Hyperosmolar Triggering of Histamine Release from Human Basophils

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RESUMO

Idiopathic reactions occurring during the infusion of hyperosmolar solutions, such as radiocontrast dyes, cause a significant number of deaths each year. These reactions are similar to those which follow mediator release during allergen-induced anaphylaxis. In attempting to explain these nonimmunologic reactions, we examined the direct effect of hyperosmolarity on normal human basophils with emphasis on release induced by mannitol.

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