Integrated Point-of-Care Molecular Diagnostic Devices for Infectious Diseases

2021 ◽  
Author(s):  
Wenpeng Liu ◽  
Fei Yue ◽  
Luke P. Lee
Keyword(s):  
Infectious Diseases ◽  
Point Of Care ◽  
Molecular Diagnostic

scholarly journals CRISPR-Cas Systems for Diagnosing Infectious Diseases

2020 ◽  
Author(s):  
Anastasiya Kostyusheva ◽  
Sergey Brezgin ◽  
Yurii Babin ◽  
Irina Vasil'eva ◽  
Dmitry Kostyushev ◽  
...  
Keyword(s):  
Infectious Diseases ◽  
Molecular Diagnostics ◽  
Large Scale ◽  
Point Of Care ◽  
Disease Spread ◽  
Detection Methods ◽  
Epidemiological Surveillance ◽  
Molecular Diagnostic ◽  
Diagnostic Tools ◽  
Wide Range

Infectious diseases are a global health problem affecting billions of people. Developing rapid and sensitive diagnostic tools is key for successful patient management and curbing disease spread. Currently available diagnostics are very specific and sensitive but time-consuming and require expensive laboratory settings and well-trained personnel; thus, they are not available in resource-limited areas, for the purposes of large-scale screenings and in case of outbreaks and epidemics. Developing new, rapid, and affordable point-of-care diagnostic assays is urgently needed. This review focuses on CRISPR-based technologies and their perspectives to become platforms for point-of-care nucleic acid detection methods and as deployable diagnostic platforms that could help to identify and curb outbreaks and emerging epidemics. We describe the mechanisms and function of different classes and types of CRISPR-Cas systems, including pros and cons for developing molecular diagnostic tests and applications of each type to detect a wide range of infectious agents. Many Cas proteins (Cas9, Cas12, Cas13, Cas14) have been leveraged to create highly accurate and sensitive diagnostic tools combined with technologies of signal amplification and fluorescent, potentiometric, colorimetric, or lateral flow assay detection. In particular, the most advanced platforms -- SHERLOCK/v2, DETECTR, or CRISPR-Chip -- enable detection of attomolar amounts of pathogenic nucleic acids with specificity comparable to that of PCR but with minimal technical settings. Further developing CRISPR-based diagnostic tools promises to dramatically transform molecular diagnostics, making them easily affordable and accessible virtually anywhere in the world. The burden of socially significant diseases, frequent outbreaks, recent epidemics (MERS, SARS and the ongoing coronoviral nCov-2019 infection) urgently need the developing of express-diagnostic tools. Recently devised CRISPR-technologies represent the unprecedented opportunity to reshape epidemiological surveillance and molecular diagnostics.

scholarly journals Clinical Performance of the cobas Liat SARS-CoV-2 & Influenza AB for the Detection of SARS-CoV-2 in Nasal Samples

2022 ◽  
Author(s):  
Yusaku Akashi ◽  
Michiko Horie ◽  
Junichi Kiyotaki ◽  
Yuto Takeuchi ◽  
Kenichi Togashi ◽  
...  
Keyword(s):  
Infectious Diseases ◽  
Diagnostic Tests ◽  
Clinical Utility ◽  
Clinical Performance ◽  
Point Of Care ◽  
Concordance Rate ◽  
Molecular Diagnostic ◽  
Molecular Assays ◽  
High Concordance

Background and Objective: Point-of-care type molecular diagnostic tests have been used for detecting SARS-CoV-2, although their clinical utility with nasal samples has yet to be established. This study evaluated the clinical performance of the cobas Liat SARS-CoV-2 & Influenza AB (Liat) in nasal samples. Methods: Nasal and nasopharyngeal samples were collected and were tested using the Liat, the cobas 6800 system and the cobas SARS-CoV-2 & Influenza AB (cobas), and a method developed by National Institute of Infectious Diseases, Japan (NIID). Results: A total of 814 nasal samples were collected. The Liat assay was positive for SARS-CoV-2 in 113 (13.9%). The total, positive, and negative concordance rate between the Liat and cobas/NIID assays were 99.3%/98.4%, 99.1%/100%, and 99.3%/98.2%, respectively. Five samples were positive only using the Liat assay. Their Ct values ranged from 31.9 to 37.2. The Ct values of the Liat assay were significantly lower (p < 0.001) but were correlated (p < 0.001) with those of other molecular assays. In the participants who tested positive for SARS-CoV-2 on the Liat assay using nasopharyngeal samples, 88.2% of their nasal samples also tested positive using the Liat assay. Conclusion: The Liat assay showed high concordance with other molecular assays in nasal samples. Some discordance occurred in samples with Ct values > 30 on the Liat assay.

Molecular diagnostic of toxigenic Corynebacterium diphtheriae strain by DNA sensor potentially suitable for electrochemical point-of-care diagnostic

Talanta ◽  
2021 ◽  
Vol 227 ◽  
pp. 122161
Author(s):  
Kasper Marchlewicz ◽  
Iga Ostrowska ◽  
Sławomir Oszwałdowski ◽  
Aleksandra Zasada ◽  
Robert Ziółkowski ◽  
...  
Keyword(s):  
Point Of Care ◽  
Corynebacterium Diphtheriae ◽  
Molecular Diagnostic ◽  
Dna Sensor

scholarly journals Turntable Paper-Based Device to Detect Escherichia coli

Micromachines ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 194
Author(s):  
Yung-Chih Wang ◽  
Yao-Hung Tsai ◽  
Ching-Fen Shen ◽  
Ming-Yao He ◽  
Yi-Chen Fu ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Infectious Diseases ◽  
Point Of Care ◽  
Multiple Integral ◽  
Enzyme Linked Immunosorbent Assay ◽  
Considerable Time ◽  
E Coli ◽  
Colony Forming Unit ◽  
Experimental Implementation ◽  
Colony Forming Units

Escherichia coli has been known to cause a variety of infectious diseases. The conventional enzyme-linked immunosorbent assay (ELISA) is a well-known method widely used to diagnose a variety of infectious diseases. This method is expensive and requires considerable time and effort to conduct and complete multiple integral steps. We previously proposed the use of paper-based ELISA to rapidly detect the presence of E. coli. This approach has demonstrated utility for point-of-care (POC) urinary tract infection diagnoses. Paper-based ELISA, while advantageous, still requires the execution of several procedural steps. Here, we discuss the design and experimental implementation of a turntable paper-based device to simplify the paper-based ELISA protocols for the detection of E. coli. In this process, antibodies or reagents are preloaded onto zones of a paper-based device and allowed to dry before use. We successfully used this device to detect E. coli with a detection limit of 105 colony-forming units (colony-forming unit [CFU])/mL.

scholarly journals Modular development of a prototype point of care molecular diagnostic platform for sexually transmitted infections

2016 ◽  
Vol 38 (8) ◽  
pp. 741-748 ◽  
Author(s):  
Manoharanehru Branavan ◽  
Ruth E. Mackay ◽  
Pascal Craw ◽  
Angel Naveenathayalan ◽  
Jeremy C. Ahern ◽  
...  
Keyword(s):  
Sexually Transmitted Infections ◽  
Point Of Care ◽  
Molecular Diagnostic ◽  
Sexually Transmitted

Smartphone controlled platform for point-of-care diagnosis of infectious diseases

2014 ◽  
Author(s):  
Francisco Salomon ◽  
Salvador Tropea ◽  
Diego Brengi ◽  
Ariel Hernandez ◽  
Diego Alamon ◽  
...  
Keyword(s):  
Infectious Diseases ◽  
Point Of Care

Analysis of the tendency of development of biosensors based on GaN

2021 ◽  
Author(s):  
S.I. Agasieva ◽  
E.A. Smetanin ◽  
A.R. Vechkanov ◽  
A.V. Gubanov
Keyword(s):  
Clinical Trials ◽  
Infectious Diseases ◽  
Diagnostic Tests ◽  
Diagnostic Testing ◽  
Healthcare Systems ◽  
Clinical Analysis ◽  
Molecular Diagnostic ◽  
Economic Damage ◽  
Disease Research ◽  
Local Healthcare

Statement of the problem of this article - one of the most important problems is protection from especially dangerous infectious diseases. The use of biosensors in clinical trials will significantly reduce the time for obtaining the results of analyzes, thereby speeding up the appointment of treatment to patients. The purpose of the article is to present modern designs of biosensors based on gallium nitride, the possibilities of their application and characteristics. Consider the principles of operation, areas of application and characteristics. As a result, the design of modern biosensors and modern trends in their use from various sources of literature in recent years are shown. Biosensors, principles of their action, areas of application and characteristics are considered, which will reduce the possible socio-economic damage from temporary disability for sick citizens due to the rapid and timely implementation of anti-epidemic measures. Practical value: the proposed biosensors are of interest as devices for detecting diseases. The use of biosensors in clinical disease research has several potential advantages over other clinical analysis methods, including increased analysis speed and flexibility, multipurpose analysis capability, automation, reduced diagnostic testing costs, and the ability to integrate molecular diagnostic tests into local healthcare systems.

Point-of-care molecular diagnostic devices: an overview

2015 ◽  
Vol 16 (12) ◽  
pp. 1399-1409 ◽  
Author(s):  
Chi Lan Nguyen Vu ◽  
Jianxiong Chan ◽  
Marian Todaro ◽  
Stan Skafidas ◽  
Patrick Kwan
Keyword(s):  
Point Of Care ◽  
Molecular Diagnostic
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