[HTML][HTML] Development of loop-mediated isothermal amplification–based lateral flow device method for the detection of malaria

PC Mallepaddi, MY Lai, S Podha, CH Ooi… - The American journal …, 2018 - ncbi.nlm.nih.gov
PC Mallepaddi, MY Lai, S Podha, CH Ooi, JWK Liew, R Polavarapu, YL Lau
The American journal of tropical medicine and hygiene, 2018ncbi.nlm.nih.gov
The present study aims to develop a method for rapid diagnosis of malaria using loop-
mediated isothermal amplification (LAMP) combined with a lateral flow device (LFD). By
adding the biotin-labeled and fluorescein amidite-labeled loop primers to the LAMP reaction
solution, the end product can be visualized on a LFD. The entire procedure takes
approximately 42 minutes to complete, LAMP assay exhibited high sensitivity, as the
detection limit was 0.01 pg/μL for all five Plasmodium species. It was demonstrated that all …
Abstract
The present study aims to develop a method for rapid diagnosis of malaria using loop-mediated isothermal amplification (LAMP) combined with a lateral flow device (LFD). By adding the biotin-labeled and fluorescein amidite-labeled loop primers to the LAMP reaction solution, the end product can be visualized on a LFD. The entire procedure takes approximately 42 minutes to complete, LAMP assay exhibited high sensitivity, as the detection limit was 0.01 pg/μL for all five Plasmodium species. It was demonstrated that all Plasmodium knowlesi (N= 90) and Plasmodium vivax (N= 56) were positively amplified by LAMP-LFD assay, whereas healthy donor samples (N= 8) were negative. However, not all mixed infections were positive, and other infected nonmalaria samples were negative. Loop-mediated isothermal amplification-LFD represents a robust approach with potential suitability for use in resource-constrained laboratories. We believe that LAMP-LFD has a potential to be developed as point-of-care diagnostic tool in future.
ncbi.nlm.nih.gov
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