Delayed onset of distal axonal neuropathy in primates after prolonged low-level administration of a neurotoxin

H. H. Schaumberg, Joseph C. Arezzo, P. S. Spencer

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10 Citations (Scopus)

Abstract

Short-latency somatosensory evoked potentials were recorded from surface electrodes overlying peripheral nerve, spinal cord, and cortex in 4 monkeys during prolonged intoxication with low levels of acrylamide. A fifth animal served as a longitudinal control subject. Slowing of the response across the spinal-medullary junction was a reliable sign, manifest only after prolonged exposure. Associated morphological changes were preterminal accumulation of axonal neurofilaments without synaptic disruption in the gracile nucleus. The induced alterations in the latency of short-latency somatosensory evoked potentials and in axon morphology were reversible after 7 months of recovery. The extreme delay in onset of subtle neurological dysfunction (940 days) following administration of a presumed safe level of acrylamide suggests that permissible levels of human exposure to toxins of this type should be reassessed.

Original languageEnglish (US)
Pages (from-to)576-579
Number of pages4
JournalAnnals of Neurology
Volume26
Issue number4
StatePublished - 1989

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Somatosensory Evoked Potentials
Acrylamide
Neurotoxins
Primates
Intermediate Filaments
Peripheral Nerves
Haplorhini
Axons
Spinal Cord
Electrodes

ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

Delayed onset of distal axonal neuropathy in primates after prolonged low-level administration of a neurotoxin. / Schaumberg, H. H.; Arezzo, Joseph C.; Spencer, P. S.

In: Annals of Neurology, Vol. 26, No. 4, 1989, p. 576-579.

Research output: Contribution to journalArticle

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