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Reference type: Journal
Authors: Kumar N, Rosy, Goyal RN
Article Title: A melamine based molecularly imprinted sensor for the determination of 8-hydroxydeoxyguanosine in human urine.
Publication date: 2017
Journal: Talanta
Volume: 166
Page numbers: 215-222.
DOI: 10.1016/j.talanta.2017.01.058
Alternative URL: http://www.sciencedirect.com/science/article/pii/S0039914017301686

Abstract: A sensitive and facile molecular imprinted sensor has been fabricated using edge plane pyrolytic graphite (EPPG) for the determination of an important oxidative DNA damage product, 8-hydroxydeoxyguanosine (8-OHdG). The molecularly imprinted polymer film was fabricated by electropolymerization of melamine in the presence of 8-OHdG, on glutaraldehyde/poly 1,5-diaminonaphthalene modified EPPG. The imprinted sensor surface was characterized by using Field Emission Scanning Electron Microscopy, Electron Impedance Spectroscopy, Cyclic Voltammetry, Square Wave Voltammetry and UV-visible spectroscopy. The calibration response was linear over a concentration range of 20 x 10-9 - 3 x 10-6 M of 8-OHdG with sensitivity and limit of detection (3σ/b) as 10.59 μM/μA and 3 x 10-9 M respectively. The common metabolites in urine, like uric acid, ascorbic acid, xanthine, hypoxanthine do not interfere up to 100-fold concentration. The imprinted sensor is also successfully employed for the determination of 8-OHdG in human urine sample of a renal failure patient
Template and target information: 8-hydroxydeoxyguanosine, 8-OHdG
Author keywords: 8-Hydroxydeoxyguanosine, 1,5-Diaminonaphthalene, glutaraldehyde, Melamine, Molecular imprinted technique, human urine


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