Detection and characterization of IgE-producing cells in patients with clonorchiasis |
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Authors: | Y Yanagihara M Kiniwa K Kajiwara K Joh A Kobayashi N Watanabe |
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Affiliation: | Clinical Research Center for Allergy, National Sagamihara Hospital, Kanagawa, Japan. |
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Abstract: | The ability of peripheral B cells of patients with Clonorchis sinensis infections to secrete IgE spontaneously was investigated in vitro. The de novo synthesis of IgE was observed in unstimulated B-cell cultures of patients. There was a significant relationship between the serum IgE level and the amount of IgE spontaneously secreted by B cells. Pretreatment of patients' B cells with 10 micrograms/ml of rabbit anti-human IgE resulted in the clear suppression of spontaneous IgE synthesis without affecting the IgG synthesis. Their B cells capable of spontaneously secreting IgE were partially sensitive to irradiation with 1,000 rad. The results obtained suggest that such IgE-forming cells may be responsible for at least part of the persistent IgE formation in patients with helminthic infections as well as in those with atopic disease. |
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