Sökning: "extrathymic T cell maturation"

Hittade 5 avhandlingar innehållade orden extrathymic T cell maturation.

  1. 1. Extrathymic T cell receptor gene rearrangement in human alimentary tract

    Författare :Anna Bas; Marie-Louise Hammarström; Sten Hammarström; Adrian Hayday; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Immunology; T cell maturation; recombination activating gene; preTα; human intestinal mucosa; intraepithelial lymphocytes; lamina propria lymphocytes; nasopharyngeal tonsil; Immunologi; Immunology; Immunologi; immunologi; Immunology;

    Sammanfattning : T lymphocytes regulate the initiation, duration, and magnitude of adaptive immune responses and function as effector cells in cell mediated immunity. To become immunologically competent they must generate functional antigen receptors. This process takes place in the thymus and requires somatic recombination of T cell receptor (TCR) genes. LÄS MER

  3. 2. Human intraepithelial lymphocytes : a comparative study of phenotype, morphology, and functional properties of intraepithelial lymphocytes in gut and oral mucosa

    Författare :Carina Lundqvist; Marie-Louise Hammarström; Sten Hammarström; Per Brandtzaeg; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; human intraepithelial lymphocytes; alimentary tract; intestinal epithelium; gut luminal antigens; gingiva; γδ T cells; immunoelectron microscopy; cytokine mRNA; RT-PCR; extrathymic T cell maturation; RAG-1; periodontitis; mucosal immune system; CD4-CD8- αβ T cells; CD8 γδ T cells;

    Sammanfattning : Human intraepithelial lymphocytes (IEL) constitute a unique cell population situated in the first line of defense of the alimentary tract. Here they are continuously exposed to a massive antigenic load of high complexity. However, different conditions prevail along the alimentary tract. LÄS MER

  4. 3. Characteristics and Consequences of Thymic Involution in Inflammatory Bowel Disease. Experimental studies in G?i2-deficient and DSS-induced Colitis as well as in IBD patients

    Författare :Kristina Elgbratt; Göteborgs universitet; []
    Nyckelord :Inflammatory bowel diseaseInflammatory bowel disease; G?i2- - mice; dextran sodium sulfate; thymocytes; T cell receptor excision circles TRECs ; resent thymic emigrants;

    Sammanfattning : Characteristics and Consequences of Thymic Involution in Inflammatory Bowel Disease. Experimental studies in G?i2-deficient and DSS-induced Colitis as well as in IBD patients Kristina Elgbratt Department of Microbiology and Immunology, Institute of Biomedicine, The Sahlgrenska Academy, G?teborg University, G?teborg Sweden Inflammatory Bowel Disease (IBD) is a chronic relapsing inflammatory disorder of the gastrointestinal tract, comprising ulcerative colitis and Crohn?s disease. LÄS MER

  5. 4. Innate and adaptive immunity in childhood celiac disease

    Författare :Göte Forsberg; Marie-Louise Hammarström; Riccardo Troncone; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; immunologi; Immunology;

    Sammanfattning : Celiac disease (CD) is an inflammatory small-bowel enteropathy caused by a permanent intolerance to wheat gluten and related proteins in rye and barley. Even though the disease originate from the small intestine the clinical symptoms varies in affected individuals and are often different in small children compared to adolescents and adults. LÄS MER

  7. 5. Immune response of the small intestinal mucosa in children with celiac disease : impact of two environmental factors, resident microbiota and oats

    Författare :Veronika Sjöberg; Marie-Louise Hammarström; Olle Hernell; Katri Kaukinen; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Celiac disease; Oats; Microflora; Immune response; immunologi; Immunology;

    Sammanfattning : Celiac disease (CD) is an immune-mediated enteropathy caused by permanent intolerance to dietary gliadin in wheat gluten and related prolamines in barley and rye. The pathogenesis of CD is still unknown and several different environmental factors have been associated with CD, such as dysbiosis of the microflora. LÄS MER