Membrane-Based Microwave-Mediated Electrochemical Immunoassay for the In Vitro, Highly Sensitive Detection of Osteoporosis-Related Biomarkers.
Hye Youn KimShinobu SatoShigeori TakenakaTaesung KimPublished in: Sensors (Basel, Switzerland) (2018)
Highly sensitive and multiplexed in vitro detection of osteoporosis-related biochemical markers were carried out based on the membrane-based microwave-mediated electrochemical immunoassay (MMeEIA), where we can dramatically reduce the sample preparation time by shortening the incubation time of conjugation to obtain sensitive detection based on three dimensional conjugation of antibodies with target antigens in nylon membrane disk. C-terminal cross-linked telopeptide of type I collagen (CTx), Osteocalcin (OC), parathyroid hormone (PTH), and N-terminal propeptide of type I collagen (P1NP), which can be utilized to monitor the progress of osteoporosis, were quantified using their corresponding antibody immobilized in membranes. Coefficient of variations in this intra- and inter-assays were within 8.0% for all markers. When compared with data obtained from clinically used standard equipment (Roche modular E170), their coefficients of determination, R² values, are mostly more than 0.9. They show that the results obtained from MMeEIA are in good agreement with that from the conventional clinical instruments.
Keyphrases
- label free
- sensitive detection
- molecularly imprinted
- loop mediated isothermal amplification
- postmenopausal women
- bone mineral density
- solid phase extraction
- quantum dots
- ionic liquid
- gold nanoparticles
- high throughput
- radiofrequency ablation
- computed tomography
- real time pcr
- fluorescent probe
- high resolution
- machine learning
- patient reported outcomes
- tissue engineering
- data analysis
- multidrug resistant