Ratiometric Fluorescent Lateral Flow Immunoassay for Point-of-Care Testing of Acute Myocardial Infarction.
Angew Chem Int Ed Engl
; 60(23): 13042-13049, 2021 06 01.
Article
in En
| MEDLINE
| ID: mdl-33793060
ABSTRACT
We report the development of a highly sensitive ratiometric fluorescent lateral flow immunoassay (RFLFIA) strip for rapid and accurate detection of acute myocardial infarction biomarker, namely heart-type fatty acid binding protein (H-FABP). The RFLFIA strip works in terms of ratiometric change of fluorescence signal, arising from blending of fluorescence emitted by two composite nanostructures conjugated to capture and probe antibodies and inner filter effect of gold nanoparticles. In conjunction with using custom smartphone-based analytical device and tonality analysis, quantitative detection of H-FABP was achieved with a low limit of detection at 0.21â
ng mL-1 . The RFLFIA strip can generate a visually distinguishable green-to-red color change around the threshold concentration of H-FABP (6.2â
ng mL-1 ), thus allowing the semi-quantitative diagnosis by the naked eye.
Key words
Full text:
1
Database:
MEDLINE
Main subject:
Fluorescent Antibody Technique
/
Fluorescent Dyes
/
Point-of-Care Testing
/
Fatty Acid Binding Protein 3
/
Myocardial Infarction
Type of study:
Diagnostic_studies
Limits:
Humans
Language:
En
Year:
2021
Type:
Article