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  • Induction of electrophysiological and morphological changes in Sprague-Dawley rats fed tributoxyethyl phosphate.

Induction of electrophysiological and morphological changes in Sprague-Dawley rats fed tributoxyethyl phosphate.

Journal of applied toxicology : JAT (1984-02-01)
S Laham, G Long, K Schrader, J Szabo
ABSTRACT

The effects of a widely used trialkyl phosphate (TP), tributoxyethyl phosphate (TBOP), on the peripheral nervous system of Sprague-dawley (SD) rats were investigated. Male and female SD rats were administered this chemical by gavage over a period of 18 weeks (low dose: 0.25 ml kg-1; high dose: 0.50 ml kg-1). Electrophysiological changes observed at 18 weeks in all test animals included a significant reduction (P less than 0.001) in nerve conduction velocity and an important increase (P less than 0.001) of both relative (RRP) and absolute refractory period (ARP). Light and electron microscopic examination of sciatic nerve from all test animals showed the presence of degenerating myelin sheaths accompanied by axonal swelling. An advanced stage of degeneration was indicated by the presence of lamellated electron dense inclusions in unmyelinated nerve fibres.

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Sigma-Aldrich
Tris(2-butoxyethyl) phosphate, 94%