Susceptibilities to Carbapenems, and Presence of cphA Gene on Food-borne Aeromonas

BIBIANA MARIA MARTíN TALAVERA, FERNANDO OLIVIO BENASSI, MARTHA HELENA VON SPECHT, MARINA INéS QUIROGA, MYRIAN ALICIA GARCíA, AMANDA BEATRíZ PUCCIARELLI, EMILCE ZUBRESKI, MARGARíTA ESTHER LACZESKI AND GABRIEL GUTKIND

BRAZILIAN ARCHIVES OF BIOLOGY AND TECHNOLOGY

INST TECNOLOGIA PARANA

Año: 2006 vol. 49 p. 677 - 682

1516-8913

The purpose of this study was to determine the susceptibilities of food-borne Aeromonas to carbapenems, as well as to  investigate  the  presence  of  a  metallo  carbapenemase-encoding  gene,  named  cphA.  Minimum  Inhibitory Concentration (MIC) was determined following NCCLS standards. All the tested microorganisms were susceptible to  imipenem,  meropenem  and  biapenem.  However,  a  strong  inoculum  size  effect  on  carbapenem  MICs  was observed for most of the strains. Six strains, out of seven, showed the presence of metallo-â−lactamases but cphA gene was detected in only two strains of A. veroniibv. sobria.