Search for dissertations about: "Salmonella enterica"

Showing result 1 - 5 of 48 swedish dissertations containing the words Salmonella enterica.

2. 1. Formation of Thiolated Nucleosides in tRNA in Salmonella enterica serovar typhimurium

   Author : Hans Lundgren; Glenn Björk; Charles Lauhon; Umeå universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; : tRNA; modified nucleosides; thiolation; sulfur metabolism; Salmonella; Molecular biology; Molekylärbiologi;

   Abstract : The presence and synthesis of transfer RNA (tRNA) is highly conserved in all organisms and a lot of genetic material is dedicated to its synthesis. tRNA contains a large number of modified nucleosides and several diverse functions have been found but much about their function is still unknown. READ MORE

4. 2. It Takes Two to Tango : Bacterial heterogeneity and host cell features govern Salmonella infection

   Author : Viktor Ek; Mikael E. Sellin; Francisco García del Portillo; Uppsala universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Salmonella; swimming; swim pattern; targetting; virulence; invasion; host-pathogen interactions; epithelium; epithelial cells; macrophages; monocytes; monolayer; flagella; genome; genetic; barcoding; discreet-invasion; shape; morphology; antibiotics; persistence; Mikrobiologi; Microbiology;

   Abstract : Salmonella enterica serovar Typhimurium (S.Tm) causes enterocolitis with significant worldwide morbidity and mortality. The general aim of this thesis is to investigate variation in host cell invasion mechanisms used by S.Tm across different host cell contexts, as well as the influence of bacterial cell-cell heterogeneity on invasion-relevant S. READ MORE

5. 3. Genetics and Growth Regulation in Salmonella enterica

   Author : Jessica M. Bergman; Diarmaid Hughes; Dan I. Andersson; Måns Ehrenberg; Stanley Maloy; Uppsala universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; tufA; tufB; EF-Tu; ppGpp; Stringent response; RNase E; RNA turnover; Post-transcriptional regulation; rpoB; rpoS; Growth in stationary phase; Biology with specialization in Microbiology; Biologi med inriktning mot mikrobiologi; Mikrobiologi; Microbiology; Molekylär genetik; Molecular Genetics; Biology with specialization in Molecular Evolution; Biologi med inriktning mot molekylär evolution;

   Abstract : Most free-living bacteria will encounter different environments and it is therefore critical to be able to rapidly adjust to new growth conditions in order to be competitively successful. Responding to changes requires efficient gene regulation in terms of transcription, RNA stability, translation and post-translational modifications. READ MORE

6. 4. Detection and Characterisation of Salmonella in Animal Feed Samples by PCR-Based Methods

   Author : Charlotta Löfström; Teknisk mikrobiologi; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Food and drink technology; Livsmedelsteknik; Biotechnology; Bioteknik; Biokemisk teknik; Biochemical technology; Analytisk kemi; Analytical chemistry; mykologi; virologi; bakteriologi; Mikrobiologi; validation; Microbiology; bacteriology; virology; mycology; Salmonella; ribotyping; detection; animal feed; randomly amplified polymorphic DNA; pulsed-field gel electrophorsis; pre-PCR processing; PCR; polymerase chain reaction; genotyping;

   Abstract : Animal feed is a recognised source of Salmonella enterica for farm livestock and may also indirectly cause infection in people consuming foods of animal origin. It is therefore important to have rapid, reproducible and specific methods for the detection of Salmonella in feed, and for the characterisation of strains for further epidemiological investigations or to trace the source of contamination in a production facility. READ MORE

7. 5. Genetic adaptation of salmonella enterica to phagocytic cells

   Author : Sofia Eriksson; Karolinska Institutet; Karolinska Institutet; []
   Keywords : Salmonella; macrophages; host-adaptation; microarray; nitric oxide;

   Abstract : Salmonella enterica is a collection of closely related enteric bacteria that as a species is capable of infecting a wide variety of hosts. S. enterica serovar Typhimurium, (S. Typhimurium), causes a systemic disease in mice which in many aspects resembles human typhoid fever caused by S. READ MORE