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whole blood

NOT Open Access | Ultraviolet/Visible and Near-Infrared Dual Spectroscopic Method for Detection and Quantification of Low-Level Malaria Parasitemia in Whole Blood

October 16, 2021 - 12:20 -- NOT Open Access
Author(s): 
Adegoke JA, De Paoli A, Afara IO, Kochan K, Creek DJ, Heraud P, Wood BR
Reference: 
Anal Chem. 2021 Oct 5;93(39):13302-13310

The scourge of malaria infection continues to strike hardest against pregnant women and children in Africa and South East Asia. For global elimination, testing methods that are ultrasensitive to low-level ring-staged parasitemia are urgently required. In this study, we used a novel approach for diagnosis of malaria infection by combining both electronic ultraviolet-visible (UV/vis) spectroscopy and near infrared (NIR) spectroscopy to detect and quantify low-level (1-0.000001%) ring-staged malaria-infected whole blood under physiological conditions uisng Multiclass classification using logistic regression, which showed that the best results were achieved using the extended wavelength range, providing an accuracy of 100% for most parasitemia classes.

NOT Open Access | Development of a Fast Chemiluminescent Magneto-Immunoassay for Sensitive Plasmodium falciparum Detection in Whole Blood

September 14, 2021 - 09:27 -- NOT Open Access
Author(s): 
Sánchez-Cano A, Ruiz-Vega G, Vicente-Gómez S, de la Serna E, Sulleiro E, Molina I, Sánchez-Montalvá A, Baldrich E
Reference: 
Anal Chem. 2021 Sep 9

The World Health Organization (WHO) estimates that over three billion people are at risk of acquiring malaria, a parasitic infection that produces more than 200 million new infections and nearly half a million deaths each year. Expanding the access to early diagnosis and treatment is one of the most effective ways to prevent disease complications, reduce patient mortality, and curb the community transmission.

Quantification of malaria antigens PfHRP2 and pLDH by quantitative suspension array technology in whole blood, dried blood spot and plasma

January 14, 2020 - 09:27 -- Open Access
Author(s): 
Xavier Martiáñez-Vendrell, Alfons Jiménez, Alfredo Mayor, et al.
Reference: 
Malaria Journal 2020 19:12, 9 January 2020

Malaria diagnostics by rapid diagnostic test (RDT) relies primarily on the qualitative detection of Plasmodium falciparum histidine-rich protein 2 (PfHRP2) and Plasmodium spp lactate dehydrogenase (pLDH). As novel RDTs with increased sensitivity are being developed and implemented as point of care diagnostics, highly sensitive laboratory-based assays are needed for evaluating RDT performance. Here, a quantitative suspension array technology (qSAT) was developed, validated and applied for the simultaneous detection of PfHRP2 and pLDH in a variety of biological samples (whole blood, plasma and dried blood spots) from individuals living in different endemic countries.

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