scholarly journals Rapid Selection of Plasmodium falciparum Chloroquine Resistance Transporter Gene and Multidrug Resistance Gene-1 Haplotypes Associated with Past Chloroquine and Present Artemether-Lumefantrine Use in Inhambane District, Southern Mozambique

2013 ◽  
Vol 88 (3) ◽  
pp. 536-541 ◽  
Author(s):  
Thomas T. Thomsen ◽  
Ib C. Bygbjerg ◽  
Michael Alifrangis ◽  
Elsa V. E. Tomás ◽  
Derek Charlwood ◽  
...  
Parasitology ◽  
1993 ◽  
Vol 106 (2) ◽  
pp. 107-115 ◽  
Author(s):  
R. M. Ekong ◽  
K. J. H. Robson ◽  
D. A. Baker ◽  
D. C. Warhurst

SUMMARYHomologues of the mammalian multidrug resistance gene have been identified in isolates and clones of Plasmodium falciparum and designated pfmdr1 and pfmdr2. Mutations in pfmdr1 have been associated with chloroquine resistance but confirmation could not be obtained in a genetic cross. We have examined the copy number and expression of pfmdr1 and pfmdr2 in chloroquine-sensitive and -resistant P. falciparum and have found no relationship between the copy number of either gene and chloroquine resistance. However, a marked correlation was seen between levels of mRNA transcribed for each gene and chloroquine resistance. Two transcripts of pfmdr1 were detected, and in the asexual blood cycle an 8 kb transcript appeared first, followed by the appearance of a 7 kb species.


Nature ◽  
1990 ◽  
Vol 345 (6272) ◽  
pp. 255-258 ◽  
Author(s):  
S. J. Foote ◽  
D. E. Kyle ◽  
R. K. Martin ◽  
A. M. J. Oduola ◽  
K. Forsyth ◽  
...  

2020 ◽  
Vol 44 (1) ◽  
Author(s):  
Iyabo Adepeju Simon-Oke ◽  
Adeola Olanireti Ade-Alao ◽  
Foluso Ologundudu

Abstract Background The study evaluated the prevalence of malaria and Plasmodium falciparum chloroquine resistance transporter gene (PfCRT) in HIV patients attending Specialist Hospital, Akure. This study was carried out between April and June 2019. Three hundred and seventeen (317) patients attending the antiretroviral clinic (ART) were involved, out of which 89 (28.08%) were males and 228 (71.92%) were females. HIV test was done using the Unigold® HIV test kit, malaria test was done using thick and thin blood smear, CD4 test was done using the Partec® CD4 counter and PCR was used to detect the presence of plasmodium falciparum mutant gene. The data obtained from this analysis was subjected to Pearson’s Chi-square test. Results The overall result showed low prevalence of malaria (23.03%) in the sampled patients. Highest malaria prevalence (31.0%) was recorded in HIV patients with CD4 count between 200–500 cells/μl of blood, with the males recording 24.7% malaria prevalence. The age group 20–29 years recorded the highest prevalence of 27.3%. A higher prevalence 91.1% of PfCRT gene in HIV-positive and (40.0%) in HIV-negative patients was recorded with 100% prevalence in patients with CD4 count ≤ 200. This shows that the low prevalence of malaria recorded in this study could be credited to good health-seeking attitude of HIV patients and the upscale of HIV care and treatment centres. Conclusion The high prevalence of PfCRT gene shows that treatment of malaria with chloroquine is still being practised despite the availability of artemisinin-based combination therapy (ACTs) as the recommended regimen for malaria treatment.


2013 ◽  
Vol 12 (1) ◽  
pp. 426 ◽  
Author(s):  
Maha A ElBadry ◽  
Alexandre Existe ◽  
Yves S Victor ◽  
Gladys Memnon ◽  
Mark Fukuda ◽  
...  

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