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| Registros recuperados: 24 | |
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| Lazzari,A.M.; Oliveira,M.V.S.; Moreti,B.; Guimarães,G.; Krug,F.; Noleto,G.; Mesquita,A.J.; Neves,J.P.. |
| Vários aspectos relacionados à mastite bubalina precisam ser esclarecidos. Muitas condutas são adaptadas a essa espécie pelo conhecimento adquirido com a espécie bovina. Com este experimento, objetivou-se evidenciar particularidades da mastite em búfalas e vacas que tiveram uma glândula inoculada com 1,0 x 103 UFC de S. aureus. Os animais foram monitorados por cultura bacteriana do leite, California Mastitis Test(CMT), e escores para avaliação da severidade da mastite. Foram utilizados os seguintes critérios: temperatura retal, apetite, produção de leite (resposta sistêmica à inflamação), contagem de células somáticas (CCS), aparência/consistência da glândula e aparência da secreção láctea (resposta localizada à inflamação). Todos os animais desenvolveram... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bovino; Bubalino; Indução de mastite; S. aureus. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352014000501299 |
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| Hussein,Elsayed Alsaied Masoud; Mohammad,Ali Al-Hajry; Harraz,Farid Abourageh; Ahsan,Mohd Faisal. |
| Abstract Phytochemical content of plant extracts can be used effectively to reduce the metal ions to nanoparticles in one-step green synthesis process. In this study, six plant extracts were used for the synthesis of silver nanoparticles (AgNPs). Biologically synthesized AgNPs was characterized using UV-Vis Spectrophotometer, Field Emission Scanning Electron Microscope (FE-SEM), X-ray diffraction (XRD), Energy Dispersive X-ray spectroscopy (EDX) and Fourier Transform Infrared (FTIR) spectroscopy. The individual and combined effects of AgNPs and tetracycline against S. aureus and K. pneumoniae were assessed. Ginger, onion and sidr extracts supported AgNPs formation while arak, garlic and mint extracts failed to convert the silver ions to AgNPs. The present... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Silver nanoparticles; Biosynthesis; Plant extracts; Tetracycline; S. aureus; K. pneumoniae. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132019000100308 |
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| ARAÚJO,Wanderley Pereira de. |
| A partir de amostras de leite cru foram isoladas 201 cepas de S. aureus, as quais foram submetidas a provas de resistência a antibióticos pelo método dos discos impregnados com os seguintes antibacterianos: amicacina, ampicilina, cefalotina, cefoxitina, cloranfenicol, clindamicina, oxacilina, penicilina, tetraciclina, tobramicina e vancomicina. Com exceção de 88 (43,8%), 90 (44,8%), 24 (11,9%) e 40 (19,9%) cepas resistentes à penicilina, ampicilina, cloranfenicol e tetraciclina, respectivamente, a maioria das 201 cepas (95% ou mais) foi sensível aos antibióticos utilizados. As cepas resistentes a estes quatro antibióticos foram fagotipadas, empregando-se os Conjuntos Básicos Internacionais de bacteriófagos para cepas de origem humana e bovina,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tipagem de bacteriófagos; S. aureus; Leite; Testes de sensibilidade microbiana. |
| Ano: 1998 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-95961998000400003 |
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| Flamm,Robert K.; Sader,Helio S.; Jones,Ronald N.. |
| Ceftaroline, the active metabolite of the prodrug ceftaroline fosamil, is a cephalosporin with in vitro bactericidal activity against Gram-positive organisms, including methicillinsusceptible and -resistant Staphylococcus aureus, β-haemolytic and viridans group streptococci, and Streptococcus pneumoniae, as well as common Gram-negative organisms. In this study a total of 986 isolates collected in 2010 from patients in 15 medical centers in five Latin American countries from the Assessing Worldwide Antimicrobial Resistance Evaluation Program were identified as community-acquired respiratory tract or skin and soft tissue infection pathogens. Ceftaroline was the most potent agent tested against S. pneumoniae with a MIC90 value (0.12 µg/mL) that was eight-fold... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ceftaroline; AWARE; S. aureus; S. pneumoniae. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000500009 |
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| Jorge,Luciana Souza; Chueire,Alceu Gomes; Rossit,Andréa Regina Baptista. |
| Over the last 30 years, the pathogenesis of osteomyelitis has almost been totally elucidated, and many factors responsible for the persistence of this infection have been identified. Numerous antimicrobial agents with distinct spectrums of action, pharmacokinetics, and pharmacodynamics have been used in its treatment. Surgical techniques, including muscle grafts, the Ilizarov technique, and antibiotic bone cements, have been applied. However, bone infections are still a challenge. Despite the importance of isolation and identification of microorganisms to determine the antimicrobial treatment of bone infections, there are few systematic national studies about the etiological profile of these diseases. This article describes the current knowledge of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Osteomyelitis; Arthroplasty; S. aureus. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702010000300020 |
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| Lutz,Larissa; Machado,Adão; Kuplich,Nadia; Barth,Afonso Luís. |
| We describe a case of clinical failure of vancomycin treatment of Staphylococcus aureus infection and the laboratory characteristics of the organism in a tertiary referral university hospital in southern Brazil. An 11-month-old male patient presented with pneumonia and S. aureus was isolated from his respiratory tract. Initial treatment with oxacillin and gentamicin was ineffective. Vancomycin was added to the regimen as the patient worsened, but after the 30th day of vancomycin treatment S. aureus was isolated from the blood. This isolate had a minimum inhibitory concentration (MIC) for vancomycin of 4 µg/mL. After pre-incubation with vancomycin the isolate displayed an increase in the expression of vancomycin resistance and colonies grew in the presence... |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: S. aureus; Resistance; Vancomycin. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702003000300008 |
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| Damasco,Andreia Paredes; Costa,Thaina Miranda da; Morgado,Priscylla Guimarães Migueres; Guimarães,Lorrayne Cardoso; Cavalcante,Fernanda Sampaio; Nouér,Simone Aranha; Santos,Kátia Regina Netto dos. |
| ABSTRACT Introduction: This study aimed to characterize Staphylococcus aureus isolates from bloodstream infections in patients attending a teaching hospital, between 2011 and 2015. Methods: The minimum inhibitory concentration for daptomycin, linezolid, oxacillin, teicoplanin, vancomycin, and trimethoprim/sulfamethoxazole was accessed by broth microdilution. SCCmec type and clonal profile were determined by molecular tests. Vancomycin heteroresistance was evaluated using screening tests and by population analysis profile/area under the curve. Results: Among 200 S. aureus isolates, 55 (27.5%) were MRSA, carrying SCCmec II (45.5%) or IV (54.5%). The most frequent MRSA lineages were USA100 (ST5-II) (45.5%) and USA800 (ST5-IV) (30.9%). Six isolates were... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Bloodstream infection; S. aureus; Vancomycin; Daptomycin. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702019000200139 |
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| Gong,Jian; Li,Dongzhi; Yan,Jun; Liu,Yu; Li,Di; Dong,Jie; Gao,Yaping; Sun,Tao; Yang,Guang. |
| Background:Intracranial abscesses are associated with high mortality. Staphylococcus aureus is one of the main pathogens that cause intracranial infection. Until now, there is no report to identify the key effectors of S. aureus during the intracranial infection.Methods:The murine intracranial abscesses model induced by S. aureuswas constructed. The vital sign and survival rate of mice were observed to evaluate the infection. Histological examination was used to diagnose the pathological alterations of mouse tissues. The sensitivity of S. aureus to whole blood was evaluated by whole-blood killing assay.Results:In murine intracranial abscesses model, it was shown that the mortality caused by the accessory gene regulator (agr) locus deficient strain was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: S. aureus; Agr; Intracranial abscesses model. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702014000500501 |
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| Torres,A.R.; Sandjo,L.P.; Friedemann,M.T.; Tomazzoli,M.M.; Maraschin,M.; Mello,C.F.; Santos,A.R.S.. |
| In this study, we investigated the chemical composition, and antioxidant and antibacterial properties of ethanolic extracts of propolis (EEP) from Melipona quadrifasciata quadrifasciata and Tetragonisca angustula. Chemical composition of EEP was determined by colorimetry and chromatographic (HPLC-DAD and UPLC-Q/TOF-MS/MS) analysis. Antimicrobial activity of EEP was evaluated against gram-positive (S. aureus, methicillin-resistant S. aureus, E. faecalis) and gram-negative (E. coli and K. pneumoniae) bacteria by the minimal inhibitory concentration (MIC) test using the microdilution method. Furthermore, the growth curve and integrity of cell membrane of S. aureus and E. coli were investigated using standard microbiological methods. HPLC-DAD analysis showed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Stingless bees; Propolis; Antimicrobial activity; S. aureus; M. quadrifasciata quadrifasciata; T. angustula. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2018000600617 |
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| Rozenbaum,R.; Sampaio,M.G.; Batista,G.S.; Garibaldi,A.M.; Terra,G.M.F.; Souza,M.J.; Vieira,E.N.; Silva-Carvalho,M.C.; Teixeira,L.A.; Figueiredo,A.M.S.. |
| Community-acquired methicillin-resistant Staphylococcus aureus (CA-MRSA) is an emergent pathogen in Brazil. However, there are no data on the prevalence of CA-MRSA. We report here the first well-characterized case of severe life-threatening CA-MRSA infection in a child living in Rio de Janeiro city. The patient had many complications including hematogenous osteomyelitis and involvement of multiple sites requiring drainage of soft-tissue abscess, and pleural and pericardial empyema. The MRSA isolates recovered were genotyped using PFGE, SCCmec typing and multilocus sequence typing. Disk diffusion tests were performed following Clinical and Laboratory Standards Institute recommendations. In addition, the presence of Panton-Valentine leukocidin (PVL) was... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: CA-MRSA; MRSA; PVL; S. aureus; Antimicrobial resistance. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2009000800011 |
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| Rall,V.L.M.; Sforcin,J.M.; Augustini,V.C.M.; Watanabe,M.T.; Fernandes Jr.,A.; Rall,R.; Silva,M.G.; Araújo Jr.,J.P. |
| Food handlers, an important factor in food quality, may contain bacteria that are able to cause foodborne disease. The present study aimed to research coagulase-negative (CNS) and -positive staphylococci (CPS) in 82 food handlers, analyzing nasal and hand swabs, with identification of 62 CNS (75.6%) and 20 CPS strains (24.4%). Staphylococcal enterotoxins genes were investigated by PCR. In 20 CPS strains, 19 were positive for one or more genes. The percentage of CNS presenting genes for enterotoxins was high (46.8%). Despite of the staphylococcal species, the most common gene was sea (35.4%), followed by seh and sej (29.2%). The detection of new staphylococcal enterotoxins (SEs) genes showed a higher pathogenic potential in this genus. The presence of these... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Staphylococcal enterotoxins; Coagulase-negative staphylococci; S. aureus; Food handler. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822010000100011 |
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| Tobias,Fernando Luiz; Garcia,Luize Néli Nunes; Kanashiro,Milton Masahiko; Medina-Acosta,Enrique; Brom-de-Luna,João Gato; Almeida,Claudia Maria Costa de; Azevedo Junior,Romildo Rocha; Lemos,Môsar; Vieira-da-Motta,Olney. |
| Ostrich raising around the world have some key factors and farming profit depend largely on information and ability of farmers to rear these animals. Non fertilized eggs from ostriches are discharged in the reproduction season. Staphylococcus aureus and Escherichia coli are microorganisms involved in animal and human diseases. In order to optimize the use of sub products of ostrich raising, non fertilized eggs of four selected birds were utilized for development of polyclonal IgY antibodies. The birds were immunized (200ug/animal) with purified recombinant staphylococcal enterotoxin C (recSEC) and synthetic recRAP, both derived from S. aureus, and recBFPA and recEspB involved in E. coli pathogenicity, diluted in FCA injected in the braquial muscle. Two... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ostrich IgY antibodies; Inhibition; Recombinant proteins; E. coli; S. aureus. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000200015 |
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| Zhou,Huiqin; Du,Hong; Zhang,Haifang; Shen,Haiying; Yan,Ruhong; He,Yun; Wang,Min; Zhu,Xueming. |
| Staphylococcus aureus (S. aureus) is an important human pathogen, which commonly causes the acquired infectious diseases in the hospital and community. Effective and simple antibiotic treatment against S. aureus-related disease becomes increasingly difficult. Developing a safe and effective vaccine against S. aureus has become one of the world's hot spots once again. The key issue of developing the vaccine of S. aureus is how to find an ideal key pathogenic gene of S. aureus. It was previously suggested that EsxA might be a very important factor in S. aureus abscess formation in mice, but clinical experimental evidence was lacking. We therefore expressed EsxA protein through prokaryotic expression system and purified EsxA protein by Ni-affinity... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: S. aureus; EsxA; Anti-EsxA antibodies; Multi-drug resistant. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000100038 |
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| KIVANC,Merih; YAPICI,Evrim. |
| Abstract The survival of Escherichia coli O157: H7 and Staphylococcus aureus, which are foodborne pathogens was investigated during fermentation and storage of kefir. The kefir grains were inoculated with 5% of the whole fat UHT cow milk and the E. coli O157: H7 and S. aureus cultures were added separately to give 105 cfu mL-1 and left to incubate at 22 °C for 24 hours at first stage. During the incubation, the bacteria and yeast counts, pH and titratable acidity amounts were determined. In the second stage, E. coli O157: H7 and S. aureus cultures were separately added to produce 105 cfu mL -1 of kefir and was stocked at 5 °C for 3 days. Every day samples were taken and the same tests were done. During fermentation, in all samples the initial while TA was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Kefir; E. coli O157:H7; S. aureus; Lactic acid bacteria; Yeast. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612019000500225 |
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| Registros recuperados: 24 | |
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