Mechanism of resistance to chloroquine

Discussion in 'Canada Drugs Online' started by egorrr, 19-Mar-2020.

  1. eXtravert XenForo 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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    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. 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. The mechanisms of chloroquine accumulation in the food vacuole have been proposed to be accumulation of chloroquine in the food vacuole as a result of increased acidity, presence of a carrier in the parasite and the presence of a receptor in the vacuole that chloroquine can bind to 10.

    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 mechanism of drug action and resistance. - NCBI, Effects of chloroquine on viral infections an old drug.

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  5. Learn about Chloroquine Mechanism of action and resistance in 2 minutes. Presenter Dr. Tanmay Mehta MD, DNB, PGDCTM

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    Efflux of chloroquine from Plasmodium falciparum mechanism of chloroquine resistance Science Chloroquine-resistant Plasmodium falciparum accumulate significantly less chloroquine than. 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 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. Usedcar XenForo Moderator

    General recommendations for other vaccines to consider during the pretravel consultation can be found on the CDC Travelers’ Health website (gov/travel). Update Chloroquine-Resistant Plasmodium falciparum -- Africa WHO Antimalarial drug efficacy maps Malaria Prophylaxis – Malaria Site
  7. ph-b New Member

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