Prevalence of In Vitro Resistance to Eleven Standard or New Antimalarial Drugs among Plasmodium falciparum Isolates from Pointe-Noire, Republic of the Congo
| Autor: | Bruno Pradines, Thierry Fusai, Julien Cren, Philippe Cheval, Rémy Amalvict, Jean Pierre Gardair, P. Hovette, Christophe Rogier, Alain Callec, Joel Mosnier, Eric Baret, Henri Léonard Atanda |
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| Rok vydání: | 2006 |
| Předmět: |
Microbiology (medical)
Cycloguanil Adolescent medicine.medical_treatment Plasmodium falciparum Statistics as Topic Drug Resistance Dihydroartemisinin Amodiaquine Pharmacology Lumefantrine Antimalarials chemistry.chemical_compound Parasitic Sensitivity Tests Halofantrine parasitic diseases medicine Animals Humans Malaria Falciparum Artemisinin Child Mefloquine business.industry Infant Congo chemistry Child Preschool Parasitology business Atovaquone medicine.drug |
| Zdroj: | Journal of Clinical Microbiology. 44:2404-2408 |
| ISSN: | 1098-660X 0095-1137 |
| DOI: | 10.1128/jcm.00623-06 |
| Popis: | We determined the level of in vitro resistance of Plasmodium falciparum parasites to standard antimalarial drugs, such as chloroquine, quinine, amodiaquine, halofantrine, mefloquine, cycloguanil, and pyrimethamine, and to new compounds, such as dihydroartemisinin, doxycycline, atovaquone, and lumefantrine. The in vitro resistance to chloroquine reached 75.5%. Twenty-eight percent of the isolates were intermediate or had reduced susceptibility to quinine. Seventy-six percent and 96% of the tested isolates showed in vitro resistance or intermediate susceptibilities to cycloguanil and pyrimethamine, respectively. Only 2% of the parasites demonstrated in vitro resistance to monodesethylamodiaquine. No resistance was shown with halofantrine, lumefantrine, dihydroartemisinin, or atovaquone. Halofantrine, mefloquine, and lumefantrine demonstrated high correlation. No cross-resistance was identified between responses to monodesethyl-amodiaquine, dihydroartemisinin, atovaquone, and cycloguanil. Since the level of chloroquine resistance in vitro exceed an unacceptable upper limit, high rates of in vitro resistance to pyrimethamine and cycloguanil and diminution of the susceptibility to quinine, antimalarial drugs used in combination, such as amodiaquine, artemisinin derivatives, mefloquine, lumefantrine, or atovaquone, seem to be appropriate alternatives for the first line of treatment of acute, uncomplicated P. falciparum malaria. |
| Databáze: | OpenAIRE |
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