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Open AccessJournal ArticleDOI

On-Site Detection of SARS-CoV-2 Antigen by Deep Learning-Based Surface-Enhanced Raman Spectroscopy and Its Biochemical Foundations.

TLDR
In this article, a deep learning-based surface-enhanced Raman spectroscopy technique was developed for the sensitive, rapid, and on-site detection of the SARS-CoV-2 antigen in the throat swabs or sputum from 30 confirmed COVID-19 patients.
Abstract
A rapid, on-site, and accurate SARS-CoV-2 detection method is crucial for the prevention and control of the COVID-19 epidemic. However, such an ideal screening technology has not yet been developed for the diagnosis of SARS-CoV-2. Here, we have developed a deep learning-based surface-enhanced Raman spectroscopy technique for the sensitive, rapid, and on-site detection of the SARS-CoV-2 antigen in the throat swabs or sputum from 30 confirmed COVID-19 patients. A Raman database based on the spike protein of SARS-CoV-2 was established from experiments and theoretical calculations. The corresponding biochemical foundation for this method is also discussed. The deep learning model could predict the SARS-CoV-2 antigen with an identification accuracy of 87.7%. These results suggested that this method has great potential for the diagnosis, monitoring, and control of SARS-CoV-2 worldwide.

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Journal ArticleDOI

Label-Free Spectroscopic SARS-CoV-2 Detection on Versatile Nanoimprinted Substrates

TL;DR: A large-area and label-free testing platform that combines surface-enhanced Raman spectroscopy and machine learning for the rapid and accurate detection of SARS-CoV-2, and envision that it will offer an important tool for virus detection and future outbreak preparedness.
Journal ArticleDOI

Surface-enhanced Raman scattering-based immunoassay for severe acute respiratory syndrome coronavirus 2

TL;DR: A surface-enhanced Raman scattering (SERS)-based immunoassay involving an antibody pair, SERS-active hollow Au nanoparticles (NPs), and magnetic beads for the detection of SARS-CoV-2 was presented in this article .
Journal ArticleDOI

Performance of Antigen Detection Tests for SARS-CoV-2: A Systematic Review and Meta-Analysis

TL;DR: LFIA tests, though with moderate sensitivity, appear as the most attractive method for use in POCs and for performing seroprevalence studies, and rapid ATs show higher sensitivity in symptomatic patients compared to asymptomatic patients.
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Probing the mutation independent interaction of DNA probes with SARS-CoV-2 variants through a combination of surface-enhanced Raman scattering and machine learning

TL;DR: In this article , a set of DNA probes targeting a specific segment of the nucleocapsid phosphoprotein (N) gene of SARS-CoV-2 with high binding efficiency was developed.
Journal ArticleDOI

High-sensitivity and point-of-care detection of SARS-CoV-2 from nasal and throat swabs by magnetic SERS biosensor

TL;DR: In this article , a point-of-care detection method based on magnetic SERS biosensor composed of Fe3O4-Au nanocomposite and Au nanoneedles array was developed to detect SARS-CoV-2 directly.
References
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Journal ArticleDOI

Repurposed Antiviral Drugs for Covid-19 - Interim WHO Solidarity Trial Results.

Hongchao Pan, +73 more
TL;DR: These remdesivir, hydroxychloroquine, lopinavir, and interferon regimens had little or no effect on hospitalized patients with Covid-19, as indicated by overall mortality, initiation of ventilation, and duration of hospital stay.
Journal ArticleDOI

Real-time RT-PCR normalisation; strategies and considerations

TL;DR: This review discusses the relative merits of different normalisation strategies, suggests a method of validation that will enable the measurement of biologically meaningful results and discusses the popular practice of measuring an internal reference or housekeeping gene.
Journal ArticleDOI

Present and Future of Surface-Enhanced Raman Scattering

Judith Langer, +64 more
- 28 Jan 2020 - 
TL;DR: Prominent authors from all over the world joined efforts to summarize the current state-of-the-art in understanding and using SERS, as well as to propose what can be expected in the near future, in terms of research, applications, and technological development.
Journal ArticleDOI

Real-time PCR for mRNA quantitation.

TL;DR: This review discusses the key components of a real-time PCR experiment, including one-step or two-step PCR, absolute versus relative quantitation, mathematical models available for Relative quantitation and amplification efficiency calculations, types of normalization or data correction, and detection chemistries.
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