Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 40 for “"S. epidermidis"”.
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Genetic and phenotypic diversity of bloodstream associated Staphylococcus epidermidis isolates obtained from private and public hospitals in South Africa
Staphylococcus epidermidis is a commensal bacterium commonly implicated in bloodstream infections. Most S. epidermidis infections are acquired in hospitals and are associated with the use of medical devices. In contrast to its more virulent relative Staphylococcus aureus, S. epidermidis is often …
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Investigating the effect of Staphylococcus epidermidis on the growth dynamics of Staphylococcus aureus in atopic dermatitis
… in the interactions between Staphylococcus epidermidis and Staphylococcus aureus concerning growth and biofilm formation outcomes. This suggests that there might be a strain-level role played by the bacteria that affect the outcomes of their interactions, and consequently, the …
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Investigating the effect of Staphylococcus epidermidis on the growth dynamics of Staphylococcus aureus in atopic dermatitis
… in the interactions between Staphylococcus epidermidis and Staphylococcus aureus concerning growth and biofilm formation outcomes. This suggests that there might be a strain-level role played by the bacteria that affect the outcomes of their interactions, and consequently, the …
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Interaction of skin cells with skin microbiota
… wound healing. On the other hand, Staphylococcus epidermidis, as a skin commensal, has been shown to protect the skin against pathogens. Therefore, this study aims to investigate the effect of skin commensal bacteria on the skin cells and the opportunistic bacteria inhabiting the skin. The effect …
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Die Rolle des bakteriellen Insertionselements IS256 bei der Modulation der Biofilmbildung in Staphylococcus epidermdis
Staphylococcus epidermidis zählt zu den häufigsten Erregern nosokomialer Infektionen im Zusammenhang mit implantierten Fremdkörpern. Diese Bakterien zeigen eine außergewöhnliche phänotypische und genotypische Variabilität, von der auch die Expression wichtiger virulenz- und resistenzassoziierter …
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The effect of Staphylococcus epidermidis on the pH and dissolution of substitute bone graft materials
… of this study was to determine the effect of S. epidermidis 11047 on the pH and dissolution of 5 different bone substitute materials. Part 1 – Measured the pH, calcium and phosphate of the culture medium in the presence and absence of the 5 bone substitute materials before and after autoclaving. …
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Molecular investigation of the influence of environmental factors and subinhibitory antibiotic concentrations on the biofilm formation in Staphylococcus epidermidis
… is an important step in the pathogenesis of S. epidermidis polymer-associated infections and depends on the expression of the icaADBC operon leading to the synthesis of a polysaccharide intercellular adhesin (PIA). The PIA represents a sugar polymer consisting of ß-1,6 linked N-acetyl …
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Evaluating the Co-commensal Lifestyles of Staphylococcus aureus and Staphylococcus epidermidis
Staphylococcus epidermidis is a ubiquitous skin commensal, and produces a serine protease Esp that can eradicate nasal carriage of the opportunistic pathogen, Staphylococcus aureus. We evaluated the ability of S. epidermidis and S. aureus to express serine protease and compete with one another in …
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Does the human skin microbiome adapt to antibiotic exposure?
Staphylococcus epidermidis is a substantial element of the healthy human skin microflora and can become pathogenic to cause infections, for example, septicaemia and endocarditis. The effects of long-term sub-lethal exposure to antibiotics on the skin microbiota are unknown. How does antibiotic …
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Two strategies to deepen knowledge the antibiotic resistance related traits in Italian MDR Staphylococci: comparative transcriptomic of two DAP-R/DAP-S MRSA isogenic couples and CRISPR system characterization of pathogenic S. epidermidis
… mild skin forms to systemic forms, whilst S. epidermidis has been frequently implicated in endocarditis and infections of surgical implants and it seems to be the source for antibiotic resistance related gene acquisition by S. aureus. A comparative transcriptomic analysis by RNA-seq and …
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Lineage-level within-species dynamics in the human facial skin microbiome
… and delineate 4,055 genomes of C. acnes and S. epidermidis isolates from human facial skin into 167 lineages. In Chapter 3, I use these data to observe natural transmission events and assembly dynamics of the facial skin microbiome. I find that the gain and loss of individual C. acnes and S. …
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Μελέτη των μηχανισμών απόπτωσης του αμφιβληστροειδούς στην ενδοφθαλμίτιδα
… ιδαίτερα ως προς τη θεραπευτική προσπέλαση. Ο S. epidermidis αποτελεί το συχνότερο υπεύθυνο μικροοργανισμό που απομονώνεται στις περιπτώσεις μετεγχειρητικής ενδοφθαλμίτιδας. Σκοπός της μελέτης είναι η διερεύνηση της έκφρασης των προφλεγμονωδών κυτταροκινών TNF-α, IL-1β και IFN-γ, καθώς και του …
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Epidemiologische und molekulare Untersuchungen zur Biofilmbildung in Staphylococcus epidermidis und Staphylococcus aureus
Staphylococcus aureus und Staphylococcus epidermidis gehören zu den häufigsten Erregern nosokomialer Infektionen bei immunsupprimierten Patienten. Gleichzeitig bilden diese Bakterien einen wesentlichen Teil der gesunden Hautflora des Menschen. Bisher ist wenig darüber bekannt, ob es Unterschiede in …
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Prevention of bacterial growth in platelet products via inclusion of iron chelators
… we first assessed growth of Staphylococcus epidermidis in culture medium after treatment with the iron chelators deferoxamine (DFO) or phytic acid. DFO significantly inhibited bacterial growth in a dose dependent manner (p < 0.009). Conversely, phytate only inhibited bacterial growth at …
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A Novel Antibiofilm Treatment for Surgical Site Infections
… aureus (S. aureus) and Staphylococcus epidermidis (S. epidermidis). Prophylaxis and treatment of SSIs with antibiotics frequently fail due to increased antibiotic-resistance of bacteria and their ability to reside as clusters within a matrix. This form of life is called a biofilm and …
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Resistome, virulome and mobilome of nasal staphylococci from healthy humans and animals: A One Health approach with public health implications
… S. pseudintermedius (32,4%) en perros y S. epidermidis (87,7%) en humanos sanos. En relación con la detección de resistencia a meticilina y las líneas genéticas identificadas en las cepas de estafilococos coagulasa positivos (SCoP), la mayoría de los S. aureus de cerdos (60 %, CC398), …
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Διερεύνηση λοιμώξεων από πηκτάση-αρνητικά στελέχη του γένους Staphylococcus σε ασθενείς με προσθετικά υλικά
… Συνολικά μελετήθηκαν 168 Staphylococcus epidermidis και 58 S. haemolyticus από βακτηριαιμίες (BSIs, 100 στελέχη) και εντοπισμένες λοιμώξεις σχετιζόμενες με την εφαρμογή προσθετικών υλικών (PDAIs, 126 στελέχη) από ασθενείς του Πανεπιστημιακού Γενικού Νοσοκομείου Πατρών (ΠΓΝΠ) και του …
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A Study of Slime-Positive Coagulase-Negative Staphylococci
… the bacterial cell and concentration of it. S. epidermidis was determined in a virulence study to be avirulent to Swiss webster mice with no implanted medical device. Humoral immunity to CNS slime was studied and it was found that New Zealand white rabbits were unable to mount an antibody …
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Next generation of electrospun textiles for chemical and biological protection and air filtration
… killed representative bacteria of E. coli and S. epidermidis not only through a gradual release of unbound CHX from the fibers but also via contact with CHX bound to the fibers. In addition, antibacterial fiber mats were obtained by a post-spin treatment of cellulose acetate fibers. The latter …
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Preparation and Biocompatibility of Electrospun Zwitterionic Poly(Sulfobetaine Methacrylate) for Wound Dressing Applications
… Gram negative P. aeruginosa and Gram positive S. epidermidis showed that the PSBMA electrospun membrane was also highly resistant to bacterial adhesion. The Ag+-impregnated electrospun PSBMA membrane was shown microbicidal, against both S. epidermidis and P. aeruginosa. Such electrospun PSBMA …
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