Related Experiment Video
Updated: Nov 16, 2025
Methods to Increase the Sensitivity of High Resolution Melting Single Nucleotide Polymorphism Genotyping in Malaria
Published on: November 10, 2015
A powerful qPCR-high resolution melting assay with taqman probe in plasmodium species differentiation
Aline Lamien-Meda1, Hans-Peter Fuehrer2, David Leitsch3
1Institute for Specific Prophylaxis and Tropical Medicine, Medical University of Vienna, Vienna, Austria. Aline.LamienMeda@meduniwien.ac.at.
Background:
The use of highly sensitive molecular tools in malaria diagnosis is currently largely restricted to research and epidemiological settings, but will ultimately be essential during elimination and potentially eradication. Accurate diagnosis and differentiation down to species levels, including the two Plasmodium ovale species and zoonotic variants of the disease, will be important for the understanding of changing epidemiological patterns of the disease.
Methods:
A qPCR-high resolution melting (HRM) method was to detect and differentiate all human Plasmodium species with one forward and one reverse primer set. The HRM detection method was further refined using a hydrolysis probe to specifically discriminate Plasmodium falciparum.
Results:
Out of the 113 samples tested with the developed HRM-qPCR- P. falciparum probe assay, 96 (85.0 %) single infections, 12 (10.6 %) mixed infections, and 5 (4.4 %) were Plasmodium negative. The results were concordant with those of the nested PCR at 98.2 %. The assay limit of detection was varied from 21.47 to 46.43 copies /µl, equivalent to 1-2.11 parasites/µl. All P. falciparum infections were confirmed with the associated Taqman probe.
Conclusions:
Although the dependence on qPCR currently limits its deployment in resource-limited environments, this assay is highly sensitive and specific, easy to perform and convenient for Plasmodium mono-infection and may provide a novel tool for rapid and accurate malaria diagnosis also in epidemiological studies.
