Within the ESBL family the most common genes are temoneira (blaTEM) and sulfhydryl variable (blaSHV) with increasing reports of cefotaximase (blaCTX-M) [4]. The blaSHV and the blaTEM subgroups arise from mutational changes due to point mutations in the genes resulting in subtypes. Examples include blaSHV which differs from blaSHV-1 due to a single mutation of an amino acid from glycine to serin...

background: there is a growing concern on the impact of the presence of extended-spectrum β-lactamase (esbl) producing escherichia coli isolated from animals on public health. objectives: the aim of this study was to investigate the presence of three classes of esbl genes in e. coli isolates from sheep and broilers at a slaughter in urmia region, iran. methods: a total of 111 e. coli isolates w...

El presente reporte es la descripción original de blaTEM-176. Se caracterizaron los mecanismos resistencia a antimicrobianos un aislamiento Escherichia coli enterotoxigénica, determinándose 22 categorizados en 15 grupos diferentes mediante difusión agar, estableciéndose grupo filogenético, y presencia integrones Clase 1 2 PCR. Integrones genes β-lactámicos fueron secuenciados. del filogenético ...

AIM To determine the prevalence and genotypic characterisation of extended spectrum beta-lactamases produced by gram negative bacilli isolated at Mbarara Regional Referral Hospital (MRRH). SAMPLES Gram negative clinical isolates. STUDY DESIGN Laboratory-based descriptive cross-sectional study. PLACE AND DURATION OF THE STUDY MRRH, June and August 2012. METHODS Gram negative clinical iso...

In this brief communication we describe the occurrence of a KPC-producing Serratia marcescens isolate in a home-care patient from Recife, Brazil. The blaKPC, blaSPM, blaIMP, blaVIM, blaOXA, blaCTX-M, blaSHV, blaTEM and blaGES genes were investigated by Polymerase Chain Reaction (PCR) and DNA sequencing. The isolate was positive for blaKPC-2 and blaTEM-1 and was resistant to aztreonam, cefepime,...

Background and Objective: Beta-lactamases are the most important factors in the resistance to beta-lactam antibiotics among gram-negative bacteria, especially Klebsiella pneumoniae. Nowadays, the prevalence of infections caused by extended-spectrum β-lactamases (ESBLs)-producing K. pneumoniae is increasing, as one of the emerging health problems throughout the world. This study aimed to investi...