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- W2414984549 abstract "In an attempt to provide an alternative and safer technique of specific hyposensitization for those patients for whom the conventional treatment presents a high risk for anaphylaxis, we used a guinea pig model for extracorporeal hyposensitization. We sensitized three groups of guinea pigs with an olive pollen extract. Two of the groups were sensitized before removal of their buffy coat and the third group was sensitized after the removal of their buffy coat. The buffy coat cells were incubated with the same antigen and intracardially reinjected into their respective donors. Subsequent challenges by aerosolized antigen and intracardiac injections were performed. We did a basophil degranulation on random samples of buffy coat of tested and control animals. We skin tested the animals and we examined the histopathology of their lungs. The animals reinjected with the incubated buffy coat prior to sensitization showed a greater protection from aerosolized antigen and the onset of their anaphylactic symptoms was significantly delayed when compared with controls. The results of basophil degranulation studies showed that animals sensitized before removal of their buffy coat had approximately a threefold increase of degranulated basophils as compared with animals that were sensitized after removal of buffy coat and approximately a fourfold increase when compared with controls. This degranulation did not affect the specific skin test. Histopathologic observations did not reveal any characteristics typical of anaphylaxis." @default.
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- W2414984549 date "1987-02-01" @default.
- W2414984549 modified "2023-09-23" @default.
- W2414984549 title "An attempt to prevent anaphylaxis by aerosolized antigen in guinea pigs." @default.
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