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| Registros recuperados: 94 | |
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| Rossi,Ciro César; Pereira,Monalessa Fábia; Giambiagi-deMarval,Marcia. |
| Abstract The increasing threat of antimicrobial resistance has shed light on the interconnection between humans, animals, the environment, and their roles in the exchange and spreading of resistance genes. In this review, we present evidences that show that Staphylococcus species, usually referred to as harmless or opportunistic pathogens, represent a threat to human and animal health for acting as reservoirs of antimicrobial resistance genes. The capacity of genetic exchange between isolates of different sources and species of the Staphylococcus genus is discussed with emphasis on mobile genetic elements, the contribution of biofilm formation, and evidences obtained either experimentally or through genome analyses. We also discuss the involvement of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Horizontal gene transfer; Antimicrobial resistance; Coagulase negative staphylococcus; Biofilm; CRISPR; One Health. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572020000300303 |
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| Loth, Karine; Vergnes, Agnes; Barreto, Cairé; Voisin, Sébastien N; Meudal, Hervé; Da Silva, Jennifer; Bressan, Albert; Belmadi, Nawal; Bachère, Evelyne; Aucagne, Vincent; Cazevielle, Chantal; Marchandin, Hélène; Rosa, Rafael Diego; Bulet, Philippe; Touqui, Lhousseine; Delmas, Agnès F.; Destoumieux-garzón, Delphine. |
| Big defensins, ancestors of β-defensins, are composed of a β-defensin-like C-terminal domain and a globular hydrophobic ancestral N-terminal domain. This unique structure is found in a limited number of phylogenetically distant species, including mollusks, ancestral chelicerates, and early-branching cephalochordates, mostly living in marine environments. One puzzling evolutionary issue concerns the advantage for these species of having maintained a hydrophobic domain lost during evolution toward β-defensins. Using native ligation chemistry, we produced the oyster Crassostrea gigas BigDef1 (Cg-BigDef1) and its separate domains. Cg-BigDef1 showed salt-stable and broad-range bactericidal activity, including against multidrug-resistant human clinical isolates... |
| Tipo: Text |
Palavras-chave: MRSA; Antimicrobial peptides; Antimicrobial resistance; Defensins; Fibrils; Innate immunity; Mechanisms of action; Nuclear magnetic resonance. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00588/70057/68000.pdf |
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| Teixeira,Maxelle M; Pelli,Afonso; Santos,Vitorino M dos; Reis,Maria das G. |
| Our aim was to study the fauna of ants in the Hospital Universitário of the Universidade Federal do Triângulo Mineiro, municipality of Uberaba, Minas Gerais State, Brazil, as well as to identify the microorganisms the ants carry and their patterns of resistance to antibiotics. Sterile tubes (traps) containing honey were used to attract the ants. Traps were exposed for 3h, and those which attracted ants were considered the test group, while the ones that did not attract the insects constituted the control group. Only the ant species Tapinoma melanocephalum (Fabricius) was sampled. Sixty microorganisms were isolated from the sampled ants, including seven Gram-positive bacilli, 14 Gram-negative bacilli, 22 Gram-positive cocci and 17 filamentous fungi.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hospital infection; Pathogenic microorganism; Antimicrobial resistance; Distribution. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2009000400017 |
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| Miller, Gay Y.; Liu, Xuanli; McNamara, Paul E.; Bush, Eric J.. |
| Antibiotics have been used by pig producers for several decades, and are now used routinely. This study documents the current productivity and economic impacts of the use of antibiotics for growth promotion (AGP) by pig grower/finishers at the farm level. We evaluate the impacts of an AGP ban, and use of AGP by all pig grower/finishers for 61S90 days (a more production-efficient level), using data from the National Animal Health Monitoring System Swine 2000 Survey. Findings indicate that pig productivity improves with AGP. Relative to current use, an AGP ban would decrease producer profits by $1,400 per 1,020-head barn, and profits would increase by $1,992 for each grower/finisher barn when AGP is fed for 61 to 90 days. There is increasing concern about... |
| Tipo: Journal Article |
Palavras-chave: Antibiotics; Antimicrobial resistance; Growth promotion; Pigs; Production; Agricultural and Food Policy; Health Economics and Policy; Livestock Production/Industries. |
| Ano: 2005 |
URL: http://purl.umn.edu/59680 |
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| Vélez,D Cortes; Rodríguez,V; García,N Verjan. |
| ABSTRACT Salmonella enterica is responsible for alimentary toxic infections associated with the consumption of contaminated poultry products and the antimicrobial resistant patterns of Salmonella circulating in the Tolima region are currently unknown. To address this issue, both the phenotype and genotype antibiotic resistance patterns of 47 Salmonella isolated from raw chicken carcasses sold at the Ibague city were analyzed by the disc diffusion, microdilution and PCR assays. All 47 Salmonella isolates showed resistance to five or more antimicrobial agents. Resistance to Ampicillin (AMP), Amikacin (AMK), Gentamicin (GEN), Tobramycin (TOB), Cefazoline (CFZ), Cefoxitin (FOX), Nitrofurantoin (NIT), Trimethoprim-Sulfamethoxazole (SXT), Tetracycline (TET),... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antimicrobial resistance; Poultry products; Serovars. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000200347 |
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| Paravisi,M; Laviniki,V; Bassani,J; Kunert Filho,HC; Carvalho,D; Wilsmann,DE; Borges,KA; Furian,TQ; Salle,CTP; Moraes,HLS; Nascimento,VP. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antimicrobial resistance; Campylobacter jejuni; GyrA; Mutation; Poultry; TetO. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000200323 |
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| Freitas Neto,OC de; Penha Filho,RAC; Barrow,P; Berchieri Junior,A. |
| Salmonellosis is a worldwide disease caused by bacteria of the genus Salmonella. Currently, there are over 2,500 identified serovars of Salmonella. A reduced number of these serovars, about eighty, are implicated in most animals and human diseases. Most cases of salmonellosis in humans are associated with the consumption of contaminated food products such as beef, pork, poultry meat, eggs, vegetables, juices and other kind of foods. It may also be associated with the contact between humans and infected pet animals. Therefore, the chain of human salmonellosis is very complex and in most cases the origin of the infection is difficult to establish. The use of antimicrobial agents to treat and to prevent bacterial infections in humans and animals, as well as... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antimicrobial resistance; Beef; Food; Pork; Poultry; Salmonella spp; Vegetables. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000100001 |
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| MIRANDA,ANDREA L.; CORDEIRO,SORAIA M.; REIS,JOICE N.; CARDOSO,LUCAS G.; GUIMARÃES,ALAÍSE G.. |
| ABSTRACT Increasing antimicrobial resistance in Salmonella species has been a serious problem for public health worldwide. This study examines Salmonella spp. recovered from foods and clinical samples on serotype, antimicrobial resistance and PFGE genotypes. It identified 91 salmonellae, belonging to 31 different serotypes, from 36 isolates from food and 55 clinical samples. Salmonella Infantis (16.5%) and Salmonella Enteritidis (13.7%) are the most common among food isolates, whereas Salmonella Enteritidis (29.0%) and Salmonella Typhimurium (16.0%) mainly causes human salmonellosis. Antimicrobial susceptibility data showed that 63.0% of the isolates were fully susceptible to 12 antibiotics tested. Nalidixic acid showed high resistance rates, 32.7% and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Salmonella; Salmonella Infantis; Salmonella Enteritidis; Antimicrobial resistance. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000301143 |
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| Colombo,Arnaldo L.; Janini,Mario; Salomão,Reinaldo; Medeiros,Eduardo A. S.; Wey,Sergio B.; Pignatari,Antonio C. C.. |
| Several epidemiological changes have occurred in the pattern of nosocomial and community acquired infectious diseases during the past 25 years. Social and demographic changes possibly related to this phenomenon include a rapid population growth, the increase in urban migration and movement across international borders by tourists and immigrants, alterations in the habitats of animals and arthropods that transmit disease, as well as the raise of patients with impaired host defense abilities. Continuous surveillance programs of emergent pathogens and antimicrobial resistance are warranted for detecting in real time new pathogens, as well as to characterize molecular mechanisms of resistance. In order to become more effective, surveillance programs of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Emerging infectious diseases; HIV; AIDS; Candidemia; Antimicrobial resistance; Bacteremia; Sepsis; Nosocomial infectious. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652009000300020 |
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| Carneiro,V.C.; Lessa,D.A.B.; Guttmann,P.M.; Magalhaes,H.; Aquino,M.H.C.; Cunha,L.E.R.; Arais,L.R.; Cerqueira,A.M.F.. |
| ABSTRACT Respiratory diseases are common in young horses but little is known about such infections in mule foals. This study aimed to characterize Escherichia coli and Klebsiella sp. isolated from tracheal wash (TW) and fecal samples (FS) of mule foals, with or without cytological evidence of respiratory disease. Strains were analyzed against 13 antimicrobials, for presence of Extended spectrum beta-lactamase (ESBL), and virulence genes. Phylogrouping and Randomic (RAPD)-PCR profiles were used to evaluate their genetic relatedness. E. coli strains from TW and FS showed greatest resistance to tetracycline, while Klebsiella strains were mainly resistant to ampicillin; multidrug resistance and ESBL production were also detected. The blaCTX gene prevailed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Escherichia coli; Klebsiella; Respiratory disease; Virulence; Antimicrobial resistance. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000501073 |
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| Costa,M.M.; Drescher,G.; Maboni,F; Weber,S.S.; Schrank,A.; Vainstein,M.H.; Schrank,I.S.; Vargas,A.C.. |
| Virulence factors and antimicrobial resistance patterns of Escherichia coli isolates were evaluated. A total of 80 E. coli isolates were evaluated, being 64 from clinical samples (intestinal content and fragments of organs from diarrheic piglets), seven from feces of clinically healthy piglets and sows, and nine environmental samples (five from facilities, two from feed, one from insect, and one from waste). Molecular characterization was performed by PCR detection of fimbriae and toxin genes and plasmid content determination. The isolates were also characterized according to their resistance or sensitivity to the following drugs: ampicillin, trimethoprim:sulfamethoxazole, tetracycline, amikacine, colistin, norfloxacin, florfenicol, enrofloxacin,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Swine; Colibacillosis; Fimbriae; Toxin; Antimicrobial resistance. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352010000100004 |
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| Machado,T.R.O.; Correa,M.G.; Marin,J.M.. |
| Um total de 109 cepas de Staphylococci coagulase-negativa foi isolado de leite de vacas com mastite clínica e subclínica, em 35 fazendas, situadas em nove estados brasileiros, no período de fevereiro a maio de 2005. Os isolados foram investigados em relação a susceptibilidade in vitro a diversos agentes antimicrobianos. A resistência à penicilina foi a observação mais freqüente (93,5%), seguida por sulfonamida (88,9%), novobiocina (88,6%) e ampicilina (85,3%). Todas as cepas examinadas mostraram resistência a pelo menos uma das drogas antimicrobianas testadas. Cepas apresentando resistência múltipla foram extremamente comuns, com 10,0% dos microrganismos isolados apresentando resistência a todas as drogas antimicrobianas. Os resultados obtidos indicaram... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coagulase-negative Staphylococci; Antimicrobial resistance; Bovine mastitis. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352008000100041 |
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| Rubião,Cynthia Annes; Franco,Robson Maia; Mesquita,Eliana de Fátima Marques de; Miguel,Marco Antonio Lemos; Cabral,Claudius Couto; Fonseca,Ana Beatriz Monteiro. |
| ABSTRACT The aim of this study was to determine and compare the Most Probable Number (MPN) of Total Coliforms (TC), Escherichia coli and Enterococcus spp. and to characterize the antimicrobial resistance profiles of Enterococcus spp. isolated from oysters collected in the Barra de Guaratiba Mangrove, Rio de Janeiro, Brazil. The enumeration of E. coli has been used to indicate fecal contamination and hygienic-sanitary conditions of bivalve molluscs. Enterococci are capable to transfer several antimicrobial resistance genes to pathogenic bacteria, including those from Gram-negative group. The oysters were bought from local fishermen and a total of 123 individuals were analyzed. The TC, E. coli and Enterococcus spp. MPN mean were 26,300/100 g, 3,260/100 g and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Water pollution; Escherichia coli; Enterococcus spp.; Antimicrobial resistance; Bivalve molluscs. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100308 |
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| Kumar,Sanjeet; Das,Gitishree; Shin,Han-Seung; Kumar,Pradeep; Patra,Jayanta Kumar. |
| ABSTRACT >The in vitro antimicrobial activity of Gymnopetulum chinense (Cucurbitaceae), a lesser known climber of Eastern Ghats and recently recorded species from Odisha, India was studied against five selected human pathogenic bacteria (Streptococcus mutans, S. pyogenes, Vibrio cholerae, Shigella flexneri and Salmonella typhi), by agar well diffusion (AWD), disc diffusion (DD) and broth dilution methods. Different solvent extracts were prepared from the leaves of G. chinense using various solvents viz. n-hexane, chloroform, methanol, acetone and aqueous. The nomenclature, detailed description and photographs of the plant are provided to facilitate its easy identification. The leaf extract showed presence of phenolic compounds, tannin, saponin,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antibacterial activity; Gymnopetulum chinense; Cucurbits; Streptococcus pyogenes; Antimicrobial resistance. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100438 |
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| Bedran,Maria B. M.; Camargos,Paulo A. M.; Leocádio Filho,Geraldo; Bedran,Renata M.; Najar,Henrique C.. |
| We monitored the susceptibility to penicillin of invasive strains of Streptococcus pneumoniae in two reference laboratories; 502 positive cultures from patients with an active invasive infectious process were analyzed. Streptococcus pneumoniae was identified through conventional procedures, and the oxacillin disc diffusion method was used to check for penicillin susceptibility. Statistical analysis included calculations of the frequency distribution, with 95% confidence intervals (CI), as well as chi-square tests and chi-square for linear trend for temporal analysis of susceptibility. The bacterium was isolated from patients less than a year old (40.7% of the isolates), from infants (55.9%), and from individuals less than 15 years old (64.4%). The majority... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Streptococcus pneumoniae; Antimicrobial resistance; Invasive disease. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702005000500006 |
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| Registros recuperados: 94 | |
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