RT Journal Article
T1 Amperometric immunosensor for the determination of ceruloplasmin in human serum and urine based on covalent binding to carbon nanotubes-modified screen-printed electrodes
A1 Garcinuño, Belit
A1 Ojeda Fernández, Irene
A1 Moreno Guzmán, María
A1 González Cortés, Araceli
A1 Yáñez-Sedeño Orive, Paloma
A1 Pingarrón Carrazón, José Manuel
AB A novel electrochemical immunosensor for the determination of ceruloplasmin (Cp) in human serum and urine is reported. The immunosensor configuration involves an indirect competitive immunoassay implying covalent immobilization of Cp on activated carboxylic groups at carbon nanotubes-modified screen-printed electrodes (CNTs/SPE). After Cp immobilization and reaction between the target analyte and anti-ceruloplasmin antibodies in solution, the remaining non-conjugated antibody is attached on the Cp-CNTs modified electrode. Monitoring of Cp is performed by means of a secondary antibody labeled with peroxidase (HRP-anti-IgG) and measurement of the amperometric current resulting from the addition of hydrogen peroxide in the presence of hydroquinone as the redox mediator. The experimental variables affecting the analytical performance of the immunosensor were optimized. Calibration curves for Cp provided a linear range between 0.07 and 250 μg/mL (r=0.997). The limit of detection achieved was 21 ng/mL. These analytical characteristics allow the immunosensor to be successfully used for the determination of Cp in spiked human serum and urine at various concentration levels
PB Elsevier
SN 0039-9140
YR 2013
FD 2013
LK https://hdl.handle.net/20.500.14352/91831
UL https://hdl.handle.net/20.500.14352/91831
LA eng
NO Garcinuño, B., et al. «Amperometric Immunosensor for the Determination of Ceruloplasmin in Human Serum and Urine Based on Covalent Binding to Carbon Nanotubes-Modified Screen-Printed Electrodes». Talanta, vol. 118, enero de 2014, pp. 61-67. https://doi.org/10.1016/j.talanta.2013.10.008.
NO Ministerio de Economia y ́Competitividad (España)
NO Comunidad de Madrid
DS Docta Complutense
RD 20 jul 2024