Advanced search

Showing result 1 - 5 of 158 swedish dissertations matching the above criteria.

2. 1. Stereotyped B Cell Receptors in Chronic Lymphocytic Leukaemia : Implications for Antigen Selection in Leukemogenesis

   Author : Fiona Murray; Richard Rosenquist Brandell; Kostas Stamatopoulos; Gunilla Enblad; Gerard Tobin; Manlio Ferrarini; Uppsala universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; chronic lymphocytic leukaemia; immunoglobulin genes; somatic hypermutation; stereotyped B cell receptors; antigen selection; Molecular biology; Molekylärbiologi;

   Abstract : Biased immunoglobulin heavy variable (IGHV) gene usage and distinctive B-cell receptor (BCR) features have been reported in chronic lymphocytic leukaemia (CLL), which may reflect clonal selection by antigens during disease development. Furthermore, the IGHV gene mutation status distinguishes two clinical entities of CLL, where patients with unmutated IGHV genes have an inferior prognosis compared to those with mutated IGHV genes. READ MORE

4. 2. Regulation of B cell development by antigen receptors

   Author : Jannek Hauser; Thomas Grundström; Yuan Zhuang; Umeå universitet; []
   Keywords : calcium; calmodulin; e-proteins; E2A; B cell development; antigen receptor signaling; surrogate light chains; RAG; allelic exclusion; V D J recombination; AID; negative feedback regulation; plasma cell differentiation;

   Abstract : The developmental processes of lymphopoiesis generate mature B lymphocytes from hematopoietic stem cells through increasingly restricted intermediates. Networks of transcription factors regulate these cell fate choices and are composed of both ubiquitously expressed and B lineage-specific factors. READ MORE

5. 3. Modulation of B cell access to antigen by passively administered antibodies : an explanation for antibody feedback regulation?

   Author : Hui Xu; Birgitta Heyman; Helena Harris; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; IgG; IgG3; IgE; suppression; enhancement; epitope masking; antigen transport; antigen presentation; follicular B cells; marginal zone B cells; Immunologi; Immunology;

   Abstract : Antibody responses can be up- or down-regulated by passive administration of specific antibody together with antigen. Depending on the structure of the antigen and the antibody isotype, responses can be completely suppressed or enhanced up to a 1000-fold of what is seen in animals immunized with antigen alone. READ MORE

6. 4. Function and Regulation of B-cell Subsets in Experimental Autoimmune Arthritis

   Author : Anna-Karin E. Palm; Sandra Kleinau; Susanna Cardell; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; B cells; marginal zone; autoimmune arthritis; spleen; lymph node; antigen presentation; Fc gamma receptor IIb; complement receptors 1 and 2; mast cells; Biologi med inriktning mot molekylär immunologi; Biology with specialization in Molecular Immunology;

   Abstract : B lymphocytes play a significant role in autoimmune arthritis, with their function stretching beyond autoantibody production to cytokine secretion and presentation of autoantigen. However, the involvement and activation of different B-cell subset in the autoimmune response is not fully clear. READ MORE

7. 5. Eosinophil Apoptosis

   Author : Kristina Seton; Joachim Lundahl; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Cell biology; Apoptosis; Programmed Cell Death; Survival; Eosinophils; Inflammatory Diseases; Resolution of inflammation; Functions; Flow cytometry; Cellbiologi; Cell biology; Cellbiologi; Clinical Chemistry; klinisk kemi;

   Abstract : Apoptosis or programmed cell death is crucial for the resolution of inflammation, and phagocytosis of apoptotic cells initiates the release of actively anti-inflammatory responses from the phagocytes. Eosinophils are one of the most potent inflammatory cells in the body and is involved in a number of diseases, most commonly associated with parasitic infections and allergic diseases. READ MORE