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. Plaquenil and other medications Plaquenil corneal verticillata Plaquenil and dry eyes Plasmodium falciparum chloroquine resistance CQR transporter point mutation PfCRT 76T is known to be the key determinant of CQR. Molecular detection of PfCRT 76T in field samples may be used for the surveillance of CQR in malaria-endemic countries. Mutations in the Plasmodium falciparum chloroquine resistance transporter, PfCRT, are the major determinant of chloroquine resistance in this lethal human malaria parasite. Here, we describe P. 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. 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 PfCRT and its role in antimalarial drug resistance., Mutations in the Plasmodium falciparum chloroquine. Plaquenil itching We evaluated 2 drug resistance markers, the P. falciparum chloroquine resistance transporter pfcrt gene and the artemisinin resistance gene Kelch 13 k13, in malaria parasites in Haiti to determine prevalences and provide information and recommendations for clinical practice to support malaria elimination efforts. No Plasmodium falciparum Chloroquine Resistance.. PfCRT and its role in antimalarial drug resistance. Chloroquine Resistance in Plasmodium falciparum Malaria.. 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. Chloroquine-resistant cells efflux chloroquine at 40 times the rate of chloroquine-sensitive cells; the related mutations trace back to transmembrane proteins of the digestive vacuole, including sets of critical mutations in the P. falciparum chloroquine resistance transporter PfCRT gene. Sep 30, 2015 Mutations in the Plasmodium falciparum chloroquine resistance transporter, PfCRT, are the major determinant of chloroquine resistance in this lethal human malaria parasite. Here, we describe P.