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Related Concept Videos

Malaria01:29

Malaria

Malaria pathogenesis in humans reflects a delicate interplay between parasite biology and host response. Clinical illness reflects a host’s immune response to the parasite’s asexual replication cycle, which is often asymptomatic in individuals with partial immunity. From the parasite's perspective, transmission between mosquito and human with minimal host pathology is evolutionarily advantageous. Among the six Plasmodium species infecting humans, P. falciparum and P. vivax dominate in global...

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Related Experiment Video

Updated: Jul 3, 2026

A Multi-detection Assay for Malaria Transmitting Mosquitoes
09:00

A Multi-detection Assay for Malaria Transmitting Mosquitoes

Published on: February 28, 2015

Multiple displacement amplification for malaria parasite DNA.

Y Wang1, S Nair, F Nosten

  • 1Southwest Foundation for Biomedical Research, San Antonio, Texas 78245, USA.

The Journal of Parasitology
|July 8, 2008
PubMed
Summary

Multiple displacement amplification (MDA) is effective for Plasmodium falciparum DNA. This whole genome amplification method accurately analyzes genetic markers, preserving valuable parasite DNA stocks for malaria research.

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Area of Science:

  • Genetics
  • Molecular Biology
  • Parasitology

Background:

  • Multiple displacement amplification (MDA) is a high-fidelity whole genome amplification technique.
  • Its application in the malaria parasite Plasmodium falciparum requires evaluation due to AT-rich DNA and potential human DNA contamination.

Purpose of the Study:

  • To assess the efficiency and fidelity of MDA for Plasmodium falciparum DNA.
  • To determine if MDA impacts the accurate genotyping of microsatellites and SNPs, and gene copy number analysis.

Main Methods:

  • Sixty Plasmodium falciparum DNA samples were amplified using phi29 polymerase-based MDA.
  • Genotyping of 14 microsatellites and 9 single-nucleotide polymorphisms (SNPs) was performed pre- and post-amplification.
  • Gene copy number for GTP-cyclohydrolase I was also assessed before and after MDA.

Main Results:

  • 100% concordance was observed for 829 microsatellite genotypes and 499 SNP genotypes.
  • Copy number estimates for the GTP-cyclohydrolase I gene showed a strong correlation (r² = 0.67) between pre- and post-amplification samples.
  • MDA proved effective in amplifying AT-rich Plasmodium falciparum DNA without significant loss of genetic information.

Conclusions:

  • MDA using phi29 is a reliable method for whole genome amplification of Plasmodium falciparum DNA.
  • This technique allows for accurate analysis of various genetic polymorphisms, including microsatellites, SNPs, and gene copy numbers.
  • MDA can extend the utility of limited Plasmodium falciparum DNA samples for genetic studies.