Sökning: "Costimulation"

Visar resultat 6 - 10 av 23 avhandlingar innehållade ordet Costimulation.

  1. 6. Antigen presenting cells in autoimmune diabetes: phenotype, function and modulation by Linomide

    Författare :Eva Dahlén; Lunds universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; secreting systems; Endocrinology; Linomide; costimulation; TNF-a; dendritic cells; Diabetes; macrophages; diabetology; Endokrinologi; sekretion; diabetologi; Immunology; serology; transplantation; Immunologi; serologi;

    Sammanfattning : The aim of this thesis was to better understand the role of antigen presenting cells (APC) in the development of diabetes in the nonobese diabetic (NOD) mouse. We have shown that DC and Mphi that infiltrate the islets of Langerhans produce tumour necrosis factor-a (TNF-a), a cytokine known to contribute to the pathogenesis in the early stages of diabetes development. LÄS MER

  3. 7. The ups and downs of T cells The role of costimulatory molecules in the modulation of T cell responses

    Författare :Christina Olsson; Institutionen för experimentell medicinsk vetenskap; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Immunologi; transplantation; serology; CD28; costimulation; CD152; IL-2; NF-kB; AP-1; superantigen; Immunology; T cell; serologi;

    Sammanfattning : T cell activation requires the combination of antigen in the context of MHC and costimulatory molecules to induce a functional immune response. For our studies, we primarily utilized superantigens (SAg) that bind MHC class II molecules as first signal. LÄS MER

  4. 8. Peripheral nerve reconstruction. Studies on cellular and acellular iso-, allo- and xenografts

    Författare :Martin Kvist; Malmö Institutionen för kliniska vetenskaper; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; acellular nerve graft; costimulation blockade; FK506; immunosuppression; nerve graft; nerve defect; nerve regeneration; nerve injury; nerve extraction; allograft; xenograft;

    Sammanfattning : The best results after a nerve injury with a defect are achieved by a nerve reconstruction procedure using autologous nerve grafts. However, limitations include insufficient amount of suitable donor material and donor site morbidity. The aim of the present thesis was to study alternative nerve grafts, i.e. LÄS MER

  5. 9. Modulation of Autoimmunity by Linomide treatment or interference with costimulation

    Författare :Annamaria C Tellander; Institutionen för experimentell medicinsk vetenskap; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; oncology; Cytology; collagen-induced arthritis; CD28; CD40; antigen presenting cells; Linomide; thymocytes; cancerology; Cytologi; onkologi; cancer;

    Sammanfattning : Linomide is a potent immunomodulator that has been shown to inhibit autoimmunity in several animal models of autoimmune disease. We have approached the cellular and molecular mechanism of Linomide by investigating its effect on thymocyte development and its capacity to modulate the expression of activation markers on antigen presenting cells (APCs). LÄS MER

  7. 10. T cells and costimulatory factors in myasthenia gravis

    Författare :Maria Kakoulidou; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :T cells; Myasthenia gravis MG ; costimulation; autoimmune disease; genetic polymorphism; twin;

    Sammanfattning : The autoimmune disease myasthenia gravis (MG) is characterized by muscle weakness due to a loss of acetylcholine receptors (AChR) at the neuromuscular end plate. Most MG patients have pathogenic antibodies directed against the receptor. We provide further evidence that T cells are important for establishment and continuation of the disease. LÄS MER