Consulta: subjectFacets:"Antimicrobial susceptibility"
Registros recuperados: 22
Data/hora: 09/06/2024 05:59:49

Clonal diversity and antimicrobial resistance of Enterococcus faecalis isolated from endodontic infections
Provedor de dados: 69
Autores: Suliman Al-Badah,Abdulhakim; S.S. Ibrahim,Abdelnasser; Al-Salamah,Ali A; Ibrahim,Shebl Salah S.
Background Enterococcus faecalis is considered to be one of most prevalent species in the oral cavity, particularly in endodontic infections. The aim of the present study was to investigate the prevalence of E. faecalis in dental root canals, clonal diversity by restriction fragment length polymorphism (RFLP) and randomly amplified polymorphic DNA (RAPD-PCR) analysis, and the antibiotic susceptibility of E. faecalis isolates. Results Among the bacterial strains isolated from dental root canal specimens (n = 82), E. faecalis was determined to have the highest prevalence followed by Streptococcus viridians, Leuconostoc mesenteroides, Staphylococcus aureus, Streptococcus mitis, and Pediococcus pentosaceus. Cluster analysis of RAPD-PCR and RFLP patterns of the...
Tipo: Journal article
Palavras-chave: Antimicrobial susceptibility; Endodontic infection; Enterococcus faecalis; Genotype; RAPD; RFLP.
Ano: 2015
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582015000300006

Environmental parameters and antimicrobial susceptibility of enterobacteriaceae isolated from estuarine waters of São Vicente, São Paulo state, Brazil
Provedor de dados: 80
Autores: Lourenço,N. G. G. S.; Takahashi,C. K.; Lopes,T. F.; Lopes,C. A. M.
Diseases transmitted by water consists a serious public health problem and enterobacteria are the main group of microorganisms responsible for outbreaks in humans. Such pathogenic bacteria proliferate in water polluted by domestic and industrial sewage and reach the population through seawater contact. The aim of the present work was to study environmental parameters as well as to identify Enterobacteriaceae species and their antimicrobial susceptibility in water samples collected from the estuarine area of São Vicente city (São Paulo State, Brazil). Strains were identified by using traditional biochemical tests described in literature and antimicrobial susceptibility tests were carried out using the disk diffusion method. Out of 26 samples, Escherichia...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Estuarine water; Environmental parameters; Enterobacteriaceae; Antimicrobial susceptibility.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992007000200006

Antimicrobial Resistance in Salmonella Serovars Isolated From an Egg-Producing Region in Brazil
Provedor de dados: 89
Autores: Benevides,VP; Rubio,MS; Alves,LBR; Barbosa,FO; Souza,AIS; Almeida,AM; Casas,MRT; Guastalli,EAL; Soares,NM; Berchieri Jr,A.
ABSTRACT Fowl paratyphoid infections are caused by different Salmonella serovars that can affect a wide range of hosts. Due to its complex epidemiology, Salmonella serovar identification is crucial for the development and implementation of monitoring and control programs in poultry farms. Moreover, the characterization of the antimicrobial resistance profiles of Salmonella strains isolated from livestock is relevant to public health because they are a common causative agent of foodborne diseases. The objective of this study was to investigate the presence of Salmonella spp. and to identify the antimicrobial resistance profiles of strains isolated in the midwestern region of São Paulo state, which accounts for the highest production of table eggs in Brazil....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antimicrobial susceptibility; Foodborne disease; Salmonellosis; Multi-drug resistance; Public health.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2020000200319

Antimicrobial Resistance and genes associated to the host-microbe interaction of Pasteurella multocida isolates from swine in Western Cuba
Provedor de dados: 101
Autores: Espinosa,Ivette; Báez,M; Vichi,J; Martínez,Siomara.
Pasteurella multocida is an important veterinary pathogen that causes a range of animal diseases, including fowl cholera, hemorrhagic septicemia in cattle and atrophic rhinitis in swine. P. multocida is generally recognized as a secondary invader contributing substantially to respiratory diseases in pigs by aggravation of lung lesions. Five capsule serogroups are routinely identified in P. multocida (A, B, D, E, and F) and each is generally associated with, but not completely restricted, to a specific host. A total of 16 isolates of Pasteurella multocida capsular genotype A and two isolates capsular genotype D were characterized for their susceptibilities to 10 antibiotics and the presence of four genes for virulence factors associated to adherence. The...
Tipo: Journal article
Palavras-chave: P. multocida; Virulence factor; PCR; Antimicrobial susceptibility.
Ano: 2012
URL: http://scielo.sld.cu/scielo.php?script=sci_arttext&pid=S0253-570X2012000300003

Multidrug-resistant urinary tract isolates of escherichia coli from Ribeirão Preto, São Paulo, Brazil
Provedor de dados: 55
Autores: Santo,Edilene; Salvador,Miriam Mendonça; Marin,José Moacir.
Multiple resistances to antimicrobial drugs arising in Escherichia coli isolates may complicate therapeutic management of urinary tract infection (UTI) by this organism. In order to assess the multidrug resistance (MDR) among urinary E. coli isolates, we have tested 11 antimicrobial drugs against 67 isolates from outpatients attended in a tertiary-care teaching hospital and of 78 isolates from a municipal health unit, respectively in Ribeirão Preto, State of São Paulo, Brazil. Seventy-six percent and 22% of the isolates from the tertiary-care hospital and the municipal unit, respectively, were resistant to three or more different classes of agents, and were considered to present MDR. Among the isolates from the hospital patients, 73.0%, 65.0%, 58.0%, 58.0%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Urinary tract infections; Escherichia coli; Antimicrobial susceptibility; Multidrug-resistance.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702007000600010

In vitro activity of tigecycline, a new glycylcycline, tested against 1,326 clinical bacterial strains isolated from Latin America
Provedor de dados: 55
Autores: Gales,Ana C.; Jones,Ronald N.; Andrade,Soraya S.; Pereira,Andrea S.; Sader,Hélio S.
The in vitro activity of tigecycline (former GAR-936), a new semisynthetic tetracycline, was evaluated in comparison with tetracycline and other antimicrobial agents. MATERIAL AND METHODS: A total of 1,326 contemporary clinical isolates collected from the Latin American region were collected in 2000-2002 period and tested with microdilution broth according to the CLSI guidelines. The bacterial pathogens evaluated included Staphylococcus aureus (505), Streptococcus pneumoniae (269), coagulase-negative staphylococci (CoNS; 227), Haemophilus influenzae (129), Enterococcus spp. (80), Moraxella catarrhalis (54), beta-haemolytic streptococci (28), viridans group streptococci (26), and Neisseria meningitidis (8) RESULTS:Tigecycline demonstrated excellent activity...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Antimicrobial susceptibility; Tigecycline; Latin America and SENTRY.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702005000500001

Frequency and antimicrobial susceptibility of Shigella species isolated in Children Medical Center Hospital, Tehran, Iran, 2001-2006
Provedor de dados: 55
Autores: Pourakbari,Babak; Mamishi,Setareh; Mashoori,Negar; Mahboobi,Nastaran; Ashtiani,Mohammad H; Afsharpaiman,Shahla; Abedini,Masomeh.
Appropriate antimicrobial treatment of shigellosis depends on identifying its changing resistance pattern over time. We evaluated 15,255 stool culture submitted from July 2001 to June 2006 to the Laboratory of Children Medical Center Hospital. Specimen culture, bacterial identification, and disk diffusion susceptibility testing were performed according to National Committee for Clinical Laboratory Standards guidelines. From 15,255 stool samples, 682 (4.5%) were positive for Shigella species. The most common species of Shigella were S. flexneri (48%) and S. sonnei (45%); other results were S. dysenteriae (5%) and S. boydii (2%). The rate of Sensitivity to ceftriaxone (95%), ceftizoxime (94%), and nalidixic acid (84%) were among our isolates. Resistance to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Shigella; Antimicrobial susceptibility; Dysentery.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702010000200007

Surveillance of pediatric infections in a teaching hospital in Mato Grosso do Sul, Brazil
Provedor de dados: 55
Autores: Chang,M.R.; Carvalho,N.C.P.; Oliveira,A.L.L.; Moncada,P.M.F.; Moraes,B.A.; Asensi,M.D.
Nosocomial infections (NI) result in considerably high mortality and morbidity rates, especially among pediatric patients. Considering current worldwide changes, information about the occurrence of pathogens and susceptibility tests are now seen as decisive for optimizing treatment. The purpose of this research was to determine the frequency of microorganisms, antimicrobial and genetic profiles, and risk factors associated with nosocomial infections in a teaching hospital in Campo Grande, Mato Grosso do Sul. From January 1998 to December 1999, 108 patients were characterized as having nosocomial infection, from which 137 pathogens were isolated. Identification and antimicrobial susceptibility was determined by conventional and automated techniques....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Infant; Nosocomial infection; Antimicrobial susceptibility.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702003000200009

Emergence of clonal complex 5 (CC5) methicillin-resistant Staphylococcus aureus (MRSA) isolates susceptible to trimethoprim-sulfamethoxazole in a Brazilian hospital
Provedor de dados: 56
Autores: Teixeira,M.M.; Araújo,M.C.; Silva-Carvalho,M.C.; Beltrame,C.O.; Oliveira,C.C.H.B.; Figueiredo,A.M.S.; Oliveira,A.G.
In this study, genotyping techniques including staphylococcal chromosomal cassette mec (SCCmec) typing, pulsed-field gel electrophoresis (PFGE), multilocus sequence typing (MLST) and restriction-modification tests were used to compare the molecular characteristics of methicillin-resistant Staphylococcus aureus (MRSA) isolates recovered at two times within a 10-year interval (1998 and 2008) from a tertiary Brazilian hospital. In addition, the antimicrobial susceptibility profiles were analyzed. All 48 MRSA isolates from 1998 and 85.7% from 2008 (48/56 isolates) displayed multidrug-resistance phenotypes and SCCmec III. All but one of the 13 representative SCCmec III isolates belonged to CC8 and had PFGE patterns similar to that of the BMB9393 strain...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: MRSA; Antimicrobial susceptibility; CC5; Cordobes clone; Trimethoprim-sulfamethoxazole.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2012000700011

Antimicrobial susceptibility among Enterococcus isolates from the city of Porto Alegre, RS, Brazil
Provedor de dados: 58
Autores: d'Azevedo,Pedro Alves; Dias,Cícero Armídio Gomes; Lemos,Sibele Krebs; Bittencourt,José Augusto Ferreira; Teixeira,Lúcia Martins.
Resistance to several classes of antimicrobial agents is a remarkable characteristic of enterococcal strains increasingly reported worldwide. Information about strains isolated in the southern region of Brazil is still limited. In this study, a total of 455 consecutive enterococcal isolates recovered from patients living in Porto Alegre, Brazil, were identified at species level and evaluated for their antimicrobial susceptibilities by agar diffusion testing. The most frequent species was E. faecalis (92.8%), followed by E. faecium (2.9%), E. gallinarum (1.5%), E. avium (1.1%), E. hirae (0.7%), E. casseliflavus (0.4%), E. durans (0.4%), and E. raffinosus (0.2%). According to the results of disk tests 62.0% of the strains were resistant to tetracycline,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Enterococcal; Antimicrobial susceptibility; Resistance.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822004000200005

A suitable procedure to choose antimicrobials as controlling agents in fermentations performed by bacteria
Provedor de dados: 58
Autores: Oliveira,Romulo C.; Gomez,José G.C.; Torres,Bayardo B.; Bueno Netto,Celso L.; Silva,Luiziana F. da.
This work evaluated the influence of nitrofurantoin, erythromycin and streptomycin at 50, 25 and 12,5% of the minimal inhibitory concentration (MIC) on maximum specific growth rate (µmax) and specific polymer accumulation rate (µPHB) of Alcaligenes eutrophus, considered resistant to those antimicrobials. Nitrofurantoin strongly affected µmax even at 50% MIC. Streptomycin moderately affected µmax only at 50%MIC. Nitrofurantoin showed the most harmful effect on µPHB when 50% MIC was applied and erythromycin was not harmful.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Antimicrobial susceptibility; MIC; PHB; Alcaligenes eutrophus; Ralstonia eutropha.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822000000200004

Characterization of Klebsiella pneumoniae associated with cattle infections in southwest China using multi-locus sequence typing (MLST), antibiotic resistance and virulence-associated gene profile analysis
Provedor de dados: 58
Autores: Cheng,Fangjun; Li,Zhangcheng; Lan,Shimei; Liu,Wei; Li,Xiaoyan; Zhou,Zuoyong; Song,Zhenhui; Wu,Juan; Zhang,Manli; Shan,Wenjie.
Abstract Klebsiella pneumoniae is important human and animal pathogen that causes a wide spectrum of infections. In this study, isolates from cattle nasal swabs samples were identified by 16S rRNA, and to evaluate the antimicrobial susceptibility, virulence gene carrying levels, and multilocus sequence typing of K. pneumoniae isolates. 33 isolates of K. pneumoniae were isolated and identified in 213 nasal swabs samples, of which 12 were hypervirulent K. pneumoniae strains. Extended Spectrum Beta-Lactamases genes were found in 93.4% of the strains. Of which, TEM was the most prevalent (93.4%), followed by CTX-M and SHV were 57.6% and 39.4%, respectively. A main mutation pattern of quinoloneresistance-determining region, Thr83-Ieu and Asp87-Asn in gyrA and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cattle; Antimicrobial susceptibility; Klebsiella pneumonia; MLST; Virulence genes.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000500093

Distribution, detection of enterotoxigenic strains and antimicrobial drug susceptibility patterns of Bacteroides fragilis group in diarrheic and non-diarrheic feces from Brazilian infants
Provedor de dados: 58
Autores: Ferreira,Débora Paula; Silva,Vânia Lúcia; Guimarães,Danielle Aparecida; Coelho,Cíntia Marques; Zauli,Danielle Alves Gomes; Farias,Luiz Macêdo; Carvalho,Maria Auxiliadora Roque; Diniz,Claudio Galuppo.
Despite the importance of gastrointestinal diseases and their global distribution, affecting millions of individuals around the world, the role and antimicrobial susceptibility patterns of anaerobic bacteria such as those in the Bacteroides fragilis group (BFG) are still unclear in young children. This study investigated the occurrence and distribution of species in the BFG and enterotoxigenic strains in the fecal microbiota of children and their antimicrobial susceptibility patterns. Diarrheic (n=110) and non-diarrheic (n=65) fecal samples from children aged 0-5 years old were evaluated. BFG strains were isolated and identified by conventional biochemical, physiological and molecular approaches. Alternatively, bacteria and enterotoxigenic strains were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bacteroides fragilis group; ETBF; Antimicrobial susceptibility; Diarrhea.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822010000300010

Virulence genes and antimicrobial resistance of Pasteurella multocida isolated from poultry and swine
Provedor de dados: 58
Autores: Furian,Thales Quedi; Borges,Karen Apellanis; Laviniki,Vanessa; Rocha,Silvio Luis da Silveira; Almeida,Camila Neves de; Nascimento,Vladimir Pinheiro do; Salle,Carlos Tadeu Pippi; Moraes,Hamilton Luiz de Souza.
Abstract Pasteurella multocida causes atrophic rhinitis in swine and fowl cholera in birds, and is a secondary agent in respiratory syndromes. Pathogenesis and virulence factors involved are still poorly understood. The aim of this study was to detect 22 virulence-associated genes by PCR, including capsular serogroups A, B and D genes and to evaluate the antimicrobial susceptibility of P. multocida strains from poultry and swine. ompH, oma87, plpB, psl, exbD-tonB, fur, hgbA, nanB, sodA, sodC, ptfA were detected in more than 90% of the strains of both hosts. 91% and 92% of avian and swine strains, respectively, were classified in serogroup A. toxA and hsf-1 showed a significant association to serogroup D; pmHAS and pfhA to serogroup A. Gentamicin and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pasteurellosis; Virulence factors; Multiplex-PCR; Antimicrobial susceptibility.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822016000100210

Increase resistant rates and ESBL production between E. coli isolates causing urinary tract infection in young patients from Iran
Provedor de dados: 58
Autores: Pourakbari,Babak; Ferdosian,Farzad; Mahmoudi,Shima; Teymuri,Mostafa; Sabouni,Farah; Heydari,Hossein; Ashtiani,Mohammad Taghi Haghi; Mamishi,Setareh.
Emerging antimicrobial resistance rates and Extended-spectrum beta-lactamase producing Escherichia coli recovered from urinary tract infections (UTI) is an increasing problem in specific regions, limiting therapeutic options. One hundred E. coli isolates causing UTI in patients with age from 2 months to 12 years admitted at CMC in the period of April 2009 to March 2010 were tested for antibiotic susceptibility using the disk diffusion method. Surprisingly high resistance rates were recorded for E. coli against TMP/SMX (84%), cefalotin (66%), cefuroxime (50%), cefixime (50%) and ceftriaxone (45%). Antimicrobial susceptibility of E. coli isolates was followed by meropenem (98%), amikacin (95%), nitrofurantoin (91%) and gentamicin (68%). Extended spectrum...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: E. coli; Urinary Tract Infection; Antimicrobial susceptibility; ESBL.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000200041

Prevalence of Group B Streptococcus serotypes III and V in pregnant women of Rio de Janeiro, Brazil
Provedor de dados: 58
Autores: Soares,Georgia Cristina Tavolaro; Alviano,Daniela Sales; Santos,Gabriela da Silva; Alviano,Celuta Sales; Mattos-Guaraldi,Ana Luiza; Nagao,Prescilla Emy.
GBS serotypes III and V were the most prevalent in pregnant women and exhibited resistance to tetracycline, clindamycin and sulfamethoxazole/trimethoprim. Serotype III showed high sialic acid content and PFGE analysis discerned 33 heterogeneous profiles. Phenotypic and genotypic characterization could be relevant to control GBS infections unaffected by intra-partum chemoprophylaxis.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Group B Streptococcus; Antimicrobial susceptibility; Sialic acid; PFGE.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000300032

Antimicrobial susceptibility and fluctuations in clonal complexes of serogroup 6 Streptococcus pneumoniae isolates collected from children in Beijing, China, between 1997 and 2016
Provedor de dados: 58
Autores: Shi,Wei; Liu,Ying; Meng,Qinghong; Yuan,Lin; Gao,Wei; Yao,Kaihu.
ABSTRACT This study examined the antimicrobial susceptibility patterns and clonal complex (CC) characteristics of serogroup 6 Streptococcus pneumoniae isolates collected from children in Beijing, China, between 1997 and 2016. Serotypes were determined using the Quellung reaction, and the antimicrobial susceptibility profiles of the isolates were determined using the disc-diffusion method or by E-test. Sequence types (STs) were assigned based on multilocus sequence typing. A total of 250 isolates were examined, with 55.2%, 30.0%, 12.8%, and 2.0% of isolates identified as serotypes 6A, 6B, 6C, and 6D, respectively. All of the isolates were susceptible to levofloxacin and vancomycin, and the non-suceptibitility rate to penicillin was 41.6%. Eighty-two...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Streptococcus pneumoniae; Children; Antimicrobial susceptibility; Clonal complex (CC); Sequence type (ST).
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000400891

Prevotella intermedia and Porphyromonas gingivalis isolated from osseointegrated dental implants: colonization and antimicrobial susceptibility
Provedor de dados: 58
Autores: Pfau,Eduardo Augusto; Avila-Campos,Mario Julio.
The colonization and antimicrobial susceptibility of P. intermedia and P. gingivalis isolated from peri-implant and gingival sulcus samples were determined. Samples were collected from 30 patients submitted to implant in three different times: at the moment of the surgery, 20 and 60 days after the implant installation. Organisms were identified by using a biochemical tests or API 32-A kit and by PCR. The antimicrobial susceptibility was determined by using an agar dilution method. Nineteen P. intermedia (4 from peri-implant sites and 15 from gingival sulcus), and only seven P. gingivalis from gingival sulcus were isolated. Organisms were detected by PCR from seven peri-implant and 32 gingival samples. Bacteria were susceptible to the used antibiotics...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Porphyromonas gingivalis; Prevotella intermedia; Implants; Antimicrobial susceptibility.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822005000300014

Isolation of Helicobacter pylori in gastric mucosa and susceptibility to five antimicrobial drugs in Southern Chile
Provedor de dados: 58
Autores: Otth,Laura; Wilson,Myra; Fernández,Heriberto; Otth,Carola; Toledo,Claudio; Cárcamo,Victoria; Rivera,Paula; Ruiz,Luis.
Helicobacter pylori colonizes more than 50% of the world population thus, it is considered an important cause of gastric cancer. The aim of this study was to determine the isolation frequency of H. pylori in Southern Chile from patients with symptomatology compatible with gastritis or gastric ulcer and to correlate these findings with demographic parameters of infected patients and the susceptibility profiles of the isolated strains to the antimicrobial drugs used in the eradication treatments. A total of 240 patients were enrolled in the study. Each gastric biopsy was homogenized and seeded onto blood agar plates containing a selective antibiotics mixture (DENT supplement). Plates were incubated at 37° C in a microaerophilic environment for five days. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Helicobacter pylori; Antimicrobial susceptibility; Gastric ulcer.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000200005

Occurrence of Salmonella spp. and generic Escherichia coli on beef carcasses sampled at a brazilian slaughterhouse
Provedor de dados: 58
Autores: Silva,Fabiana Fernanda Pacheco da; Horvath,Mariana Bandeira; Silveira,Juliana Guedes; Pieta,Luiza; Tondo,Eduardo Cesar.
A total of 120 beef carcasses were analyzed during processing at a slaughterhouse in southern Brazil. The carcasses were sampled by swab at three different steps of the slaughter line and then they were tested for Salmonella and E. coli. The Salmonella isolates were also examined for antimicrobial susceptibility. Salmonella prevalence distribution was modeled and the probability of contamination was simulated using @Risk program and 10,000 interactions. Results demonstrated that 4 beef carcasses (3.3%) were positive for Salmonella only in the first point. The six isolates of Salmonella were classified: S. Newport (n = 3), S. Saintpaul (n = 2) and S. Anatum (n = 1). No Salmonella strains exhibited resistance to any of the antimicrobials tested. As expected,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Salmonella; E. coli; Beef carcasses; Slaughter line; Antimicrobial susceptibility.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000100004

Antimicrobial susceptibility of Salmonella Gallinarum and Salmonella Pullorum isolated from ill poultry in Brazil
Provedor de dados: 65
Autores: Penha Filho,Rafael Antonio Casarin; Ferreira,Joseane Cristina; Kanashiro,Ana Maria Iba; Darini,Ana Lúcia da Costa; Berchieri Junior,Angelo.
ABSTRACT: Salmonella Gallinarum (S. Gallinarum) and Salmonella Pullorum (S. Pullorum) are poultry host-specific, agents of fowl typhoid and pullorum disease, respectively. These biovars cause septicemic infections, resulting in high mortality. Outbreaks are frequently reported worldwide, causing losses due to the elimination of infected flocks and treatments. The use of antimicrobial agents is frequent in poultry farms to prevent or treat gastrointestinal infections. In the present research it was evaluated the antimicrobial susceptibility of 50 S. Gallinarum and S. Pullorum isolates, from outbreaks that occurred between 1987 to 1991 and 2006 to 2013. The comparison of the susceptibility profiles showed that all isolates were susceptible to β-lactams. All...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Quinolones; Chicken; Fowl typhoid; Antimicrobial susceptibility; Salmonella.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000300513

Susceptibility profile of Brazilian Rhodococcus equi isolates against azithromycin, clarithromycin and erythromycin
Provedor de dados: 65
Autores: Gressler,Letícia Trevisan; Silveira,Bibiana Petri da; Schwab,Marcelo Luís; Vargas,Agueda Castagna de; Pötter,Luciana; Botton,Sônia de Avila.
Rhodococcus equi infection treatment is usually a macrolide (azithromycin - AZM, clarithromycin - CLR and erythromycin - ERY) and rifampicin combination. However, resistance cases have been reported, especially for ERY. In view of the need of a study about Brazilian isolates susceptibility profile, this study aimed to characterize the minimum inhibitory concentration (MIC) of the macrolides - AZM, CLR and ERY - against 44 R. equi isolates. It was found all isolates CLR and AZM sensitive; however, for ERY, 27% (12/44) were classified as intermediate sensitivity. R. equi Brazilian isolates used here showed a large susceptibility profile, except against ERY, for which it was observed some resistance evidence. In order to avoid failures in the equine...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Macrolide; Minimum inhibitory concentration; Antimicrobial susceptibility; Rhodococcosis.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000400680