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• W2808361010 endingPage "e0006457" @default.
• W2808361010 startingPage "e0006457" @default.
• W2808361010 abstract "Background Plasmodium knowlesi is the most common cause of malaria in Malaysian Borneo, with reporting limited to clinical cases presenting to health facilities and scarce data on the true extent of transmission. Serological estimations of transmission have been used with other malaria species to garner information about epidemiological patterns. However, there are a distinct lack of suitable serosurveillance tools for this neglected disease. Methodology/Principal findings Using in silico tools, we designed and expressed four novel P. knowlesi protein products to address the distinct lack of suitable serosurveillance tools: PkSERA3 antigens 1 and 2, PkSSP2/TRAP and PkTSERA2 antigen 1. Antibody prevalence to these antigens was determined by ELISA for three time-points post-treatment from a hospital-based clinical treatment trial in Sabah, East Malaysia (n = 97 individuals; 241 total samples for all time points). Higher responses were observed for the PkSERA3 antigen 2 (67%, 65/97) across all time-points (day 0: 36.9% 34/92; day 7: 63.8% 46/72; day 28: 58.4% 45/77) with significant differences between the clinical cases and controls (n = 55, mean plus 3 SD) (day 0 p<0.0001; day 7 p<0.0001; day 28 p<0.0001). Using boosted regression trees, we developed models to classify P. knowlesi exposure (cross-validated AUC 88.9%; IQR 86.1–91.3%) and identified the most predictive antibody responses. Conclusions/Significance The PkSERA3 antigen 2 had the highest relative variable importance in all models. Further validation of these antigens is underway to determine the specificity of these tools in the context of multi-species infections at the population level." @default.
• W2808361010 created "2018-06-21" @default.
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• W2808361010 date "2018-06-14" @default.
• W2808361010 modified "2023-10-16" @default.
• W2808361010 title "Identification and validation of a novel panel of Plasmodium knowlesi biomarkers of serological exposure" @default.
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• W2808361010 doi "https://doi.org/10.1371/journal.pntd.0006457" @default.
• W2808361010 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6001954" @default.
• W2808361010 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/29902183" @default.
• W2808361010 hasPublicationYear "2018" @default.
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