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. 1981 Aug;78(8):5165–5169. doi: 10.1073/pnas.78.8.5165

Purification of human eosinophil-derived neurotoxin.

D T Durack, S J Ackerman, D A Loegering, G J Gleich
PMCID: PMC320359  PMID: 6946462

Abstract

Human and animal eosinophils contain a powerful neurotoxin that causes selective neuronal and axonal damage to white matter of cerebellum and spinal cord of experimental animals when injected intrathecally. This reaction is termed the "Gordon phenomenon." We purified the eosinophil-derived neurotoxin from eosinophil-rich leukocyte suspensions or eosinophil granules from four patients with various hypereosinophilic syndromes. A single protein with an average molecular weight of 18,400 was isolated by sequential chromatography on Sephadex G-50 columns and analyzed by sodium dodecyl sulfate/polyacrylamide gel electrophoresis of column fractions. The purified eosinophil-derived neurotoxin from the cells of these patients retained the potent neurotoxic activity of the crude eosinophil or eosinophil granule extracts in experimental animals. These animals developed the syndrome of stiffness and ataxia progressing to severe paralysis characteristic of the Gordon phenomenon. Histologic examination of the brains of animals injected with purified eosinophil-derived neurotoxin confirmed the characteristic widespread loss of Purkinje cells and severe spongiform vacuolation in the white matter of cerebellum, brain stem, and spinal cord. We have established the location of eosinophil-derived neurotoxin in the eosinophil granule and have shown that it is distinct from several other eosinophil proteins, the granule major basic protein, and the Charcot-Leyden crystal protein (lysophospholipase).

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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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