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Rev. gastroenterol. Perú ; 31(3): 224-229, jul.-set. 2011. ilus, tab
Article in Spanish | LILACS, LIPECS | ID: lil-692389

ABSTRACT

OBJETIVOS: Determinar la concentración mínima inhibitoria (CMI) de Levofloxacino en cepas de HELICOBACTER PYLORI (HP). MATERIALES Y MÉTODOS: Se evaluaron 95 cepas peruanas de HP en métodos de agar dilución y difusión en disco, así como el coeficiente Pearson (r) y el efecto del inóculo. RESULTADOS: 36,9% (35 de 95) fueron resistentes a Levofloxacino (CMI>1μg/ml). CMI90 fue 16ug/ml (IC:90%). CMI de Levofloxacino no viró ante diferentes concentraciones del inóculo. r:-0,733 (p<0,001). CONCLUSIONES: La proporción de HP resistentes a Levofloxacino en Perú es mayor a la observada en países desarrollados. Se recomienda evaluar periódicamente la susceptibilidad antimicrobiana para elegir óptimas conductas terapéuticas.


OBJECTIVES: To determine the Minimum inhibitory concentration (MIC) of Levofloxacin against HELICOBACTER PYLORI (HP). MATERIALS AND METHODS: 95 HP Peruvian strains were evaluated in Agar dilution and Disk diffusion tests, as well as the Pearson Coefficient (r) and the inoculum’s effect. RESULTS: 36.9% (35 of 95) were resistant (MIC>1μg/ml) to Levofloxacin. MIC90 was 16ug/ ml (CI:90%). MIC of Levofloxacin did not change at different inoculum concentrations. r: -0.733 (p<0.001). CONCLUSIONS: The proportion of HP Levofloxacin resistant strains in Peru is higher than in developed countries. Periodic testing of antibiotic susceptibility is warranted to select the most accurate therapies.


Subject(s)
Anti-Bacterial Agents/pharmacology , Disk Diffusion Antimicrobial Tests/methods , Drug Resistance, Bacterial , Helicobacter pylori/drug effects , Ofloxacin/pharmacology , Agar , Egg Yolk , Microbial Sensitivity Tests , Peru
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