Development of a sugar-derived silver nanoparticle-based electrochemical immunosensor for sensitive D-dimer detection
Yazarlar (3)
Fatma Öztürk Kırbay
Ege Üniversitesi, Türkiye
Prof. Dr. İdris YAZGAN Kastamonu Üniversitesi, Türkiye
Prof. Dr. Dilek Odacı Demirkol Ege Üniversitesi, Türkiye
Makale Türü Açık Erişim Özgün Makale (SCOPUS dergilerinde yayınlanan tam makale)
Dergi Adı Sensors International
Dergi ISSN 2666-3511 Scopus Dergi
Dergi Tarandığı Indeksler esci
Makale Dili İngilizce Basım Tarihi 03-2025
Cilt / Sayı / Sayfa 6 / 1 / 100332–0 DOI 10.1016/j.sintl.2025.100332
Makale Linki https://doi.org/10.1016/j.sintl.2025.100332
UAK Araştırma Alanları
Biyokimya Analitik Kimya
Özet
D-dimer (DD) is a key marker of coagulation and fibrinolysis activation. Clinicians can make important decisions with the aid of quick analysis and quantification, ideally at the patient's bedside. Electrochemical immunosensors are effective point-of-care technologies to address these issues. Here, we describe the development of a simple electrochemical immunosensor to detect DD. The immunosensor is constructed by electrodeposition of lactose methoxide aniline silver nanoparticles (LMA-AgNPs) on a screen-printed carbon electrode (SPCE). The LMA-AgNP and SPCE/LMA-AgNP were characterized by Fourier transform infrared (FTIR) spectroscopy, high-resolution transmission electron microscopy (HR-TEM), scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDS), and X-ray photoelectron spectroscopy (XPS). The electrochemical behavior of the SPCE/LMA-AgNP was examined using electrochemical impedance spectroscopy (EIS), differential pulse voltammetry (DPV), and cyclic voltammetry (CV). Then, Anti-D-Dimer antibody (Anti-DD) was immobilized on SPCE/LMA-AgNP. Along with the analytical characterization of the SPCE/LMA-AgNP/Anti-DD immunosensor, the linear range for DD, limit of detection (LOD), potential chemical interferences, and real sample applications were also evaluated. The antigen/antibody interaction at various DD concentrations was monitored using DPV. The SPCE/LMA-AgNP/Anti-DD shows a linear response in the DD concentration range of 0.01–1 pg/mL and a LOD of 0.2 fg/mL. In addition, the SPCE/LMA-AgNP/Anti-DD showed excellent specificity and no response to potential interfering substances, for instance urea, insulin, C-reactive protein (CRP), and serum amyloid A (SAA). Eventually, the SPCE/LMA-AgNP/Anti-DD is applied in human serum, which shows good recovery values (97.2 %). The SPCE/LMA-AgNP/Anti-DD can be fabricated cheaply and easily for bedside clinical evaluation.
Anahtar Kelimeler
Biomarker | D-dimer | Electrodeposition | Immunosensor | Silver nanoparticle