期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 390, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2023.134044
关键词
Cardiac troponin I; Myoglobin; Polydopamine; Metal ions; Electrochemical aptasensor
A sandwich-type electrochemical aptasensor was constructed for the simultaneous detection of cardiac troponin I (cTnI) and myoglobin (Myo). The aptasensor demonstrated excellent performance in clinical diagnosis of acute myocardial infarction. The results showed wide linear ranges and low detection limits, indicating the potential application of the aptasensor.
The determination of cardiac troponin I (cTnI) and myoglobin (Myo) is increasingly significant considering their potential in acute myocardial infarction (AMI) diagnosis. Here, we constructed a sandwich-type electrochemical aptasensor for the simultaneous detection of cTnI and Myo. The polydopamine-Au-metal ions (PDA-Au-Pb2+/ Cu2+) were synthesized and used as the labels of second aptamers (TrO6 and S232). The labels displayed different peaks at different potential sites, thus making the simultaneous detection method available. Meanwhile, the synthesized zirconium-based carbon architecture (CC) was well-conductive originating from the annealing process. After the modification of CC on the bare electrode (screen-printed carbon electrode, SPCE), the coralloid Au (CAu) was further decorated on the electrode by electro-deposition, thus forming CAu/CC/SPCE with high conductivity. Hence, the aptasensor proposed here showed admirable simultaneous quantitative analysis performance towards cTnI and Myo with wide linear ranges (1 & mu;g/mL-0.01 pg/mL, 1 & mu;g/mL-0.1 pg/mL) and low detection limits (3.8 fg/mL, 35 fg/mL). These results demonstrated that the aptasensor held the potential application in clinical diagnosis.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据