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 15 of 15 for “"Multi-locus sequence typing"”.
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The identification and characterization of a clinical isolate of a methicillin susceptible Staphylococcus aureus ST612
… S. aureus (MSSA) isolates with the same sequence type (ST) were present in hospitals in this city. Nineteen MSSA isolates, collected during the same period, and from four of the hospitals in Cape Town, as the previously characterized MRSA isolates, were screened for the presence of …
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Epidemiology and population structure of Xylella fastidiosa, the causal agent of bacterial leaf scorch, among urban trees in the District of Columbia
… Q. rubra, U. americana, and P. occidentalis. A multi-locus sequence typing analysis using 10 housekeeping loci for X. fastidiosa revealed five clonal strains among the urban trees. These strains were host specific, with only one clone being associated with members of the red oak family, American …
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Unraveling the genetic determinants of virulence in Cryptococcus neoformans
… outcomes. Isolates are further divided into sequence types (STs), based on an accepted multi-locus sequence typing scheme. In the last decade, several studies have linked ST to patient outcome, with some STs found to be more virulent than others. When genetically matched mice were infected …
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A citywide, clonal outbreak of Pseudomonas aeruginosa during a drought
… cases were mapped. Whole genome sequencing and multi-locus sequence typing were used to determine clonality and identify virulence genes. A modified case-control study in a subset of patients with bloodstream infection compared demographic and clinical characteristics between sequence types. …
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To study the fitness of Bacillus thuringiensis to survive in natural and artificial, terrestrial ecosystems
The present work is the first report of the Multi Locus sequence typing (MLST) of the B. thuringiensis strains isolated from the phylloplane of the clover leaf. A clonal population structure was indicated, although greater variation in sequence types (STs) was discovered in previous collections of …
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From field to fermentation: characterisation and application of non-dairy cultures in dairy foods
… not correlate with their observed phenotypes. Multi-locus sequence typing (MLST) and average nucleotide identity (ANI) highlighted the genetic diversity of lactis and cremoris subspecies. The application of these non-dairy lactococci to cheese production was also assessed. In milk, non-dairy …
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The role of international ‘high-risk clones’ in the emergence of metallo-b-lactamase-producing pseudomonas aeruginosa in the UK
… identified amongst these isolates using nine-locus variable number tandem-repeat (VNTR) analysis, but the majority (85%) belonged to six major complexes, corresponding to sequence types (STs) 111, 233, 235, 357,654/964 and 773, respectively, by multi-locus sequence typing (MLST). These are …
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Characterization of antimicrobial resistance among canine urinary isolates in Western Canada
… epidemiological relationships were assessed by multi-locus sequence typing (MLST). Results: A substantial majority of isolates were susceptible to all antimicrobials tested. There was no significant increase in the frequency of resistance to any of the tested agents during the study period. …
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The Effect of Antibiotics on Toxin Gene Expression in PVL-positive Staphylococcus aureus Strains
… 10 clinical isolates of S. aureus from the UK by Multi Locus Sequence Typing (MLST) and determining their PVL-type variants. In addition to that, to study the effect of several antibiotics at sub inhibitory concentrations on a number of virulence factors at mRNA using quantitative PCR and protein …
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Investigating the effect of Staphylococcus epidermidis on the growth dynamics of Staphylococcus aureus in atopic dermatitis
… other potential effector molecules. Lastly, sequence types (ST) and clonal complexes (CC) of S. epidermidis and S. aureus isolates were inferred from multi-locus sequence typing profiling. Results: Pairs of S. aureus and S. epidermidis from 75% (6/8) of controls and 65% (13/20) of cases …
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Investigating the effect of Staphylococcus epidermidis on the growth dynamics of Staphylococcus aureus in atopic dermatitis
… other potential effector molecules. Lastly, sequence types (ST) and clonal complexes (CC) of S. epidermidis and S. aureus isolates were inferred from multi-locus sequence typing profiling. Results: Pairs of S. aureus and S. epidermidis from 75% (6/8) of controls and 65% (13/20) of cases …
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Fusarium in winter wheat: mycotoxin accumulation in straw and a survey of roots
… using TEF 1-α primers specific for Fusarium, and sequences were verified using the Fusarium Multi-Locus Sequence Typing (MLST) database. The primary species associated with winter wheat roots was F. acuminatum, followed by F. graminearum, F. sporotrichoides, and isolates from the F. …
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Epidemiology of Toxoplasma gondii in the pig industry of Yucatan, Mexico
… blood of these pigs (n=632). Furthermore, MLST (Multi-Locus Sequence Typing) of four alleles (SAG1, SAG2, SAG3 and GRA6) allowed, for first time in Yucatan, genetic diversity to be assessed.Data revealed the presence of high genetic diversity among T. gondii strains of this geographical area with …
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Sexually transmitted infections, bacterial vaginosis and genital inflammation as risk factors of HIV acquisition in adolescent girls and young women in South Africa
… and STIs. Approach: To address these aims, the multi-center Women's Initiative in Sexual Health (WISH) study was conducted as a longitudinal observational trial that included HIV-negative, South African AGYW between the ages of 16-22 (EDCTP Strategic Primer 2013-2015), of which 149 from …
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The Spatial and Molecular Epidemiology of Lyme Disease in Eastern Ontario
… and Anaplasma phagocytophilum were detected at multiple sites surveyed for ticks between 2017-2021. Overall, this thesis identify patterns in Lyme disease emergence (and potentially other tick-borne illnesses), defines environmental risk areas for Lyme disease in Ontario, and highlights …