Beta Lactam Resistance
Mostrando 1-12 de 307 artigos, teses e dissertações.
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1. Detection of multidrug-resistant Pseudomonas aeruginosa harboring bla GES-1 and bla GES-11 in Recife, Brazil
Abstract INTRODUCTION: Pseudomonas aeruginosa, an important pathogen globally, presents several resistance mechanisms. This study aimed to investigate the presence of bla GES in clinical isolates of Pseudomonas aeruginosa obtained from various clinical specimens from patients admitted to three different hospitals in Recife, Brazil. The Guiana extended spect
Rev. Soc. Bras. Med. Trop.. Publicado em: 2017-12
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2. Ceftolozane-tazobactam activity against drug-resistant Enterobacteriaceae and Pseudomonas aeruginosa causing healthcare-associated infections in Latin America: report from an antimicrobial surveillance program (2013-2015)
ABSTRACT This study evaluated the in vitro activity of ceftolozane-tazobactam and comparator agents tested against Latin American isolates of Enterobacteriaceae and Pseudomonas aeruginosa from patients with health care-associated infections. Ceftolozane-tazobactam is an antipseudomonal cephalosporin combined with a well-established β-lactamase inhibitor.A t
Braz J Infect Dis. Publicado em: 2017-12
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3. Detection of cfxA2, cfxA3, and cfxA6 genes in beta-lactamase producing oral anaerobes
ABSTRACT Purpose The aim of this study was to identify β-lactamase-producing oral anaerobic bacteria and screen them for the presence of cfxA and BlaTEM genes that are responsible for β-lactamase production and resistance to β-lactam antibiotics. Material and Methods Periodontal pocket debris samples were collected from 48 patients with chronic period
J. Appl. Oral Sci.. Publicado em: 2016-04
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4. Occurrence and sensitivity profile of extended spectrum beta-lactamase-producing Enterobacteriaceae at a tertiary hospital in Southern Brazil
Abstract: INTRODUCTION: Nosocomial infections are closely associated with antimicrobial drug resistance. One of the most important mechanisms of resistance to β-lactam antibiotics is the production of extended spectrum β-lactamases (ESBLs). The objective of the present study was to evaluate the prevalence and antimicrobial susceptibility profile of ESBL-p
Rev. Soc. Bras. Med. Trop.. Publicado em: 2015-12
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5. Detection of multi drug resistant bacteria in major hospitals in Kano, North-West, Nigeria
Two major hospitals in Kano, North West Nigeria have recorded increasing resistance of clinical pathogens to broad spectrum β lactams, mediated by extended spectrum β- lactamase (ESβL) and non ESBLs. A study was therefore undertaken to determine the occurrence and prevalence of plasmid and chromosomal mediated AmpC βL and carbapenemase in addition to alr
Braz. J. Microbiol.. Publicado em: 2014-09
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6. Native valve endocarditis and femoral embolism due to Granulicatella adiacens: a rare case report
The fastidious Gram-positive cocci Granulicatella adiacens, previously known as nutritionally variant streptococci (NVS) are unusual but significant cause of endocarditis due to increased mortality and morbidity. Difficulties in reaching correct bacteriological identification, increased resistance to beta-lactam antibiotics and macrolides and complicated cli
Brazilian Journal of Infectious Diseases. Publicado em: 2010-12
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7. Identification, antimicrobial resistance and genotypic characterization of enterococcus spp. isolated in Porto Alegre, Brazil
In the past two decades the members of the genus Enterococcus have emerged as important nosocomial pathogens worldwide. In the present study, we evaluated the antimicrobial resistance and genotypic characteristics of 203 Enterococcus spp. recovered from different clinical sources from two hospitals in Porto Alegre, Rio Grande do Sul, Brazil. The species were
Publicado em: 2010
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8. Pesquisa de genes de resistência a antimicrobianos beta-lactâmicos e de enterotoxina em cepas de Staphylococcus aureus presentes em amostras de alimentos / Search of antimicrobial beta-lactam resistance genes and enterotoxin genes in Staphylococcus aureus strains present in food samples
Introduction: Staphylococcus aureus are a bacterium that causes various types of diseases. There are two major aggravating to its presence: the toxins production and antimicrobial resistance. S. aureus produce heat-labile enterotoxina that, when present in food, can lead to poisoning of those who consume. This specie is also known to easily respond adaptivel
Publicado em: 2010
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9. Estudo comparativo de fatores de virulência em isolados clínicos de Pseudomonas aeruginosa produtores e não produtores de metalo- ß-lactamase SPM-1
The invasion abilities, colonization and tissue damage presented by P. aeruginosa are due to the multiples virulence factors produced by the microorganism during the pathogenesis. Clinical isolates of SPM-1 metallo-β-lactamase Pseudomonas aeruginosa (SPM-1 MβL) from nosocomial infections present high rates morbidity and mortality and represent epid
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/05/2009
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10. Epidemiologia molecular de Escherichia coli e Klebsiella spp produtoras de beta-lactamase de espectro ampliado
The extended-spectrum beta-lactamases (ESBL) represent an important mechanism of resistance to beta-lactam antibiotics. Such enzymes have spread among members of the Enterobacteriaceae family, which are responsible for infections related to health care, particularly nosocomial infections. Objectives: (a) To determine the prevalence of ESBL producing Escheric
Publicado em: 2009
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11. In vitro activity of fluoroquinolones (gatifloxacin, levofloxacin and trovafloxacin) and seven other antibiotics against Streptococcus pneumoniae
In recent years, the level of resistance of S. pneumoniae to beta-lactam and/or macrolides has increased around the world including some countries in South America. Because of this resistance, it is necessary to test the therapeutic alternatives for treating this pathogen, including the newer quinolones. This study was carried out in order to compare the in
Brazilian Journal of Infectious Diseases. Publicado em: 2001-04
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12. Role of beta-lactamases and outer membrane proteins in multiple beta-lactam resistance of Enterobacter cloacae.
The chromosomal beta-lactamase and outer membrane proteins of Enterobacter cloacae were examined to determine their relative contributions to multiple antibiotic resistance in this organism. Mutants altered in beta-lactamase expression, whether derived in the laboratory or recovered from patients treated with one of the new beta-lactam antibiotics, were foun