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 19 of 19 for “"oral bacteria"”.
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The Effects of Certain Oral Bacteria on the In Vitro Growth of Bacteroides gingivalis
… cocci and bacilli, which are indigenous to the oral cavity, on the in vitro growth of <em>Bacteroides gingivalis</em> was examined in this study. A pure culture of <em>B. gingivalis</em> is was obtained from the American Type Culture Collection. The nine oral test organisms were …
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Investigation of plasmaion vapor deposition (IVD) hybrid coatings for corrosion protection and plasma destruction of oral bacteria
… non-thermal plasmas for destruction of oral bacteria. The objective of investigating plasma coatings for protection of IVD coated high strength steel is to reduce damage from corrosion and prevent its hydrogen re-embrittlement that often occurs in aircraft. In this study, we completed …
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An in-vitro investigation to determine the neuroinflammatory response of CNS cells to oral bacteria and their virulence factors.
Introduction: Innate immune responses are important for brain tissue injury and repair. This study tested the innate responses of the neuroblastoma (IMR32) and the astrocytoma (SGVp12) cell lines and primary mixed glial CNS cells in vitro to virulence factors from Porphyromonas gingivalis ATCC …
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The Effect of Cognitive Status and Residency On Oral Health In Patients With Dementia
<p>Poor oral health is a predictor of cognitive decline in elderly populations and has been shown to precede dementia. As cognitive decline progresses, patients are likely to move from the community into nursing facilities. We hypothesize that severity of dementia and residency type will impact the …
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DNA-DNA Checkerboard Hybridization to Identify Bacteria in Human Plaque Samples
… DNA probes to identify the presence of specific bacteria in human plaque samples is superior to the commonly used anaerobic cultural procedures. Some periodontal pathogens are either uncultivable or very difficult to grow, such as<em> Prevotella intermedia, P. nigrescens</em>, and <em>Eubacterium …
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PART I: SYNTHESIS OF PHENOLIC ANTIBACTERIALS AND NATURAL PRODUCTS PART II: RAPID ASSESSMENT OF HYDROGEN BONDING CAPACITY
1. The Gram-positive bacteria, methicillin-resistant Staphylococcus aureus (MRSA) and Gram-negative bacteria, Acinetobacter baumannii, are pathogens responsible for millions of nosocomial infections worldwide. Due to the threat of bacteria evolving resistance to antibiotics, scientists are …
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Dental biofilm formation in young children and the long term effects of fluoride varnish
… to combine data specifying the distribution of oral bacteria derived from clinical samples with in vitro observations in order to define the effects of improved behaviour and the use of fluoride varnish on the development and metabolic activity of oral biofilms. Methods: 30 children (aged …
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The systemic inflammatory response to dental plaque
Introduction: Bacteremia involving oral bacteria and the systemic inflammatory responses are mechanisms that could causally link oral and systemic diseases. Objective: To use an experimental gingivitis model (EGM) in 2 clinical studies to 1) examine the systemic inflammatory responses to dental …
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Suppression of LPS-induced cytokines/chemokines production by CXCL1 siRNA
… Lipopolysaccharide derived from gram-negative bacteria induces initiation and progression of periodontal disease via factors such as NF-κB, TNF-α, IL-1β, and CXCL1. Down -regulation of these inflammatory mediators induced by periodontal bacteria through inhibitors may result in inhibition or …
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The Role of Oral Nitrate Reducing Bacteria in Cardiovascular Health: Impacts of Diet and Exercise
This thesis investigated the important role of oral bacteria in blood pressure regulation and vascular function through the NO3--NO2--NO pathway following exercise or dietary interventions. Study 1 examined the effect of antibacterial mouthwash on the oral microbiome and nitrate metabolism in …
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Metagenomic analysis of the periodontal and peri-implant microbiome: a link between health and disease status
The oral cavity has been becoming one of the most well-studied microbiomes after the introduction of new genomic technologies, including next-generation sequencing and bioinformatic analysis. Metagenomic studies of the oral microbial community have revealed the complexities of the oral cavity, that …
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KINETICS AND PROTEOLYTIC SIGNATURES OF HISTATIN 5 DEGRADATION IN SALIVA AND GINGIVAL CREVICULAR FLUID IN PERIODONTAL HEALTH AND GINGIVITIS
… objectives guided this research: (1) identifying oral bacteria (Porphyromonas gingivalis, Aggregatibacter actinomycetemcomitans, Fusobacterium nucleatum, Streptococcus. mutans) capable of degrading histatin 5 in vitro and characterizing the resulting peptide fragments; (2) comparing histatin 5 …
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IN VITRO EFFECT OF STATINS ON STREPTOCOCCUS MUTANS, STREPTOCOCCUS SANGUIS, AND STREPTOCOCCUS SALVARIUS
… cellular metabolic pathway present in many bacteria. Hence, the aim of this study was to assess the in vitro efficacy of statins against selected strains of oral streptococci, as determined by the minimum inhibitory concentration. A second related objective is to assess the in vitro effect …
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Antimicrobial Activity of Human Leukocyte Defensin HNP-4 Against Gram-negative Bacteria
… role in helping neutrophils kill gram-negative bacteria.<br /><br />Activity of HNP-4 against gram-negative bacteria is of special interest because Aggregatibacter (Actinobacillus) actinomycetemcomitans (A.a.) and other periodontal pathogens are gram-negative. These bacteria are resistant to HNP …
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Aetiological links between oral pathogens and dementia.
… and Alzheimer’s disease (AD). Poorly managed oral hygiene together with the immunosuppressed status of demented patients appears central to this hypothesis as together they contribute not only to an increased incidence of oral infections but also to recurrent bacteraemia that can seed oral …
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Pronthocyanidin-Rich Cranberry-FractionInduced Alteration of Periodontal Pathogen Lipopolysaccharide Functions
… and prevention of urinary tract colonization by bacterial pathogens. The proanthocyanidin rich cranberry fraction has long been speculated to possess the capacity to reduce the production of inflammatory mediators by LPSstimulated macrophages and gingival fibroblasts and to inhibit host …
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Studies on the stress response in Fusobacterium nucleatum.
… environments. In common with a number of other oral bacteria, F. nucleatum has also been shown to produce intracellular polyglucose (IP) from simple sugars such as glucose, galactose and fructose. Its response and adaptation to stressful environmental conditions such as pH is unknown. The …
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Coexistence of paralogous quorum sensing systems leads to diverse network topology for coordinating competence and bacteriocin biosynthesis in cariogenic streptococci
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2024-05-01