Publication: Sensitive detection of Plasmodium vivax malaria by the rotating-crystal magneto-optical method in Thailand
Issued Date
2021-12-01
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ISSN
20452322
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2-s2.0-85115379815
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Mahidol University
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SCOPUS
Bibliographic Citation
Scientific Reports. Vol.11, No.1 (2021)
Suggested Citation
Ágnes Orbán, Rhea J. Longley, Piyarat Sripoorote, Nongnuj Maneechai, Wang Nguitragool, Ádám Butykai, Ivo Mueller, Jetsumon Sattabongkot, Stephan Karl, István Kézsmárki Sensitive detection of Plasmodium vivax malaria by the rotating-crystal magneto-optical method in Thailand. Scientific Reports. Vol.11, No.1 (2021). doi:10.1038/s41598-021-97532-9 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/79214
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Title
Sensitive detection of Plasmodium vivax malaria by the rotating-crystal magneto-optical method in Thailand
Other Contributor(s)
Faculty of Tropical Medicine, Mahidol University
Papua New Guinea Institute of Medical Research
Budapest University of Technology and Economics
Walter and Eliza Hall Institute of Medical Research
University of Melbourne
James Cook University
Universität Augsburg
Mahidol University
Institut Pasteur, Paris
Papua New Guinea Institute of Medical Research
Budapest University of Technology and Economics
Walter and Eliza Hall Institute of Medical Research
University of Melbourne
James Cook University
Universität Augsburg
Mahidol University
Institut Pasteur, Paris
Abstract
The rotating-crystal magneto-optical detection (RMOD) method has been developed for the rapid and quantitative diagnosis of malaria and tested systematically on various malaria infection models. Very recently, an extended field trial in a high-transmission region of Papua New Guinea demonstrated its great potential for detecting malaria infections, in particular Plasmodium vivax. In the present small-scale field test, carried out in a low-transmission area of Thailand, RMOD confirmed malaria in all samples found to be infected with Plasmodium vivax by microscopy, our reference method. Moreover, the magneto-optical signal for this sample set was typically 1–3 orders of magnitude higher than the cut-off value of RMOD determined on uninfected samples. Based on the serial dilution of the original patient samples, we expect that the method can detect Plasmodium vivax malaria in blood samples with parasite densities as low as ∼ 5–10 parasites per microliter, a limit around the pyrogenic threshold of the infection. In addition, by investigating the correlation between the magnitude of the magneto-optical signal, the parasite density and the erythrocytic stage distribution, we estimate the relative hemozoin production rates of the ring and the trophozoite stages of in vivo Plasmodium vivax infections.