Blaoxa Type Genes
Mostrando 1-8 de 8 artigos, teses e dissertações.
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1. Clinical and microbiological characteristics of OXA-23- and OXA-143-producing Acinetobacter baumannii in ICU patients at a teaching hospital, Brazil
ABSTRACT Background: Carbapenem-resistant Acinetobacter baumannii (CRAb) is an important cause of nosocomial infections especially in intensive care units. This study aimed to assess clinical aspects and the genetic background of CRAb among ICU patients at a Brazilian teaching hospital. Methods: 56 critically ill patients colonized or infected by CRAb, dur
Braz J Infect Dis. Publicado em: 2016-12
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2. Caracterização de cepas de Acinetobacter baumannii durante um surto de infecção hospitalar
Foram isoladas 19 cepas monoclonais de 8 pacientes da unidade de terapia intensiva, resistentes aos carbapenêmicos. Todas as cepas apresentaram o gene blaOXA-51-like e por análise do perfil de proteínas de membrana notou-se ausência da fração de 22 kDa, sugerindo a combinação de dois mecanismos de resistência aos carbapenêmicos.
Brazilian Journal of Microbiology. Publicado em: 2009-06
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3. Prevalência de beta-lactamases de amplo espectro e metilases RNAr 16S em isolados clínicos de Pseudomonas aeruginosa multirresistentes recuperados em diferentes hospitais de São Paulo / Prevalence of Extended-spectrum beta-lactamase and 16S rRNA methylases in clinical isolates of multidrug-resistant Pseudomonas aeruginosa recovered from differents hospitals in São Paulo
Introduction and aim: The production of extended-spectrum beta-lactamases (ESBLs) has been restricted to Klebsiella spp. and Escherichia coli, being associated with high rates of resistance, morbidity and mortality. Since genetic determinants for ESBLs (blaESBL genes) are mediated by plasmids, the spread to other medical important species is considered an ep
Publicado em: 2009
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4. Characterization of Clinical Isolates of Klebsiella pneumoniae from 19 Laboratories Using the National Committee for Clinical Laboratory Standards Extended-Spectrum β-Lactamase Detection Methods
Extended-spectrum β-lactamases (ESBLs) are enzymes found in gram-negative bacilli that mediate resistance to extended-spectrum cephalosporins and aztreonam. In 1999, the National Committee for Clinical Laboratory Standards (NCCLS) published methods for screening and confirming the presence of ESBLs in Klebsiella pneumoniae, Klebsiella oxytoca, and Escherich
American Society for Microbiology.
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5. Evolution of Multiresistance in Nontyphoid Salmonella Serovars from 1984 to 1998 in Argentina
Molecular evolution of multiresistance in nontyphoid Salmonella spp. was investigated with 155 isolates obtained in Argentina from 1984 to 1998. In 74 isolates obtained from 1984 to 1988 resistance was associated with the presence of Tn3, Tn9, class I (In0) and II (Tn7) integrons, and the aac(3)-IIa gene. Extended-spectrum cephalosporin (ESC) resistance in S
American Society for Microbiology.
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6. Multidrug-Resistant Salmonella enterica Serovar Muenchen from Pigs and Humans and Potential Interserovar Transfer of Antimicrobial Resistance
Salmonella serovars are important reservoirs of antimicrobial resistance. Recently, we reported on multidrug-resistant (MDR) Salmonella enterica serovar Typhimurium strains among pigs with resistance to ampicillin, kanamycin, streptomycin, sulfamethoxazole, and tetracycline (resistance [R] type AKSSuT) and resistance to amoxicillin-clavulanic acid, ampicilli
American Society for Microbiology.
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7. The Aminoglycoside 6′-N-Acetyltransferase Type Ib Encoded by Tn1331 Is Evenly Distributed within the Cell's Cytoplasm
The multiresistance transposon Tn1331, which mediates resistance to several aminoglycosides and β-lactams, includes the aac(6′)-Ib, aadA1, blaOXA-9, and blaTEM-1 genes. The nucleotide sequence of aac(6′)-Ib includes a region identical to that of the blaTEM-1 gene. This region encompasses the promoter and the initiation codon followed by 15 nucleotides.
American Society for Microbiology.
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8. Molecular Epidemiology of Sequential Outbreaks of Acinetobacter baumannii in an Intensive Care Unit Shows the Emergence of Carbapenem Resistance
The molecular epidemiology of multidrug-resistant Acinetobacter baumannii was investigated in the medical-surgical intensive care unit (ICU) of a university hospital in Italy during two window periods in which two sequential A. baumannii epidemics occurred. Genotype analysis by pulsed-field gel electrophoresis (PFGE) of A. baumannii isolates from 131 patient
American Society for Microbiology.