Sökning: "superantigen"

Visar resultat 16 - 20 av 34 avhandlingar innehållade ordet superantigen.

1. 16. Superantigens in group A streptococcus : gene diversity and humoral immune response

   Författare :Linda Maripuu; Mari Norgren; Susan Hollingshead; Umeå universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Group A streptococcus; Streptococcus pyogenes; superantigen SAg ; SAg-gene profile; M-protein; emm-genotype; biomedicinsk laboratorievetenskap; biomedical laboratory science;

   Sammanfattning : Group A streptococcus (GAS) is a strictly human pathogen that causes infections ranging from asymptomatic carriage to the highly lethal streptococcal toxic shock syndrome (STSS). GAS are classified according to the sequence of the variable 5’ end of the emm-gene that encodes the surface associated M-protein. LÄS MER

3. 17. New actors in adipocyte function -Focusing on PDEs, CART and superantigen

   Författare :Elin Banke; Signaltransduktionsforskning; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

   Sammanfattning : Obesity is increasing rapidly in all parts of the world and is now considered to be a global epidemic. Obesity is a major risk factor for several health issues such as type 2 diabetes (T2D) and cardiovascular disease. LÄS MER

4. 18. Activation of murine cytotoxic cells with interelukin-2 and the bacterial superantigen staphylococcal entertoxin A

   Författare :Hans Belfrage; Lund Kirurgi; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Immunologi; transplantation; serology; Immunology; cytokine; tolerance; LAK; NK; serologi; CTL; Staphylococcal enterotoxin A; SEA; Interleukin-2; murine; deletion; anergy;

   Sammanfattning : Natural killer (NK) cells and T lymphocytes are the major effector cells that can recognize and kill tumor cells. NK cells have a constitutive cytotoxic activity and kill a wide spectrum of tumor cells while T cells recognize specific tumor antigens and need to be activated through their TCR to differentiate into cytotoxic T lymphocyte (CTL) killers or T helper cells. LÄS MER

5. 19. Regulatory mechanisms controlling T cell activity

   Författare :Anette Sundstedt; Institutionen för experimentell medicinsk vetenskap; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; transplantation; T cell superantigen anergy interleukin-2 transcription factor cytotoxicity; serology; Immunology; Immunologi; serologi;

   Sammanfattning : This thesis is based on work studying the immunoregulatory mechanisms that govern the balance between activation and inactivation of T lymphocytes. Most of the work has been carried out in an experimental system using a T cell receptor (TCR-Vb3) transgenic mouse strain to obtain a homogenous T-cell population and utilizing the properties of bacterial superantigens to induce T cell responses and unresponsiveness in vivo. LÄS MER

7. 20. Effects of mercury and fluoride on human immune cells : elucidation of mechanisms

   Författare :Annika Loftenius; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :human; mercury; fluoride; HgCl2; lymphocyte; superantigen; T-cell receptor; TCRBV dental amalgam;

   Sammanfattning : Mercury, from dental amalgam, and fluoride, administered to prevent dental caries, have been argued to cause adverse health effects. The aims of this thesis have been to examine in what manner the fluoride and mercuric ions interact with human immune cells and, in the case of mercury, if it would be possible to monitor a tentative in vivo effect by in vitro assays. LÄS MER