History of chloroquine resistance

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  1. Writer-art Moderator

    History of chloroquine resistance


    Rapid diagnostic assays for Pf CRT mutations are already employed as surveillance tools for drug resistance. Here, we review recent field studies that support the central role of Pf CRT mutations in chloroquine resistance.

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    Resistance to chloroquine of malaria strains is known to be associated with a parasite protein named PfCRT, the mutated form of which is able to reduce chloroquine accumulation in the digestive vacuole of the pathogen. Whether the protein mediates extrusion. As mentioned in the history section of this website, the first confirmed cases of chloroquine resistance CQR were documented in two Americans who return ed from Colombia in 1961 with resistant strains of P. falciparum. Resistance began to appear in Papua New Guinea in the 1960s and Africa in the 1970s 1. Chloroquine Research by German scientists to discover a substitute for quinine led to the synthesis in 1934 of Resochin chloroquine and Sontochin 3-methyl-chloroquine. These compounds belonged to a new class of antimalarials, the four-amino quinolines.

    Recognition of the value of chloroquine was delayed, and it was not brought forward until it was reevaluated in the United States and designated the drug of choice against malaria near the end of World War II [3]. These studies suggest chloroquine resistance arose in ⩾4 distinct geographic foci and substantiate an important role of immunity in the outcomes of resistant infections after chloroquine treatment. Investigation of the resistance mechanisms and of the role of immunity in therapeutic outcomes will support new approaches to drugs that can take the place of chloroquine or augment its efficiency Early in the 20th century, intense demands for an effective quinine substitute launched the discovery and evaluation of a series of organic compounds (beginning with methylene blue), which led to pamaquine and quinacrine after World War I and ultimately produced chloroquine in 1934 [1, 2].

    History of chloroquine resistance

    History and importance of antimalarial drug resistance - D., Untitled Document web.stanford.edu

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  5. Red Pages Malaria Information and Prophylaxis, by Country. Links with this icon indicate that you are leaving the CDC website. The Centers for Disease Control and Prevention CDC cannot attest to the accuracy of a non-federal website.

    • CDC - Malaria - Travelers - Malaria Information and Prophylaxis, by Country.
    • History of antimalarials Medicines for Malaria Venture.
    • Chloroquine Resistance in Plasmodium falciparum - microbewiki.

    Localized permanent epidemics the genesis of chloroquine resistance in Plasmodium falciparum. Verdrager J. Localized permanent epidemics occur when, for an indefinite period of time, there is a temporary but continuous introduction of unprotected non-immunes into the same locality of a hyperendemic area. Chloroquine is an antimalarial drug. Doctors can usually cure people who are infected with the malaria parasite with various drugs, including this one, but sometimes the parasite is immune to a certain drug. In the case of chloroquine resistance, the parasite appears to have evolved in a way that prevents the drug from getting into the parasite. Chloroquine is a 4-aminoquinoline with antimalarial, anti-inflammatory, and potential chemosensitization and radiosensitization activities. Although the mechanism is not well understood, chloroquine is shown to inhibit the parasitic enzyme heme polymerase that converts the toxic heme into non-toxic hemazoin, thereby resulting in the accumulation of toxic heme within the parasite.

     
  6. vdrevflee Guest

    Hydroxychloroquine is a quinoline medicine used to treat or prevent malaria, a disease caused by parasites that enter the body through the bite of a mosquito. Hydroxychloroquine Use During Pregnancy Side Effects of Plaquenil Hydroxychloroquine, Warnings, Uses PATIENT FACT SHEET Hydroxychloroquine Plaquenil
     
  7. Praktik Well-Known Member

    Hydroxychloroquine is a quinoline medicine used to treat or prevent malaria, a disease caused by parasites that enter the body through the bite of a mosquito. Hydroxychloroquine Side Effects, Dosage, Uses, and More Will you have Weight increased with Hydroxychloroquine sulfate - eHealthMe Hydroxychloroquine Indications, Side Effects, Warnings.
     
  8. Pantion User

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  9. Fiericle New Member

    The Risk of Retinal Toxicity with Plaquenil Aug 29, 2014 Plaquenil, hydroxychloroquine HCQ, is an anti-malarial medication that has been proven to be useful in the treatment of patients with rheumatoid arthritis RA, systemic lupus erythematosus SLE and other inflammatory and autoimmune diseases. In Sjögren’s, Plaquenil is used to treat many symptoms.

    What is Plaquenil? - GoodRx