Effect of parenteral antibiotic administration on establishment of intestinal colonization in mice by Klebsiella pneumoniae strains producing extended-spectrum beta-lactamases.
A mouse model was used to test the hypothesis that antibiotics with activity against anaerobes promote overgrowth of extended-spectrum beta-lactamase-producing Klebsiella pneumoniae strains in stool. Subcutaneous clindamycin consistently promoted establishment of high-density colonization, whereas piperacillin-tazobactam, ceftriaxone, and ceftazidime promoted colonization only when a large inoculum and/or more resistant strain was administered.
Pediatric Infectious Diseases, Rainbow Babies and Childrens Hospital, Cleveland, Ohio 44106, USA.
Claudia K
CK
Hoyen
Nicole J
NJ
Pultz
David L
DL
Paterson
David C
DC
Aron
Curtis J
CJ
Donskey
D000818:Animals; D000900:Anti-Bacterial Agents / Q000008:administration & dosage / Q000627:therapeutic use*; D015169:Colony Count, Microbial; D024881:Drug Resistance, Bacterial; D005260:Female; D007279:Injections, Subcutaneous; D007422:Intestines / Q000382:microbiology*; D007710:Klebsiella Infections / Q000188:drug therapy* / Q000382:microbiology; D007711:Klebsiella pneumoniae / Q000187:drug effects* / Q000201:enzymology*; D051379:Mice; D001618:beta-Lactamases / Q000378:metabolism*
D000900:Anti-Bacterial Agents; D001618:beta-Lactamases