Mechanism of resistance to chloroquine

Discussion in 'Without A Doctor Prescription' started by wbbs, 11-Mar-2020.

  1. Fenik Moderator

    Mechanism of resistance to chloroquine


    Resistance to currently available antimalarial drugs has been confirmed in only two of the four human malaria parasite species, first developed independently in three to four areas in Southeast Asia, Oceania, and South America in the late 1950s and early 1960s. Since then, chloroquine resistance has spread to nearly all areas of the world where falciparum malaria is transmitted.

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    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. However, in the 1980s, widespread resistance developed in the parasite causing the most pathogenic form of malaria, Plasmodium falciparum. Understanding how resistance evolved took a long time and is initially based on knowledge of the mode of action of chloroquine. Mechanism of chloroquine action Recently, an altered chloroquine-transporter protein CG2 of the parasite has been related to chloroquine resistance, but other mechanisms of resistance also appear to be involved. Research on the mechanism of chloroquine and how the parasite has acquired chloroquine resistance is still ongoing, as other mechanisms of resistance are likely.

    Although resistance to these drugs tends to be much less widespread geographically, in some areas of the world, the impact of multi-drug resistant malaria can be extensive. Has also developed resistance to nearly all of the other currently available antimalarial drugs, such as sulfadoxine/pyrimethamine, mefloquine, halofantrine, and quinine.

    Mechanism of resistance to chloroquine

    Efflux of chloroquine from Plasmodium falciparum mechanism., Malaria understanding drug resistance - BugBitten

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  6. 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. P. vivax which also causes human malaria, appears to differ from P. falciparum in its mechanism of chloroquine resistance. Investigation of the.

    • Chloroquine-Resistant Malaria The Journal of Infectious..
    • Chloroquine - Wikipedia.
    • Chloroquine C18H26ClN3 - PubChem.

    ChloroquineResistance In Plasmodium Falciparum. With cholorquine there is emergence of resistance, which has limited its use. Primarily highly effective against febrile illness, relief is quickly achieved within 24 hours. It is easily available, well tolerated and cost effective but now uses are declining because of resistance. 1. The mechanisms of resistance for amino‐alcohols quinine, mefloquine and halofantrine are still unclear. Epidemiological studies have established that the frequency of chloroquine resistant mutants varies among isolated parasite populations, while resistance to antifolates is highly prevalent in most malarial endemic countries. The precise mechanism by which Chloroquine exhibits activity is not known. Chloroquine, may exert its effect against Plasmodium species by concentrating in the acid vesicles of the parasite and by inhibiting polymerization of heme. It can also inhibit certain enzymes by its interaction with DNA.

     
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    In some cases, they may not be available in every strength or form as the brand-name drug. Side Effects of Orencia Abatacept, Warnings, Uses Hydroxychloroquine Side Effects, Dosage, Uses, and More Common and Rare Side Effects for Diltiazem Oral
     
  9. Arterk User

    Medicines for the Prevention of Malaria While Traveling. Effects of chloroquine? Chloroquine is a relatively well-tolerated. medicine. The most common adverse reactions reported are stomach pain, nausea, vomiting, and headache. These side effects can often be lessened by taking chloroquine with food. Chloroquine may also cause itching in some people. All medicines may have some side effects.

    Chloroquine Phosphate Bulk Uses, Side Effects.