Sökning: "T-cell"

Visar resultat 6 - 10 av 1062 avhandlingar innehållade ordet T-cell.

1. 6. Recognition requirements and regulatory events directing T cell responses

   Författare :Martin Gullberg; Eva-Lotta Larsson; Umeå universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; T cell growth factor production; Lyt-2-positive T suppressor cell; Lyt-2-positive cytotoxic T lymphocytes; activation requirements of T lymphocytes; blocking of T cell functions;

   Sammanfattning : The present study has considered cellular and molecular requirements in T cell responses. The central role of T cell growth factors (TCGF) in T cell responses prompted us to study the regulatory events directing TCGF production in lectin stimulated cultures. LÄS MER

3. 7. Aspects of T cell development contributing to autoimmunity

   Författare :Maria Carlsén; Diabetes - immunovirologi; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; FTOC; T cell development; Type 1 diabetes; p53; Insulin; NOD; Negative selection; TGF-β; Tolerance; Thymus; Conditional cre lox knock out; Autoimmunity;

   Sammanfattning : Autoimmunity, such as type 1 diabetes (T1D), arises as a result of tolerance breakdown against host tissues, i.e. the β-cells. Central tolerance is established during thymic T cell development and defects in key events during this process could contribute to the pathogenesis of autoimmune diseases. LÄS MER

4. 8. 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

5. 9. Clinical factors and outcome in T-cell lymphoma: a population-based perspective

   Författare :Fredrik Ellin; Tumörmikromiljö; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; T-cell Lymphoblastic Lymphoma; peripheral T-cell lymphoma; prognostic factors; autologous stem cell transplantation; central nervous system relapse; comorbidity;

   Sammanfattning : The heterogeneous group of T-cell lymphomas consist mostly of aggressive diseasess, with generally unfavourable outcome compared to aggressive B-cell lymphomas following similar therapy. This thesis focus on outcome and risk factors for inferior survival, in an unselected population-based cohort of T-cell lymphoma patients. LÄS MER

7. 10. Regulation of CNS inflammation upon T cell interaction with CNS resident cells

   Författare :Ingrid Teige; Immunologi; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Neurology; neuropsychology; neurofysiologi; neuropsykologi; Neurologi; neurophysiology; neuron; glia; CNS; T cell; cytokine; immunoregulation; MS; EAE;

   Sammanfattning : Multiple Sclerosis (MS), is a neurologic, autoimmune disease characterized by CNS immune cell infiltration and demyelination. To experimentally study MS, we have utilized the mouse model Experimental Autoimmune Encephalomyelitis (EAE). EAE is induced through immunization with myelin antigens, which elicits an autoreactive Th1 cell response. LÄS MER