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  • 1980-1984  (11)
  • 1975-1979  (7)
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  • 1
    Electronic Resource
    Electronic Resource
    Complexity of Lectin-Mediated Reactions in Bacteria-Induced Histamine Release (1984)
    Oxford, UK : Blackwell Publishing Ltd
    Allergy 39 (1984), S. 0 
    Details
    ISSN: 1398-9995
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: We have earlier suggested that bacteria-induced histamine release is caused by different mechanisms, including allergic and non-immunological mechanisms, and that the latter probably depends on lectin-mediated reactions. Two possibilities of lectin-mediated reactions were examined in this study, bacterial surface lectins bind to sugars on the basophil cell membrane leading to histamine release, and the reverse reaction where bacterial aminosugars react with lectins on the basophil cell surface. In the bacterial histamine release caused by the Staph. aureus strain Wood 46 it was possible to demonstrate a reverse reaction, but not a bacterial lectin-mediated reaction. The reaction seems to be complex, as lower concentrations of sugars might potentiate the release of histamine by binding to the target cell or bacteria, while the release is inhibited by higher concentrations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1398-9995.1984.tb01967.x
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  • 2
    Electronic Resource
    Electronic Resource
    Bacterial Histamine Release by Immunological and Non-Immunological Lectin-Mediated Reactions (1984)
    Oxford, UK : Blackwell Publishing Ltd
    Allergy 39 (1984), S. 0 
    Details
    ISSN: 1398-9995
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The mechanisms of bacteria-induced histamine release were examined in vitro in human leukocytes and rat mast cells. Three types of bacterial responders were found. In persons with IgE-bearing basophilocytes bacterial histamine release could be triggered by two different mechanisms, an IgE-dependent mechanism where removal of IgE abolished the release and a non-immunological mechanism where this was not the case. In responders with no IgE-bearing cells bacterial histamine release was caused by a non-immunological mechanism. The non-immunological mechanism was further substantiated by release in isolated mast cells from germ-free rats. These experiments suggest a direct interaction between bacteria and target cell, and experiments with multi-washed bacteria and bacteria cell wall preparations indicate the possibility of the bacteria wall interacting with the target cell. It is probable that the non-immunological mechanism depends on lectin-mediated reactions, since bacteria-induced histamine release was inhibited by lectin-binding sugars as is release caused by plant lectins.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1398-9995.1984.tb01955.x
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  • 3
    Electronic Resource
    Electronic Resource
    3H-Histamine Release from Human Leukocytes (1979)
    Oxford, UK : Blackwell Publishing Ltd
    Allergy 34 (1979), S. 0 
    Details
    ISSN: 1398-9995
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: A rapid, simple, and inexpensive method for large scale screening of patients suspected of type I allergy has been developed. The method is based on in vitro incorporation of 3H-histamine in the leukocytes of the patient, whereafter release of labelled histamine is measured after provocation of the cells with the suspected allergen. The new method was compared with the conventional basophil histamine release technique by in vitro provocation of six asthmatic patients under suspicion of type 1 allergy against animal dander, house dust, and mite, and an almost identical it-lease of histamine was observed in both assays.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1398-9995.1979.tb01707.x
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    A SIMPLIFIED METHOD FOR MEASURING BASOPHIL HISTAMINE RELEASE AND BLOCKING ANTIBODIES IN HAY FEVER PATIENTS. BASOPHIL HISTAMINE CONTENT AND CELL PRESERVATION (1977)
    Oxford, UK : Blackwell Publishing Ltd
    Allergy 32 (1977), S. 0 
    Details
    ISSN: 1398-9995
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1398-9995.1977.tb01347.x
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  • 5
    Electronic Resource
    Electronic Resource
    CYCLIC AMP AND ALLERGIC HISTAMINE RELEASE. INFLUENCE OF METHYLXANTHINES ON RAT MAST CELLS (1977)
    Oxford, UK : Blackwell Publishing Ltd
    Allergy 32 (1977), S. 0 
    Details
    ISSN: 1398-9995
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1398-9995.1977.tb01348.x
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  • 6
    Electronic Resource
    Electronic Resource
    Removal and Refixation of Surface Ig from Isolated Rat Mast Cells (1977)
    Oxford, UK : Blackwell Publishing Ltd
    Scandinavian journal of immunology 6 (1977), S. 0 
    Details
    ISSN: 1365-3083
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: This study showed that under well-defined conditions all immunoglobulins could be removed from the rat mast cell surface. Surface immunoglobulins were examined by immunofluorescence technique, and cell function by the allergic reaction to antigen as judged by histamine release. Refixation of eluted surface Ig to the mast cell was easily accomplished. Furthermore, fixation of specific surface Ig to already sensitized cells resulted in inreased cell sensitivity to antigen, whereas fixation of nonspecific surface Ig resulted in decreased sensitivity. The results indicate that removed immunoglobulins are intact, have affinity for mast cells, and are able to compete with cell-bound Ig.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3083.1977.tb00337.x
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  • 7
    Electronic Resource
    Electronic Resource
    Quantitative and Qualitative Estimations of IgE Bound to Basophil Leukocytes from Hay Fever Patients (1977)
    Oxford, UK : Blackwell Publishing Ltd
    Scandinavian journal of immunology 6 (1977), S. 0 
    Details
    ISSN: 1365-3083
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: IgE was removed from human basophils of 4 nonatopic persons and 10 hay fever patients allergic to timothy grass pollen by treating the cells with buffer to adjusted pH 4. IgE could be removed and refixed to the same cells. Refixation was demonstrated by immunofluorescence and by the ability of basophils to release histamine on exposure to timothy pollen. Removed total IgE and specific IgE directed against timothy pollen were estimated, and a linear correlation to the level of total IgE and specific IgE in serum was found. The total number of IgE molecules per basophil was calculated to be in the range of 30,000 to 300,000, and timothy-specific IgE constituted 4%-15% of the total IgE molecules on the cells. It was furthermore established that specific cell-bound IgE was linearly correlated to the pollen concentration releasing 20% of the histamine contents of the basophils. Separated IgE from sensitized and nonsensitized basophils could be bound to basophils from other patients, resulting in a change in cell sensitivity. This could be ascribed to additional binding to free cell receptors as well as to a partial replacement of bound IgE. Basophils from nonatopic persons could not be sensitized by incubation with surface IgE from atopic persons. The results indicate that acid treatment is a simple method suitable for removing IgE from basophils. This IgE is intact and can be quantitated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3083.1977.tb00338.x
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  • 8
    Electronic Resource
    Electronic Resource
    Determination of IgE-Containing Immune Complexes in Human Sera (1984)
    Oxford, UK : Blackwell Publishing Ltd
    Allergy 39 (1984), S. 0 
    Details
    ISSN: 1398-9995
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: We studied the polyethylene (PEC) precipitability of monomeric human IgE, and of human IgE artificially complexed with rabbit anti-human IgE. At conditions where precipitation of monomeric IgE did not occur, from 0.2 to 20% of the complexed IgE was precipitated. The PEG precipitability of the complexes was inversely related to the IgE/anti-IgE ratio used for preparation of the complexes. From 1.5 to 19.2% of the IgE in the redissolved precipitates could be detected by use of a two-site IgE immunoradiometric assay, the percentage being highest for complexes formed at equivalence. We conclude that exact quantitation of circulating IgE immune complexes (IC) probably is impossible by any PEC precipitation assay. However, the optimized assay was found to be useful for identification of IgE IC in sera with total IgE concentrations below 5,000 U/ml. IgE IC were found in 5/20 sera from patients with Felty's syndrome, in 5/39 sera from patients with extrinsic allergy and high levels of specific IgE, and in 1/17 sera from immunized wasp allergies. No IgE IC were found in 20 normal human sera.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1398-9995.1984.tb01958.x
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  • 9
    Electronic Resource
    Electronic Resource
    Type I Allergy to Normal Cellular Constituents in Chronic Inflammatory Bowel Disease? (1984)
    Oxford, UK : Blackwell Publishing Ltd
    Allergy 39 (1984), S. 0 
    Details
    ISSN: 1398-9995
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: The possibility of autoimmune type I reactions to cellular constituents was investigated in 22 patients with ulcerative colitis, 12 with Crohn's disease, and in 22 healthy volunteers Nuclear components and colon mucosa fragments were tested as potential antigens by the basophil histamine release technique One of 12 patients with ulcerative colitis responded to sonicated leukocyte nuclei and one of 12 patients with Crohn's disease responded to both nuclei and RNA. Increased serum levels of total IgE and antinuclear antibodies of IgE class were found in one and three of the 24 patients, respectively Histamine release caused by colon mucosa fragments was not observed in a separate study consisting of 10 ulcerative colitis patients and 10 healthy volunteers. Autoimmune type I allergy to cellular‘constituents does not seem to be of significance for chronic inflammatory bowel disease and thus could not explain the involvement of tissue mast cells and eosinophils in this condition
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1398-9995.1984.tb01929.x
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  • 10
    Electronic Resource
    Electronic Resource
    Platelet 3H-Serotonin Releasing Immune Complexes Induced by Pseudomonas aeruginosa in Cystic Fibrosis (1982)
    Oxford, UK : Blackwell Publishing Ltd
    Allergy 37 (1982), S. 0 
    Details
    ISSN: 1398-9995
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: In vitro formation of immune complexes was studied by 3H-serotonin release from human platelets by P. aeruginosa antigens in the presence of serum From 22 cystic fibrosis patients. chronically infected with mucoid P. aeruginosa (CF + P) and with a pronounced antibody response against these bacteria, and in 24 patients without P. aeruginosa (CF-P). All CF + P patients responded with 3H -serotonin release (16–34%), whereas CF-P patients released less than 15%. In the group of CF4-P patients the number of P. aeruginosa precipitins was correlated to the serotonin liter. Time courses indicated that SH-serotonin release was maximal between 2 and 5 min, and that no further release was observed up to 20 min. There was a gradual increase in 3H -serotonin release with higher platelet concentrations The response was not changed by complement inactivation. and fractionation of serum demonstrated that the serotonin release was dependent on the presence of the immuno-globulin fraction. These experiments support the suggestion of a type 111 reaction being invoked in the lung damage in CF + P patients and also suggest a possible involvement of serotonin in the inflammatory reaction during chronic P. aeruginosa lung infection.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1398-9995.1982.tb01882.x
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