。越来越多地使用诸如聚合酶链反应(PCR)和PCR后方法之类的分子方法来研究突变的方法有很多不同之处,如果无法识别和控制,可能会导致错误的结果和错误的解释。通过成像或治疗技术暴露于小鼠免疫球蛋白的患者可以产生针对小鼠免疫球蛋白的抗体(人抗小鼠抗体或HAMA),这对于使用鼠类单克隆抗体进行非优化免疫分析可能是一个主要问题。抗凝治疗,血液替代品和药物治疗中使用的抗凝剂等治疗类型可能会影响某些生化和其他分析物的测量。必须将治疗带来的短暂的生理效应与疾病引起的长期生化改变区分开来。

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