Search for dissertations about: "virulent factor"

Showing result 1 - 5 of 22 swedish dissertations containing the words virulent factor.

  2. 1. Identification of new virulence factors in Francisella tularensis

    Author : Anna-Lena Forslund; Åke Forsberg; Elisabeth Carniel; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Francisella tularensis; regulation; virulence; Hfq; DsbA; type IV pili; membrane; Molecular biology; Molekylärbiologi; molekylärbiologi; Molecular Biology;

    Abstract : Francisella tularensis, the causative agent of tularemia, is a highly virulent bacterium with an infection dose of less than ten bacteria. The ability of a pathogen to cause infection relies on different virulence mechanisms, but in Francisella tularensis relatively few virulence factors are known. Two F. READ MORE

  4. 2. Survival strategies of the human respiratory tract pathogen Haemophilus influenzae

    Author : Teresia Hallström; Malmö Klinisk mikrobiologi; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; mycology; Mikrobiologi; bakteriologi; bacteriology; virology; Haemophilus influenzae; IgD-binding; protein structure of Hsf; Microbiology; The complement system; virologi; mykologi;

    Abstract : Haemophilus influenzae is an important respiratory tract pathogen responsible for a variety of infections in humans. Encapsulated H. influenzae belongs to one of six serotypes (a-f), of which type b is the most virulent one causing serious and sometimes life-threatening diseases (e.g. READ MORE

  5. 3. Leukocyte responses to pathogens : integrins, membrane rafts and nitric oxide

    Author : Martin Winberg Tinnerfelt; Birgitta Rasmusson; Maria Lerm; Eva Särndahl; Hans Tapper; Håkan Eriksson; Linköpings universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICINE; MEDICIN;

    Abstract : During microbial invasion, leukocytes of the innate immunity are rapidly recruited to the site of infection where they internalize (phagocytose), kill and digest the invaders. To aid this process, leukocytes express surface receptors such as Toll-like receptors, β2-integrins and Fc-receptors. READ MORE

  6. 4. Antibacterial peptides - key players in host defense at epithelial surfaces

    Author : Mette Eliasson; allergologi och palliativ medicin Lungmedicin; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; mucosa; epithelium; pharyngitis; Innate immunity; Streptococcus pyogenes; antibacterial peptides; IFN-gamma; CXCL9 MIG; chemokines;

    Abstract : Innate host defense mechanisms at epithelial surfaces are important to prevent bacterial invasion. Streptococcus pyogenes, group A streptococcus (GAS), has an affinity for epithelial cells and cause pharyngitis. During streptococcal pharyngitis, high concentrations of the chemokines CXCL9/MIG, CXCL10/IP-10, CXCL11/I-TAC were found in tonsil fluid. READ MORE

  7. 5. Helicobacter pylori and its Association with Gastric and Oesophageal Carcinomas

    Author : Henrik Simán; Internmedicin - epidemiologi; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Gastroenterologi; Gastro-enterology; Western blot; CagA; Helicobacter pylori; Gastric adenocarcinoma; Oesophageal carcinoma;

    Abstract : Helicobacter pylori is one of the most common infections in man. The infection is often acquired during childhood and usually results in a chronic life-long inflammation in the gastric mucosa. The aim of our studies was to investigate the association between H. pylori seropositivity and the development of gastric and oesophageal carcinomas. READ MORE