Parasitology Research

, Volume 109, Issue 2, pp 291–296

Detecting mutations in PfCRT and PfMDR1 genes among Plasmodium falciparum isolates from Saudi Arabia by pyrosequencing

  • Saad M. Bin Dajem
  • Adel Ali H. Al-Sheikh
  • Marie Fe Bohol
  • Mohammad Alhawi
  • Mohammed N. Al-Ahdal
  • Ahmed Al-Qahtani
Original Paper

DOI: 10.1007/s00436-011-2251-5

Cite this article as:
Bin Dajem, S.M., Al-Sheikh, A.A.H., Bohol, M.F. et al. Parasitol Res (2011) 109: 291. doi:10.1007/s00436-011-2251-5

Abstract

The emergence of chloroquine resistance in Plasmodium falciparum is a significant public health problem where malaria is endemic. We aimed to evaluate the efficacy of pyrosequencing to assess chloroquine resistance among P. falciparum isolates from the southwestern region of Saudi Arabia by analyzing the K76T and N86Y mutations in the P. falciparum chloroquine resistance transporter (PfCRT) and P. falciparum multidrug resistance 1 (PfMDR1) genes, respectively. Blood samples (n = 121) from microscopically positive P. falciparum cases were collected. DNA was extracted, and fragments from each of the genes were amplified by PCR using new sets of primers. The amplicons were sequenced using a pyrosequencer. All of the 121 samples were amplified for assessment of the PfCRT K76T and PfMDR1 N86Y mutations. All of the samples amplified for the PfCRT 76T mutation harbored the ACA codon (121/121; 100%), indicating the presence of the 76T mutation. For the PfMDR1 N86Y mutation, 72/121 samples (59.5%) had the sequence AAT at that position, indicating the presence of the wild-type allele (86N). However, 49/121 samples (40.5%) had a TAT codon, indicating the mutant allele (Y) at position 86. This study shows that pyrosequencing could be useful as a high throughput, rapid, and sensitive assay for the detection of specific single nucleotide polymorphisms in drug-resistant P. falciparum strains. This will help health authorities in malaria-endemic regions to adopt new malaria control strategies that will be applicable for diagnostic and drug resistance assays for malaria and other life-threatening pathogens that are endemic in their respective countries.

Copyright information

© Springer-Verlag 2011

Authors and Affiliations

  • Saad M. Bin Dajem
    • 1
  • Adel Ali H. Al-Sheikh
    • 2
  • Marie Fe Bohol
    • 3
  • Mohammad Alhawi
    • 4
  • Mohammed N. Al-Ahdal
    • 3
  • Ahmed Al-Qahtani
    • 3
    • 5
  1. 1.Biology Department, College of ScienceKing Khalid UniversityAbhaSaudi Arabia
  2. 2.National Center for Training and Research, Ministry of HealthJazanSaudi Arabia
  3. 3.Department of Biological and Medical ResearchKing Faisal Specialist Hospital and Research CenterRiyadhSaudi Arabia
  4. 4.College of Health SciencesKing Abdulaziz UniversityJeddahSaudi Arabia
  5. 5.Liver Disease Research Center (LDRC), College of MedicineKing Saud UniversityRiyadhSaudi Arabia

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