Circulating levels of IgG1 and IgG4 Anti-IgE antibodies and asthma severity |
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Authors: | F. Shakib J. Sihoe S. J. Smith P. Wilding M. M. Clark A. Knox |
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Affiliation: | Department of Immunology, University of Nottingham, Nottingham, UK;Respiratory Medicine Unit, Faculty of Medicine, University of Nottingham, Nottingham, UK |
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Abstract: | In this paper, we have determined the levels of IgG1 and IgG4 anti-IgE in the sera of 66 asthma patients suffering from mild ( n = 24), moderate ( n = 23), or severe ( n = 19) symptoms, and 20 nonatopic, healthy subjects. The study has revealed that although asthma patients have significantly elevated levels of IgG1 and IgG4 anti-IgE antibodies, the concentration of these autoantibodies is not related to the severity of asthma. This conclusion may be related to the known heterogeneity of autoanti-IgE antibodies in terms of their ability to trigger basophil histamine release. |
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Keywords: | allergy asthma autoantibody IgE IgG1 IgG4 |
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