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. 1984 Oct;53(2):227–234.

A basophil-activating factor from human T lymphocytes.

E J Goetzl, D W Foster, D G Payan
PMCID: PMC1454823  PMID: 6208144

Abstract

Human T lymphocytes stimulated with phytohaemagglutinin (PHA) or streptokinase-streptodornase (SK-SD) generate an activity which elicits non-cytotoxic histamine release from human basophils. Filtration of the T lymphocyte-derived activity on columns of Sephadex G-100 and Fractogel 55F sequentially revealed one predominant basophil-activating factor of mol. wt. 70,000-90,000, that was designated BAF-T. BAF-T was composed of two acidic proteins of approximate pI 4.4 and 5.2-5.5, as assessed by isoelectric focusing. The distinction of BAF-T from IgE was confirmed by the failure of BAF-T to bind to an anti-IgE affinity column and the capacity of BAF-T to release histamine maximally from basophils desensitized to IgE-dependent stimuli. The inability of BAF-T to release histamine from human lung mast cells and dog cutaneous mastocytoma cells suggests target cell specificity. The source and activity of BAF-T are consistent with a specific contribution of this mediator to human cellular immune and hypersensitivity responses involving T lymphocytes and basophils.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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