Analyte-resolved magnetoplasmonic nanocomposite to enhance SPR signals and dual recognition strategy for detection of BNP in serum samples

Magnet-assisted electrochemical immunosensor based on surface-clean Pd-Au nanosheets for sensitive detection of SARS-CoV-2 spike protein

“…This is due to the large surface area of the Pd-Au nanosheets, which increased the contact and penetration sensitivity of [Fe(CN) 6 ] 3-/4− . The modification of antibody and BSA as a blocking agent resulted in an increase (∆R ct = 107 Ω) in Rct and a decrease in CV peak current, indicating that this process hindered the reversible delivery of the redox probe [ 35 , 41 ]. However, the process exhibited lower spikes.…”

“…The glassy carbon electrode (GCE) was pretreated according to our previous procedure [ 35 , 36 ]. Next, 20 μL of 1 mg mL −1 Pd-Au nanosheets was cast on the surface of the GCE and dried at 40°C.…”

Recent Advances in Aptamer Sensors

“…Another technique is based on the increase in charge transfer resistance via the impedance technique [174]. Therefore, an electrochemical aptasensor was provided for the detection of several targets, such as ampicillin (AMP), avian influenza virus (H5N1), carbohydrate antigen 125, Pb 2+ , lysozymes, insulin, thrombin, CD44, vanillin, circulating human MDA-MB-231 breast cancer cells, bisphenol A, furaneol, and Hg 2+ , among others [8,46,[175][176][177][178][179][180][181][182][183][184][185][186][187][188][189].…”

Biosensors Made of Synthetic Functional Nucleic Acids Toward Better Human Health

“…Fewer studies examined biosensors for biomarkers of cardiovascular disease and congestive heart failure, which include C-reactive protein (CRP), N-terminal pro b-type natriuretic peptide (NT-proBNP), − and fibrinogen . In fact, one study looked at using a microfluidic device to detect these three biomarkers in addition to cTnI in a single assay .…”