2017
DOI: 10.14409/favecv.v15i1/2.6579
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Actividad antibacteriana in vitro de Ciprofloxacina sobre una cepa autóctona de Escherichia coli: efecto del pH sobre su potencia y efecto de la persistencia bacteriana sobre su modo de acción

Abstract: RESUMEN. En este trabajo se evaluó in vitro:(i) el efecto del pH sobre la actividad bactericida de ciprofloxacina (CFX) frente a una cepa autóctona de Escherichia coli y (ii) el efecto de las bacterias persistentes sobre el modo de acción concentración dependiente de CFX. La actividad antibacteriana de CFX disminuyó a causa del descenso del pH, por lo que los valores de concentración inhibitoria mínima (CIM), concentración bactericida mínima (CBM) y concentración de erradicación bacteriana mínima (CEBM) se inc… Show more

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“…As shown in Figure 9 a and Figure 10 a, the antimicrobial activity of Cpx is dependent on the concentration, being slightly higher at pH 7.4. These results are in agreement with those previously reported for FQ since the antibacterial action of Cpx decreased with reductions of pH from 7.4 to 5.5 [ 46 ]. At both pH values the lowest concentration evaluated (4 μg/mL) did not affect the cell viability of the CRL 1098 strain (data not shown).…”
Section: Resultssupporting
confidence: 93%
“…As shown in Figure 9 a and Figure 10 a, the antimicrobial activity of Cpx is dependent on the concentration, being slightly higher at pH 7.4. These results are in agreement with those previously reported for FQ since the antibacterial action of Cpx decreased with reductions of pH from 7.4 to 5.5 [ 46 ]. At both pH values the lowest concentration evaluated (4 μg/mL) did not affect the cell viability of the CRL 1098 strain (data not shown).…”
Section: Resultssupporting
confidence: 93%