Pfcrt chloroquine resistance

Discussion in 'Health Canada Drug Database' started by 1cska, 07-Mar-2020.

  1. zxdinc Moderator

    Pfcrt chloroquine resistance


    Chloroquine has been extensively used in mass drug administrations, which may have contributed to the emergence and spread of resistance. It is recommended to check if chloroquine is still effective in the region prior to using it.

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    Feb 11, 2020 And that’s what is so exciting about the image above. It presents the unprecedented, 3D atomic-resolution structure of a protein made by P. falciparum that’s been a major source of its resistance the chloroquine-resistance transporter protein, or PfCRT. In this cropped density map, you see part of the protein’s biochemical structure. Hispaniola is the only Caribbean island to which Plasmodium falciparum malaria remains endemic. Resistance to the antimalarial drug chloroquine has rarely been reported in Haiti, which is located on Hispaniola, but the K76T pfcrt P. falciparum chloroquine resistance transporter gene mutation that confers chloroquine resistance has been detected intermittently. Chloroquine CQ was the cornerstone of anti-malarial treatment in Africa for almost 50 years, but has been widely withdrawn due to the emergence and spread of resistance. Recent reports have suggested that CQ-susceptibility may return following the cessation of CQ usage. Here, we monitor CQ sensitivity and determine the prevalence of genetic polymorphisms in the CQ resistance transporter gene.

    The Centers for Disease Control and Prevention recommend against treatment of malaria with chloroquine alone due to more effective combinations. In areas where resistance is present, other antimalarials, such as mefloquine or atovaquone, may be used instead.

    Pfcrt chloroquine resistance

    Molecular map of chloroquine resistance in Mali., Plasmodium falciparum K76T pfcrt Gene Mutations and.

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  4. The emergence and spread of chloroquine-resistant Plasmodium falciparum malaria parasites has been a disaster for world health. Resistance is conferred by mutations in the Chloroquine Resistance Transporter PfCRT, an integral membrane protein localized to the parasite’s internal digestive vacuole.

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    Genotyping of the chloroquine-resistance biomarker pfcrt Plasmodium falciparum chloroquine resistance trans-porter gene suggests that, in the absence of chloroquine pressure, Plasmodium falciparum parasites in Malawi have reverted to chloroquine sensitivity. However, malaria infec-tions in Africa are commonly polyclonal, and standard PCRs Plasmodium falciparum resistance to chloroquine, the former gold standard antimalarial drug, is mediated primarily by mutant forms of the chloroquine resistance transporter PfCRT. These mutations impart upon PfCRT the ability to efflux chloroquine from the intracellular digestive vacuole, the site of drug action. Plasmodium falciparum resistance to chloroquine, the former gold standard antimalarial drug, is mediated primarily by mutant forms of the ‘Chloroquine Resistance Transporter’ PfCRT. These mutations impart upon PfCRT the ability to efflux chloroquine from the intracellular digestive vacuole, the site of drug action.

     
  5. ANDREZ Well-Known Member

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  6. noxbuz New Member

    Plaquenil hydroxychloroquine sulfate dose, indications. Hydroxychloroquine can lower the seizure threshold; therefore, the activity of antiepileptic drugs may be impaired with concomitant use. Metoprolol Moderate Monitor for increased metoprolol adverse reactions including bradycardia and hypotension during coadministration. A dosage reduction for metoprolol may be needed based on response.

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  7. Sayros New Member

    R-chloroquine C18H26ClN3 ChemSpider Structure, properties, spectra, suppliers and links for R-chloroquine, 58175-87-4. Jump to main content Jump to site nav. Compounds with the same molecular.

    Chloroquine -