Search for dissertations about: "Ann-beth Jonsson"

Showing result 11 - 14 of 14 swedish dissertations containing the words Ann-beth Jonsson.

2. 11. Pathogenecity-associated genes modulate Escherichia coli adhesion and motility

   Author : Annika E. Sjöström; Bernt Eric Uhlin; Ann-Beth Jonsson; Umeå universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Molecular biology; Molekylärbiologi; molekylärbiologi; Molecular Biology;

   Abstract : Escherichia coli strains typical of UPEC (uropathogenic E. coli) and NBM (newborn meningitis) isolates carry chromosomally located PAIs (pathogenicity islands) that are absent in non-pathogenic E. coli strains. The PAIs include genes for virulence factors such as toxins and genes coding for specific adhesins and pili/fimbriae formation. READ MORE

4. 12. Roles of secreted bacterial factors in modulation of host cell signalling

   Author : Eric Toh; Sun Nyunt Wai; Teresa Frisan; Staffan Bohm; Ann-Beth Jonsson; Umeå universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; bacteria-host interaction; motility-associated killing factor A; outer membrane vesicles; cytolysin A; phosphatidylinositol 4-phosphate 5-kinase alpha; enhancer of zeste homologue 2; epigenetic modulation; Medical Cell Biology; medicinsk cellbiologi; mikrobiologi; Microbiology;

   Abstract : Pathogenic bacteria employ several secretion systems to release or inject virulence factors that may alter host cell processes, generate a replicative niche, and aid bacterial survival in adverse environments. This thesis presents my investigations on how bacterial factors can modulate host cell signalling mechanisms. READ MORE

5. 13. Roles of membrane vesicles in bacterial pathogenesis

   Author : Svitlana Vdovikova; Sun Nyunt Wai; Richard Lundmark; Ann-Beth Jonsson; Umeå universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Membrane vesicles; autophagy; pore-forming toxin; pore formation; Listeria monocytogenes; Vibrio cholerae; virulence factor; PrtV protease; listeriolysin O; V. cholerae cytolysin; mikrobiologi; Microbiology; molekylärbiologi; Molecular Biology;

   Abstract : The production of membranous vesicles is observed to occur among organisms from all domains of the tree of life spanning prokaryotes (bacteria, archaea) and eukaryotes (plants, animals and fungi). Bacterial release of membrane-derived vesicles (MVs) has been studied most extensively in cases of Gram-negative species and implicating their outer membrane in formation of extracellular MVs. READ MORE

6. 14. Bacteria-host cell interactions : Studies on initial colonization, antimicrobial peptides, and biofilms

   Author : Gabriela Wassing; Ann-Beth Jonsson; Elena Vikström; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Neisseria meningitidis; Lactobacillus; host responses; EGR1; antimicrobial peptides; hBD2; A20; biofilm; molekylär biovetenskap; Molecular Bioscience;

   Abstract : The obligate human pathogen Neisseria meningitidis asymptomatically colonizes the upper respiratory tract, but crossing of the epithelial barrier can cause life-threatening meningitis and/or sepsis. N. READ MORE