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• W4375845963 endingPage "341257" @default.
• W4375845963 startingPage "341257" @default.
• W4375845963 abstract "Electrochemical DNA sensors can be operated in either static or flow-based detection schemes. In static schemes, manual washing steps are still necessary, resulting in a tedious and time-consuming process. In contrast, in flow-based electrochemical sensors, the current response is collected when the solution flows through the electrode continuously. However, the drawback of such a flow system is the low sensitivity due to the limited time for the interaction between the capturing element and the target. Herein, we propose a novel electrochemical capillary-driven microfluidic DNA sensor to combine the advantages of static and flow-based electrochemical detection systems into a single device by incorporating burst valve technology. The microfluidic device with a two-electrode configuration was applied for the simultaneous detection of two different DNA markers, human immunodeficiency virus-1 (HIV-1) and hepatitis C virus (HCV) cDNA, via the specific interaction between pyrrolidinyl peptide nucleic acids (PNA) probes and the DNA target. The integrated system, while requiring a small sample volume (7 μL for each sample loading port) and less analysis time, achieved good performance in terms of the limits of detection (LOD) (3SDblank/slope) and quantification (LOQ) (10SDblank/slope) at 1.45 nM and 4.79 nM for HIV and 1.20 nM and 3.96 nM for HCV, respectively. The simultaneous detection of HIV-1 and HCV cDNA prepared from human blood samples showed results that are in complete agreement with the RT‒PCR assay. The results qualify this platform as a promising alternative for the analysis of either HIV-1/HCV or coinfection that can be easily adapted for other clinically important nucleic acid-based markers." @default.
• W4375845963 created "2023-05-10" @default.
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• W4375845963 date "2023-07-01" @default.
• W4375845963 modified "2023-09-30" @default.
• W4375845963 title "Electrochemical capillary-driven microfluidic DNA sensor for HIV-1 and HCV coinfection analysis" @default.
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• W4375845963 doi "https://doi.org/10.1016/j.aca.2023.341257" @default.
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