Buscar
Mostrando ítems 91-100 de 859
SUSCEPTIBILIDADE DE Staphylococcus aureus ISOLADOS DE LEITE CRU A ANTIBIÓTICOS COMERCIAIS
(Universidade Federal de Goiás, 2018)
Abstract Milk is extremelly valuable to the human diet and an excellent substrate for the growth of a wide range of microorganisms, including Staphylococcus aureus, frequently found in raw milk and one of the most prevalent ...
Screening of wild type Streptomyces isolates able to overproduce clavulanic acid
(Sociedade Brasileira de Microbiologia, 2014-09-01)
The selection of new microorganisms able to produce antimicrobial compounds is hoped for to reduce their production costs and the side effects caused by synthetic drugs. Clavulanic acid is a β-lactam antibiotic produced ...
beta-Lactamase-based biosensor for the electrochemical determination of benzylpenicillin in milk
(Elsevier B.V., 2015-04-01)
Antibiotics are widely used in dairy cattle production, however this can pose a public health threat, particularly when antibiotic residues remain in the food products like milk. Therefore, new analytical solutions aiming ...
Detecção e identificação dos genes de beta-lactamases blaSHV, blaTEM e blaCTX-M em Klebsiella penumoniae isoladas em um Hospital Terciário do Estado de São Paulo
(Universidade Estadual Paulista (Unesp), 2009-03-13)
A produção de beta-lactamases de espectro estendido (ESBL) por bactérias gram-negativas causadoras de infecções hospitalares é a maior causa de falha terapêutica com cefalosporinas. Klebsiella pneumoniae, um importante ...
A general reaction mechanism for carbapenem hydrolysis by mononuclear and binuclear metallo-β-lactamases
(Nature Publishing Group, 2017-12)
Carbapenem-resistant Enterobacteriaceae threaten human health, since carbapenems are last resort drugs for infections by such organisms. Metallo-β-lactamases (MβLs) are the main mechanism of resistance against carbapenems. ...
New TEM-derived extended-spectrum β-lactamase and its genomic context in plasmids from Salmonella enterica serovar derby isolates from Uruguay
(American Society for Microbiology, 2006-02)
A small (8.2-kb) ColE1 plasmid encoding TEM-144 (a new β-lactamase with a ceftazidimase profile) was sequenced by a gene-walking strategy. The blaTEM allele was carried on a Tn2 element, disrupting a Rom protein gene. ...
Ausencia de beta-lactamasas en pseudomonas aeruginosa de origen animal y aguaLack of beta-lactamases in pseudomonas aeruginosa of animal origin and water
(Universidad Nacional del Nordeste. Facultad de Ciencias VeterinariasRevista Veterinaria, 2011-11-01)
Con el fin de conocer la sensibilidad a carbapenems (imipenem y meropenem), ceftazidime y aztreonam como indicadores fenotípicos de sustratos de β–lactamasas, se analizaron 30 cepas de Pseudomonas aeruginosa (18 de muestras ...
Detection of chromosomal bla(CTX-M-2) in diverse Escherichia coli isolates from healthy broiler chickens
(Wiley-Blackwell, 2014-10-01)
The rise of extended-spectrum beta-lactamase (ESBL)-producing Escherichia coli in food-producing animals is a growing concern for public health. We investigated ESBL producers isolated from broiler chickens in Brazil and ...
Multidrug-resistant Pseudomonas aeruginosa and Acinetobacter baumannii: resistance mechanisms and implications for therapy
(Expert Reviews, 2010-01-01)
Pseudomonas aeruginosa and Acinetobacter baumannii are major nosocomial pathogens worldwide. Both are intrinsically resistant to many drugs and are able to become resistant to virtually any antimicrobial agent. An increasing ...