Journal
JOURNAL OF MATERIALS RESEARCH
Volume -, Issue -, Pages -Publisher
SPRINGER HEIDELBERG
DOI: 10.1557/s43578-023-01241-0
Keywords
Cholesterol; Molecular imprinting; Cardiovascular diseases; Microchip; Biomarkers
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Molecularly imprinted polymers (MIP) based on biomimetic approaches have been shown to create highly specific receptor materials. We developed a biosensor based on MIP for the selective detection of cholesterol and tested it in synthetic media as well as in human blood sera. The biosensor demonstrated a good linear relationship with cholesterol concentration, low detection limit, and promising clinical recovery rate.
Molecularly imprinted polymers (MIP) based on biomimetic approaches have proven their capabilities for creating highly specific receptor materials. We developed and investigated a biosensor based on MIP for the selective detection of cholesterol in synthetic media as well as in human blood sera. The surface roughness of imprinted interface increased to 4 nm as compared to non-imprinted indicating the presence of cholesterol-specific cavities. The concentration of cholesterol was related to the flow of charge across the interface of microchip. The biosensor showed a good linear relationship with the concentration of cholesterol ranging from 0.01 to 1 mM with a low limit of detection as 0.31 mM. The interface specifically recognized cholesterol three times as compared to cholecalciferol. The average clinical recovery rate of 98.81% indicates promising potential for an alternate to enzymatic biosensors for the determination of cholesterol.
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