Fluoroquinolone use and chloroquine resistance development

Discussion in 'Canadian Pharmaceuticals Online' started by Evlampiy, 10-Mar-2020.

  1. cdeieiay New Member

    Fluoroquinolone use and chloroquine resistance development

    According to legend it was first brought to Europe by a Countess who had been treated with it in Peru in the 1600s. In 1820, two French chemists isolated quinine from the cinchona bark and quinine became a treatment of reference for intermittent fever throughout the world. Quinine remains an important and effective treatment for malaria today, despite sporadic observations of quinine resistance.

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    Because the use of broad-spectrum antibiotics encourages the spread of multidrug-resistant strains and the development of Clostridium difficile infections, treatment guidelines often recommend minimizing the use of fluoroquinolones and other broad-spectrum antibiotics in less severe infections and in those in which risk factors for multidrug resistance are not present. Fluoroquinolones also have been associated with the development of bacterial resistance and Clostridium difficile-associated diarrhea. The benefits of the fluoroquinolones e.g. broad spectrum of activity and high oral bioavailability and the risks of potential undesired side effects must be considered at the point of prescribing. For this analysis we included three different strains of P. falciparum in order to assess for cross-resistance to existing antimalarials. D6 is sensitive to the action of chloroquine and moderately resistant to mefloquine while Dd2 is resistant to multiple drugs including chloroquine, mefloquine, quinine, pyrimethamine and sulfadoxine.

    These compounds belonged to a new class of antimalarials, the four-amino quinolines. Research by German scientists to discover a substitute for quinine led to the synthesis in 1934 of Resochin (chloroquine) and Sontochin (3-methyl-chloroquine).

    Fluoroquinolone use and chloroquine resistance development

    Mechanisms of Resistance to Quinolones Clinical Infectious., AAP report details use of fluoroquinolones in children

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  7. Development of Chloroquine Resistance in Plasmodium falciparum. Drug resistance is the ability of a parasite to survive despite the presence of a drug that is meant to kill it in toxic levels. Resistance developed by most parasites that were initially sensitive to drugs mostly result from mutations in the genes responsive to the drug.

    • Chloroquine Resistance in Plasmodium falciparum - microbewiki.
    • Antimalarial Quinolones Synthesis, potency, and mechanistic..
    • Fluoroquinolone resistance Overuse of fluoroquinolones..

    Pleiotropic factors have an impact on the fluoroquinolone resistance epidemiology; as resistance rates vary significantly between and within countries, antibiotic prescribing must be viewed against this background of diverse processes contributing to the emergence and spread of antimicrobial drug resistance. The notion that fluoroquinolone therapy can be “targeted” for an indication requires challenge as fluoroquinolone therapy will always result in systemic drug levels. Evidence does not indicate that the use of two fluoroquinolones, such as ciprofloxacin and moxifloxacin, minimizes fluoroquinolone resistance. Thus, fluoroquinolone use is typically reserved for cases in which the benefits clearly outweigh the risks. The spectrum of activity, mechanisms of action and resistance, important resistance patterns, and adverse effects of commonly available fluoroquinolones ie, ciprofloxacin, levofloxacin, moxifloxacin, delafloxacin will be reviewed here.

  8. Giniro XenForo Moderator

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  9. Iron_Rat XenForo Moderator

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  10. NoteBookUA Well-Known Member

    Chloroquine Phosphate Rising Pharmaceuticals, Inc. FDA. Oct 08, 2018 Chloroquine is not active against the gametocytes and the exoerythrocytic forms including the hypnozoite stage P. vivax and P. ovale of the Plasmodium parasites. In vitro studies with Chloroquine demonstrated that it is active against the trophozoites of Entamoeba histolytica. Drug Resistance

    Chloroquine Oral Uses, Side Effects, Interactions, Pictures.