Bibliografias temáticas / Streptococcus agalactiae – Analyse cladistique

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Literatura científica selecionada sobre o tema "Streptococcus agalactiae – Analyse cladistique"

Autor: Grafiati
Publicado: 7 de outubro de 2023

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Artigos de revistas sobre o assunto "Streptococcus agalactiae – Analyse cladistique"

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Perovic, Olga, Ali A. Yahaya, Crystal Viljoen, et al. "External Quality Assessment of Bacterial Identification and Antimicrobial Susceptibility Testing in African National Public Health Laboratories, 2011–2016." Tropical Medicine and Infectious Disease 4, no. 4 (2019): 144. http://dx.doi.org/10.3390/tropicalmed4040144.

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Background: In 2002, the World Health Organization (WHO) launched a regional microbiology external quality assessment (EQA) programme for national public health laboratories in the African region, initially targeting priority epidemic-prone bacterial diseases, and later including other common bacterial pathogens. Objectives: The aim of this study was to analyse the efficacy of an EQA programme as a laboratory quality system evaluation tool. Methods: We analysed the proficiency of laboratories’ performance of bacterial identification and antimicrobial susceptibility testing (AST) for the period
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Liu, Zeliang, Xueqi Jiang, Jie Li, et al. "Molecular characteristics and antibiotic resistance mechanisms of clindamycin-resistant Streptococcus agalactiae isolates in China." Frontiers in Microbiology 14 (March 1, 2023). http://dx.doi.org/10.3389/fmicb.2023.1138039.

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Streptococcus agalactiae (Group B Streptococcus, GBS) is a major cause of neonatal infections with high morbidity and mortality, and clindamycin is the main antibiotic used to treat GBS infections in patients allergic to penicillin. We aimed to analyse the antibiotic sensitivity, sequence types, serotypes, virulence factors, and antibiotic resistance mechanisms of clinically isolated clindamycin-resistant S. agalactiae and provide basic data for the treatment, prevention, and control of clinical infection of S. agalactiae. A total of 110 strains of clindamycin-resistant S. agalactiae were coll
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Petzer, I. M., J. Karzis, J. C. Watermeyer, T. J. Van der Schans, and R. Van Reenen. "Trends in udder health and emerging mastitogenic pathogens in South African dairy herds." Journal of the South African Veterinary Association 80, no. 1 (2009). http://dx.doi.org/10.4102/jsava.v80i1.163.

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The aim of this study was to retrospectively analyse the results of milk samples obtained from South African dairy herds during the period 1996 to April 2007 in order to identify possible trends in isolates of microorganisms and their pathogenicity under field conditions. Milk samples were obtained from 7 of the 9 provinces in South Africa where there are low numbers of dairy cows. Although there is scientific limitation to a country wide survey, such as the variation in herd size, management skills, parity, milk yield, milking frequency and other parameters, the size of this database helps to
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Pino-Otín, María Rosa, Cristina Gan, Eva Terrado, María Angeles Sanz, Diego Ballestero, and Elisa Langa. "Antibiotic properties of Satureja montana L. hydrolate in bacteria and fungus of clinical interest and its impact in non-target environmental microorganisms." Scientific Reports 12, no. 1 (2022). http://dx.doi.org/10.1038/s41598-022-22419-2.

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AbstractThe aim of this study was to analyse the microbicidal and microbiostatic activity of S. montana hydrolate L., the water-soluble fraction of the hydro-distillation process used to obtain the essential oil, on 14 Gram-positive and Gram-negative bacteria and a fungus of clinical interest. To consider whether this hydrolate is a more environmentally friendly alternative to traditional antibiotics, its effect on non-target microorganisms in the aquatic and terrestrial environment was analysed using natural soil and river microorganism communities, characterized through 16S rRNA gene sequenc
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Teses / dissertações sobre o assunto "Streptococcus agalactiae – Analyse cladistique"

1

Beauruelle, Clémence. "Locus CRISPR de Streptococcus agalactiae : marqueur génétique de la phylogénie de l'espèce et de l'évolution récente des isolats." Electronic Thesis or Diss., Tours, 2019. http://www.theses.fr/2019TOUR3806.

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Nous avons étudié l’intérêt du locus CRISPR1 (associé au système CRISPR-Cas de type II-A), comme marqueur épidémiologique pour le typage et l’analyse phylogénétique des souches de Streptococcus agalactiae, le streptocoque du groupe B (SGB). Par ce travail de thèse, nous avons pu mettre en évidence i) l’activité du système CRISPR-Cas in vivo ainsi que sa faible vitesse d’évolution ii) une conservation des marqueurs ancestraux, permettant d’obtenir des informations sur les lignées phylogénétiques (congruence entre le typage CRISPR et le MLST), iii) un polymorphisme du locus CRISPR1 (notamment de
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Joubert, Laetitia. "Caractérisation de l'homéostasie et de l'impact de l'hème sur les capacités de virulence et de colonisation de bactéries à GRAM positif." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLA031/document.

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L’hème est une molécule essentielle à de nombreuses fonctions bactériennes. Cependant, cette molécule génère des radicaux libres qui lui confèrent des propriétés toxiques. Nous avons caractérisé les mécanismes de l’homéostasie de l’hème impliquant le transporteur d’efflux HrtBA. Chez L. lactis nous avons démontré que HrtBA empêche l’accumulation membranaire et intracellulaire d’hème exogène par un mécanisme ménaquinone dépendant. HrtBA est aussi présent chez de nombreux pathogènes. Chez S. agalactiae, la transcription de HrtBA est régulée par un système à deux composants HssRS. Le senseur HssS
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