Mechanism of resistance to chloroquine

Discussion in 'Canada Drugs Online' started by MaxBarry, 17-Mar-2020.

  1. jake New Member

    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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    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. 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. High-grade drug resistance of P. vivax has been documented from the Island of Papua both Indonesian and Papua New Guinea and across the Indonesia archipelago, Thailand, Myanmar, Horn of Africa, and Brazil. 96,101 The mechanism of resistance and genetic basis of chloroquine resistance in P. vivax appears to be different from that underlying.

    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

    Chloroquine - FDA prescribing information, side effects and uses, Chloroquine - Wikipedia

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  6. Chloroquine is a 9-aminoquinoline known since 1934. Apart from its well-known antimalarial effects, the drug has interesting biochemical properties that might be applied against some viral infections. Chloroquine exerts direct antiviral effects, inhibiting pH-dependent steps of the replication of several viruses including members of the flaviviruses, retroviruses, and coronaviruses. Its best.

    • Effects of chloroquine on viral infections an old drug..
    • Chloroquine - an overview ScienceDirect Topics.
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    Nov 19, 2010 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. Chloroquine-resistant Plasmodium falciparum accumulate significantly less chloroquine than susceptible parasites, and this is thought to be the basis of their resistance. However, the reason for the lower accumulation of chloroquine was unknown. The resistant parasite has now been found to release chloroquine 40 to 50 times more rapidly than the susceptible parasite, although their initial. Learn about Chloroquine Mechanism of action and resistance in 2 minutes. Presenter Dr. Tanmay Mehta MD, DNB, PGDCTM

     
  7. shelestov Moderator

    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 Oral Route Description and. - Mayo Clinic HCQ - Clinical Hydroxychloroquine, Serum Online Services - Mayo Clinic
     
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