The API 20E, the Enterotube, and routine methods of Cowan and Steel were used in parallel to identify 245 members of the Enterobacteriaceae. The API 20E and conventional methods gave the same identification in all but 2 (0-8%) of the 245 organisms tested. The Enterotube correctly identified 85% of these organisms on the first testing. On re-testing those organisms incorrectly identified the Ent...

A total of 371 (97%) of 382 strains of Enterobacteriaceae representing 26 species were identified cheaply, accurately, and rapidly by using a test system based upon standard 96-well microdilution plates and the API 20E profile data.

Beta-lactam-resistant Enterobacteriaceae represent an important public health problem; however, questions exist about their prevalence and the impact of recent breakpoint changes on clinical practice. We surveyed infectious disease physicians to better understand these issues. Many reported encountering resistant Enterobacteriaceae; respondents generally favored a more conservative interpretati...

Carbapenem susceptibility in Enterobacteriaceae (M9921, M9959) revealed the presence of MBLs bla(VIM-2) (M9959) and bla(IMP-8) (M9921), both as first cassettes of class-1-integrons. ESBL bla(PER-2) was detected in both strains and M9921 also harboured qnrB10, aac(6')-Ib and aac(6')-Ib-cr. This is the first report of MBLs in Enterobacteriaceae from Argentina.

We compared the susceptibility of 312 extended-spectrum beta-lactamase (ESBL)-producing Enterobacteriaceae isolates with that of 1,216 ESBL nonproducers. Of ESBL producers, 25% were susceptible to gentamicin, 30% to trimethoprim-sulfamethoxazole, 41% to ciprofloxacin, and 60% to piperacillin-tazobactam. ESBL nonproducers were more often susceptible to these agents. ESBL-producing Enterobacteria...

Outer membrane proteins of members of the family Enterobacteriaceae consist of conserved membrane-spanning segments and hypervariable, surface-exposed regions. We demonstrate that the hypervariable DNA segments corresponding to the surface-exposed regions of these proteins can be used to develop specific DNA probes for the identification of members of the family Enterobacteriaceae.

Several antimicrobial agents are being investigated as alternatives to carbapenems in the treatment of infections caused by ESBL-producing Enterobacteriaceae, which may be useful in avoiding overuse of carbapenems in the context of recent global spread of carbapenem-resistant Enterobacteriaceae. The most promising candidates for invasive infections so far are β-lactam/β-lactamase inhibitor comb...

BACKGROUND Close contact between pets and owners provides the opportunity for transmission of antimicrobial resistant organisms like extended-spectrum beta-lactamase (ESBL)/AmpC beta-lactamase (AmpC)-producing Enterobacteriaceae, posing a risk to public health. OBJECTIVES To investigate whether raw feed is a risk factor for household cats to shed ESBL-producing Enterobacteriaceae, a cohort st...

AIM To compare gut bacterial diversity and amount of Enterobacteriaceae in colonic mucosa between patients with and without diverticular disease (DD). METHODS Patients in a stable clinical condition with planned elective colonoscopy were included. Blood samples and colon mucosa biopsies were collected at the colonoscopy. Study questionnaires including questions about gastrointestinal symptoms...

Many pathogenic and commensal organisms are multidrug resistant due to exposure to various antibiotics. Often, this antimicrobial resistance is encoded by integrons that occur on plasmids or that are integrated into the bacterial chromosome. Integrons are commonly associated with bacterial genera in the family Enterobacteriaceae. We determined that class 1 integrases were present in approximate...