نتایج جستجو برای: specific agr groups

تعداد نتایج: 1690487  

Journal: :زبان شناسی و گویش های خراسان 0

extended abstract 1. introduction mazinan, a village and the center of a rural district, is a subdivision of sabzevar city located in the eastern part of razavi-khorasan province. the fact that this village has been mentioned and described as a cultivated town in hodud al-alam men al-mašriq ila l-maqrib (see sotudeh, 1983) written in the10th century a.d. indicates that mazinan is at least15 cen...

2014
Erin K. Sully Natalia Malachowa Bradley O. Elmore Susan M. Alexander Jon K. Femling Brian M. Gray Frank R. DeLeo Michael Otto Ambrose L. Cheung Bruce S. Edwards Larry A. Sklar Alexander R. Horswill Pamela R. Hall Hattie D. Gresham

Bacterial signaling systems are prime drug targets for combating the global health threat of antibiotic resistant bacterial infections including those caused by Staphylococcus aureus. S. aureus is the primary cause of acute bacterial skin and soft tissue infections (SSTIs) and the quorum sensing operon agr is causally associated with these. Whether efficacious chemical inhibitors of agr signali...

Journal: :The Journal of experimental biology 1999
Versen Gokorsch Fiedler Schipp

Pharmacological examinations of isolated auricles from Sepia officinalis were carried out to analyze the putative role of the monoaminergic transmitter/receptor system in the control of auricle function. In conjunction with histofluorescence studies and HPLC analyses, evidence of a double excitatory serotonergic and noradrenergic innervation of the auricles was obtained. Serotonin-induced posit...

Suppose $G$ is a finite group, $A$ and $B$ are conjugacy classes of $G$ and $eta(AB)$ denotes the number of conjugacy classes contained in $AB$. The set of all $eta(AB)$ such that $A, B$ run over conjugacy classes of $G$ is denoted by $eta(G)$.The aim of this paper is to compute $eta(G)$, $G in { D_{2n}, T_{4n}, U_{6n}, V_{8n}, SD_{8n}}$ or $G$ is a decomposable group of order $2pq$, a group of...

Journal: :Applied and environmental microbiology 2010
Jonathan Baker Sutthirat Sitthisak Mrittika Sengupta Miranda Johnson R K Jayaswal Julie A Morrissey

Copper is an important cofactor for many enzymes; however, high levels of copper are toxic. Therefore, bacteria must ensure there is sufficient copper for use as a cofactor but, more importantly, must limit free intracellular levels to prevent toxicity. In this study, we have used DNA microarray to identify Staphylococcus aureus copper-responsive genes. Transcriptional profiling of S. aureus SH...

2016
Auttawit Sirichoat Sujintana Wongthong Ratdawan Kanyota Ratree Tavichakorntrakool Aroonwadee Chanawong Jariya Umka Welbat Aroonlug Lulitanond

BACKGROUND Staphylococcus aureus, with reduced vancomycin susceptibility, is probably under the regulation of several genes and various express phenotypes. OBJECTIVES This study aimed to investigate the phenotypic differences between vancomycin-susceptible S. aureus (VSSA), vancomycin-intermediate S. aureus (VISA), and heterogeneous VISA (hVISA) isolates. MATERIALS AND METHODS A total of 13...

Journal: :Journal of medical microbiology 2015
Dalèle Elhani Haythem Gharsa Dhia Kalai Carmen Lozano Paula Gómez Jemli Boutheina Mahjoub Aouni Farouk Barguellil Carmen Torres Karim Ben Slama

Tetracycline resistance has been postulated as a potential phenotypic marker of livestock-associated lineage ST398 amongst meticillin-resistant Staphylococcus aureus (MRSA) clinical isolates in some European hospitals. The objective of this study was to determine if this marker could also be applied to Maghrebian countries. In total, 99 MRSA isolates were collected in a Tunisian hospital during...

Journal: :Infection and immunity 2005
Candice Rigoulay José M Entenza David Halpern Eleonora Widmer Philippe Moreillon Isabelle Poquet Alexandra Gruss

The HtrA surface protease is involved in the virulence of many pathogens, mainly by its role in stress resistance and bacterial survival. Staphylococcus aureus encodes two putative HtrA-like proteases, referred to as HtrA(1) and HtrA(2). To investigate the roles of HtrA proteins in S. aureus, we constructed htrA(1), htrA(2), and htrA(1) htrA(2) insertion mutants in two genetically different vir...

Journal: :Journal of innate immunity 2012
Dorothee Kretschmer Nele Nikola Manuela Dürr Michael Otto Andreas Peschel

The Agr quorum-sensing system represents the master regulator for staphylococcal virulence factors and is known to have a strong impact on the release of pathogen-associated molecular pattern (PAMP) molecules. Among the various staphylococcal PAMPs, phenol-soluble modulin (PSM) peptides have attracted increasing interest because they are crucial for staphylococcal virulence and have neutrophil-...

2017
Viviane Figueira Marques Cássia Couto da Motta Bianca da Silva Soares Dayanne Araújo de Melo Shana de Mattos de Oliveira Coelho Irene da Silva Coelho Helene Santos Barbosa Miliane Moreira Soares de Souza

Staphylococcus spp. play an important role in the etiology of bovine mastitis. Staphylococcus aureus is considered the most relevant species due to the production of virulence factors such as slime, which is required for biofilm formation. This study aimed to evaluate biofilm production and its possible relation to beta-lactamic resistance in 20 S. aureus isolates from bovine mastitic milk. The...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید