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Updated: Dec 26, 2025

A Multi-detection Assay for Malaria Transmitting Mosquitoes

A Multi-detection Assay for Malaria Transmitting Mosquitoes

Published on: February 28, 2015

Multiplex Human Malaria Array: Quantifying Antigens for Malaria Rapid Diagnostics.

Ihn Kyung Jang¹, Abby Tyler², Chris Lyman²

¹Diagnostics, PATH, Seattle, Washington.

The American Journal of Tropical Medicine and Hygiene

|March 20, 2020

Summary

This summary is machine-generated.

A new malaria antigen detection array improves diagnosis and screening. It quantifies key antigens, enhancing detection of Plasmodium falciparum, including deletion mutants, for next-generation rapid diagnostic tests (RDTs).

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Methods to Increase the Sensitivity of High Resolution Melting Single Nucleotide Polymorphism Genotyping in Malaria

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Published on: November 10, 2015

Area of Science:

* Medical Diagnostics
* Parasitology
* Biotechnology

Background:

* Rapid diagnostic tests (RDTs) are crucial for malaria diagnosis and prevalence estimation.
* Current RDTs face limitations in sensitivity and detecting certain parasite strains.
* Asymptomatic malaria screening requires more sensitive diagnostic tools.

Purpose of the Study:

* To develop and evaluate the Q-Plex™ Human Malaria Array for sensitive malaria antigen detection.
* To quantify Plasmodium falciparum-specific histidine-rich protein 2 (HRP2), P. falciparum-specific lactate dehydrogenase (PfLDH), Plasmodium vivax-specific LDH (PvLDH), Pan LDH, and C-reactive protein (CRP).
* To assess the array's utility for next-generation RDT development and asymptomatic malaria screening.

Main Methods:

* Development and validation of the Q-Plex™ Human Malaria Array.
* Quantification of key malaria antigens (HRP2, PfLDH, PvLDH, Pan LDH) and CRP.
* Performance evaluation against polymerase chain reaction (PCR)-confirmed malaria cases.

Main Results:

* At 99.5% specificity, diagnostic sensitivities were: HRP2 (92.7%), PfLDH (71.5%), PvLDH (46.1%), and Pan LDH (83.8%).
* Combining HRP2 and PfLDH improved detection of P. falciparum parasites with hrp2 and hrp3 deletions.
* The array successfully quantified target antigens in P. falciparum culture strains and Peruvian samples.

Conclusions:

* The Q-Plex™ Human Malaria Array offers enhanced sensitivity for malaria antigen detection.
* The array is valuable for developing next-generation RDTs and screening asymptomatic malaria.
* It aids in detecting P. falciparum hrp2/3 deletion mutants, addressing a critical diagnostic challenge.