Sökning: "polysaccharide antigens"

Visar resultat 1 - 5 av 17 avhandlingar innehållade orden polysaccharide antigens.

  1. 1. Structural studies of two bacterial polysaccharide antigens : synthesis and chemical modification of low molecular weight carbohydrates

    Författare :Carmen Ortega; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : The structures of two bacterial antigens, one a capsular polysaccharide from Klebsiella K66 and the other a lipopolysaccharide from Escherichia coli 0:6, have been determined, using specific degradations and spectrochemical studies. Two glycosidation methods are described. LÄS MER

  3. 2. Complement-dependent defence against bacterial infection. Studies in C2 deficiency

    Författare :Barbro Selander; immunologi och glykobiologi - MIG Avdelningen för mikrobiologi; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; antibody responses; polysaccharide antigens; vaccination; mannan-binding lectin MBL ; complement; C2 deficiency; Immunology; serology; transplantation; Immunologi; serologi;

    Sammanfattning : The complement system is critically involved in defence against bacterial infection. C2 deficiency is, apart from mannan-binding lectin (MBL) deficiency, the most common homozygous complement deficiency among Caucasians. LÄS MER

  4. 3. Structural studies of some carbohydrate containing bacterial antigens

    Författare :Bengt Lindqvist; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : The structure of three bacterial antigens from Klebsiella type 37, Streptococcus pneumoniae type 1 and Haemophilus influenzae type f has been studied. In the capsular polysaccharides from Klebsiella type 37 and Streptococcus pneumoniae type 1, new sugars were discovered. In the extracellular polysaccharide material from Aerococcus viridans var. LÄS MER

  5. 4. Structural studies of bacterial carbohydrate antigens with focus on oral commensal bacteria

    Författare :Niklas Bergström; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Streptococcus mitis; Streptococcus pneumoniae; Vibrio cholerae; polysaccharide; structure; Nuclear magnetic resonance spectroscopy NMR ; Mass spectrometry MS .;

    Sammanfattning : 90% of the total number of cells in the human body consist of the normal bacterial flora. These bacteria are mostly not harmful and, indeed, even beneficial as long as they remain physiologically outside the body, e.g., within the gastro-intestinal tract. LÄS MER

  7. 5. Structural studies of some bacterial polysaccharides and extension of a method for lipid A cleavage

    Författare :Reine Eserstam; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Serratia marcescens; Hafnia alvei; Vibrio cholerae; polysaccharide; NMR;

    Sammanfattning : The focus of the work presented in this thesis has been to study the structures of the capsular polysaccharide from Serratia marcescens O14:K12, and the O-antigen polysaccharides from Hafnia alvei strain 10457 and Vibrio cholerae serogroup 037. Nuclear magnetic resonance (NMR) spectroscopy was the primary technique employed. S. LÄS MER