Reverse-Transcription Loop-Mediated Isothermal Amplification and alternative protocols for lower cost, large-scale COVID-19 testing: lessons from an emerging economy

 

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Autores: Segura-Ulate, Ismael, Bolívar-González, Alejandro, Madrigal-Redondo, Germán, Nuñez-Corrales, Santiago, Gatica-Arias, Andrés
Formato: artículo original
Estado:Versión publicada
Fecha de Publicación:2022
Descripción:Introduction: Most successful cases of COVID-19 pandemic mitigation and handling have relied on extensive reverse-transcription quantitative polymerase chain reaction (RT-qPCR). However, many emerging economies have struggled with current molecular testing demands due to economic, technical and technological constraints. Objective: To define a potential diagnostic protocol to increase testing capacity in current and post-pandemic conditions. Methods: We reviewed the literature, patents and commercial applications, for alternatives. Results: We found a good potential in saliva samples, viral inactivation and quick RNA extraction by heating; the use of an isothermal technology such as loop mediated isothermal amplification (LAMP) and naked eye test-result visualization by in-tube colorimetry or turbidity. Conclusions: Saliva samples with quick RNA extraction by heating and colorimetric LAMP are promising options for countries with economic and infrastructure limitations.
País:Portal de Revistas UCR
Institución:Universidad de Costa Rica
Repositorio:Portal de Revistas UCR
Lenguaje:Inglés
OAI Identifier:oai:portal.ucr.ac.cr:article/47407
Acceso en línea:https://revistas.ucr.ac.cr/index.php/rbt/article/view/47407
Palabra clave:emerging economies
molecular testing
SARS-CoV-2
saliva
loop mediated isothermal amplification
economías emergentes
pruebas moleculares
amplificación isotérmica mediada por bucle