IgE receptors on human basophils. Relationship to serum IgE concentration.
نویسندگان
چکیده
منابع مشابه
IgE receptors on human basophils. Relationship to serum IgE concentration.
As reported previously, and confirmed here in 26 donors, the serum IgE level (2.6-5,500 ng/ml) correlates well (rs = 0.95, P less than 0.001) with the in vivo number of IgE molecules/basophil (6,000-600,000). The total number of IgE receptors/basophil was monitored by incubating them with an IgE-rich serum (15 microgram/ml), quantitatively stripping IgE from the cells at pH 3.7, and measuring e...
متن کاملIgE Receptors on Human Basophils RELATIONSHIP TO SERUM
M to 2.8 x 10'0/M, averaging 7.7 x 109/M. Unexpectedly, the total number of IgE receptors/basophil was closely related to the serum IgE level. (r8 = 0.92, P < 0.001). Thus, either there is genetic association between serum IgE and the number of basophil IgE receptors, or, more likely, the receptor number is modulated by the serum IgE concentration.
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The distribution of surface IgE on human basophils was studied using fluorescence microscopy and immunoferritin electronmicroscopy. Redistribution of the IgE was dose, time and temperature dependent and required divalent anti-IgE. Cells which can release histamine in vitro were indistinguishable in these respects from cells which cannot. The redistribution was unaffected by the presence or abse...
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BACKGROUND Elevated serum immunoglobulin (Ig) E is a diagnostic marker of immediate-type allergic reactions. We hypothesize that serum IgE does not necessarily reflect total body IgE because in vivo IgE can be bound to cell surface receptors such as FcepsilonRI and FcepsilonRII (CD23). The aim of this study was to analyze the relationships between levels of serum IgE, cell-bound IgE, and IgE-re...
متن کاملIgE-mediated desensitization in human basophils and mast cells.
Secretion from mast cells and basophils, two cells central to immediate hypersensitivity reactions, has characteristics that suggest the existence of intrinsic signal transduction processes that limit the extent of the cell's response. This process(es) has been termed desensitization. One goal of current research efforts is to determine the mechanisms used by mast cells and basophils to down-re...
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ژورنال
عنوان ژورنال: Journal of Clinical Investigation
سال: 1978
ISSN: 0021-9738
DOI: 10.1172/jci109103