Development of a multiplexed assay for the detection of Leishmania donovani/Leishmania infantum protein biomarkers in the urine of patients with visceral leishmaniasis

by Abeijon C, Alves F, Monnerat S, Wasunna M, Mbui J, Viana AG, Bueno LL, Siqueira WF, Carvalho SG, Agrawal N, Fujiwara R, Sundar S, Campos-Neto A. Journal of Clinical Microbiology 2019, 57:e02076-18. doi: 10.1128/JCM.02076-18

Summary: The authors report the discovery and characterization of two new biomarkers of L. donovani present in the urine of Old World visceral leishmaniasis (VL) patients, Ld-mao1 and Ld-ppi1; capture ELISAs were developed to detect these two biomarkers with sensitivities of 44.4% and 28.8% respectively. A multiplexed assay designed to simultaneously detect these and three previously identified L. infantum protein biomarkers (Li-isd1, Li-txn1, and Li-ntf2) markedly increased the assay sensitivity to 82.2%. Leishmanial protein biomarkers found in urine of VL patients may be powerful tools for the development of a much-needed safe and accurate diagnostic test for this disease.

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