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 145 for “"Campylobacter"”.
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Metabolic pathways of Campylobacter fetus
The energy metabolism of three strains of Camplyobacter fetus (i.e., C. fetus ss. fetus 482, C. fetus ss. intestinalis PB1, and C. fetus ss. jejuni H840) was investigated. A biphasic culture technique was employed to grow the culture, and from which crude cellular extracts were prepared. The growth …
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Niche-adaptive evolution in Campylobacter jejuni
Campylobacter jejuni is the leading causative agent of human bacterial gastroenteritis. Human C. jejuni infection (campylobacteriosis) is frequently associated with poultry; through consumption of undercooked products, cross contamination from raw meats, or through direct contact with birds or …
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A taxonomic study of the genus Campylobacter
One hundred and eighteen (118) Campylobacter strains were studied by DNA homology experiments and characterized phenotypically. These strains formed eleven (11) distinct DNA homology groups (species) corresponding to C. fetus, C. "hyointestinalis", C. jejuni, C. coli, C. laridis, C. nitrofigilis, …
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Airborne Campylobacter in a Poultry Processing Plant
Campylobacter is a foodborne pathogen commonly found in live poultry and raw poultry products. Identifying areas of contamination or modes of transmission during commercial processing can lead to strategies to reduce the level of Campylobacter on finished products. Monitoring levels of airborne …
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A molecular biological study on Campylobacter pylori
C. pylori have been shown to be associated with gastritis and peptic ulceration, but the mechanism of their pathogenicity is unknown. Since a number of virulence factors are known to be plasmid mediated, it was decided to study the plasmids of C. pylori. A variety of techniques were used to …
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Molecular identification and typing of campylobacter concisus
Bibliography: leaves 103-118.
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A phylogenetic study of the genus Campylobacter
The relationships of the fourteen (14) species of Campylobacter were derived by comparison of the partial 16S ribosomal RNA sequences determined using reverse transcriptase and oligonucleotide primers specific for regions in the 16S rRNA molecule. These species formed three distinct RNA sequence …
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Genome sequence of the hyperinvasive Campylobacter jejuni strains
Campylobacter jejuni is the world’s major cause of gastroenteritis in humans. Although motility, toxin production, adhesion and invasion are some of the key factors associated with C. jejuni pathogenesis, their mechanism in the disease process remains unclear. The key aim of this project is to …
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Prevalence of Campylobacter in a turkey production facility
… throughout production for the presence of Campylobacter using Campy-Cefex agar incubated at 42°C under microaerophilic conditions (85% N2, 10% CO2, and 5% O2). Peak colonization occurred near 3 weeks of production. Frequency of Campylobacter isolation from bird sources paralleled …
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Isolation, growth and epidemiology of campylobacter jejuni / coli
… metabisulphite (0.05%) gave slightly fewer Campylobacter isolations than the SEES when evaluated with various types of specimens and was also less selective. Maximum isolation rates were achieved by incubating broths at 42 0C and subculturing after 24h and 42h. Growth studies of three …
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The coaggregative abilities of lactobacilli and Campylobacter jejuni
Campylobacter jejuni is a pathogen commonly found in poultry that is one of the main bacterial causes of foodborne diarrheal disease in humans. The aim of this study was to analyze the coaggregative abilities of lactic acid bacteria and C. jejuni as a means to reduce the colonization of C. jejuni …
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Evaluating Campylobacter spp at the human-wildlife interface
Campylobacter spp. infections are an increasing global concern responsible for a significant burden of disease every year. Wildlife and domestic animals are considered important reservoirs, but little is known about host-factors driving pathogen infection dynamics in wild mammal populations. In …
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Hyperinvasiveness in the major food-borne pathogen Campylobacter jejuni
Campylobacter jejuni is a common cause of human gastrointestinal infections. Invasion of host epithelial cells is believed to be an important virulence Mechanism of this bacterium. C. jejuni strains vary in their ability to invade the human epithelial cells and some of the strains are …
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Butyrate Sensing by Campylobacter jejuni Impacts Bacterial-Host Interactions
… regions of the host intestines. Indeed, Campylobacter jejuni, a commensal bacterium of the lower intestinal tract of avian species and a leading cause of bacterial diarrheal disease in humans, recognizes intestinal niches that support growth by sensing molecular cues produced by the …
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Signalling Molecule Production by Escherichia coli and Campylobacter jejuni
… and laboratory isolates of Escherichia coli and Campylobacter jejuni has been investigated in this study. Laboratory, blood and urine E.coli isolates were analysed via three reporter strain bioassays for putative AHL production. The initial results indicated that the E.coli blood isolates …
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Campylobacter jejuni infection versus contamination of turkeys and chickens
… was conducted to determine the extent in which Campylobacter jejuni colonized live birds would survive evisceration and contaminate the processed carcasses. Birds were infected with a marker strain of Campylobacter jejuni and allowed to grow to market age. Cloacal and fecal samples were analyzed …
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Analysis of Campylobacter jejuni, Campylobacter coli, Salmonella, Klebsiella pneumoniae, and Escherichia coli 0157:H7 in fresh hand picked blue crab (Callinectes sapidus) meat
… was conducted to determine the quantities of Campylobacter jejuni, Campylobacter coli, Salmonella, fecal positive Klebsiella pneumoniae, and Escherichia coli 0157:H7 in fresh hand picked blue crab (Callinectes sapidus) meat. An attempt was made to correlate these selected pathogens and general …
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Signals and Sensory Mechanisms that Impact Campylobacter jejuni-Host Interactions
Campylobacter jejuni is a leading cause of bacterial diarrheal disease worldwide and a frequent commensal organism of the intestinal tract of poultry and other agriculturally-important animals. Upon infection of the avian host, C. jejuni likely responds to external stimuli present within the …
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Characterisation of the lipooligosaccharide biosynthesis gene cluster in campylobacter species
… system; with 8 classes (I-VIII) for Campylobacter coli (C. coli) LOS region and four groups (1-4) with 23 classes (A-W) for Campylobacter jejuni (C. jejuni) LOS region. The aim of this work was to characterise the C. jejuni and C. coli LOS biosynthesis loci with special emphasis on …
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Lactobacillus strategies to reduce Campylobacter jejuni colonization of broiler chickens
Campylobacter jejuni is one of the leading causes of foodborne bacterial illness in the world. The majority of cases of campylobacteriosis are associated with the consumption of raw or undercooked poultry meat or their cross-contamination with other food products. Strategies to reduce the presence …
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