SYBR Green I and Taqman Quantitative Real-Time Polymerase Chain Reaction Methods for the Determination of Amplification of Plasmodium falciparum Multidrug Resistance-1 Gene (PFMDR1)
| Autor: | Wanna Chaijaroenkul, Poonuch Muhamad, Kanungnit Congpuong, Kesara Na-Bangchang |
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| Rok vydání: | 2011 |
| Předmět: |
Plasmodium falciparum
Gene Dosage Diamines Biology Sensitivity and Specificity Gene dosage law.invention chemistry.chemical_compound law parasitic diseases medicine TaqMan Humans Benzothiazoles Malaria Falciparum Organic Chemicals Ecology Evolution Behavior and Systematics Polymerase chain reaction Fluorescent Dyes Reverse Transcriptase Polymerase Chain Reaction Mefloquine DNA Protozoan biology.organism_classification Virology Molecular biology genomic DNA chemistry Artesunate Quinolines SYBR Green I Parasitology Multidrug Resistance-Associated Proteins medicine.drug |
| Zdroj: | Journal of Parasitology. 97:939-942 |
| ISSN: | 1937-2345 0022-3395 |
| DOI: | 10.1645/ge-2792.1 |
| Popis: | The pfmdr1 gene, which encodes P-glycoprotein homolog 1, has been shown to be a reliable marker of resistance for Plasmodium falciparum related to artesunate and mefloquine combination therapy. The aims of this study are to investigate the copy number of pfmdr1 in P. falciparum isolates collected from the 4 malaria-endemic areas of Thailand (Kanchanaburi, Mae Hongson, Ranong, and Tak) along the Thailand-Myanmar (Burma) border (Thai-Myanmar border) by using SYBR Green I and the standard method TaqMan real-time polymerase chain reaction (RT-PCR) and to compare the efficiency (sensitivity and specificity) of SYBR Green I with TaqMan RT-quantitative (q)PCR methods in determining pfmdr1 gene copy number. Ninety-six blood samples were collected onto filter paper from patients with uncomplicated falciparum malaria who attended malaria clinics in the Kanchanaburi (n = 45), Mae Hongson (n = 18), Ranong (n = 11), and Tak (n = 22) provinces in Thailand. Parasite genomic DNA was extracted from dried blood spots by using QIAcube™ automated sample preparation. Pfmdr1 gene copy number was determined by TaqMan (63 samples) and SYBR Green I (96 samples) real-time PCR. Seventy-one (74.0%), 14 (14.6%), 10 (10.4%), and 1 (1%) isolates carried 1, 2, 3, and 4 pfmdr1 gene copies, respectively. Forty-three of 48 (89.6%), 6 of 11 (54.5%), and 3 of 4 (75.0%) samples, respectively, showed agreement with results of 1, 2, and 3 pfmdr1 gene copies as determined by both methods. The efficiency of SYBR Green I in identifying pfmdr1 gene copy number was found to be significantly correlated with that of TaqMan. Considering its simplicity and relatively low cost, SYBR Green I RT-qPCR is therefore a promising alternative technique for the determination of pfmdr1 copy number. |
| Databáze: | OpenAIRE |
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