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The morphology of carbon disulfide induced peripheral neuropathy was studied in rats exposed to three concentrations of carbon disulfide by inhalation for 90 days. Rats exposed to 800 ppm developed neurofilamentous axonal swellings in the distal portions of long fibers, including the dorsal ascending sensory and corticospinal tracts of the spinal cord. In… (More)
Not all species demonstrate the same vulnerability to hydrocarbon neuropathy. These differences are related to axonal length and diameter as well as to variations in toxicokinetics. While cross-species extrapolation is made difficult by these factors, understanding the basis for the differences provides insight into pathogenesis.
These studies test the hypothesis that in n-hexane neuropathy the gamma-diketone metabolite 2,5-hexanedione (2,5-HD) results in covalent crosslinking of neurofilaments via nucleophilic attack on oxidized pyrrole rings formed from the reaction of 2,5-HD with epsilon-amino groups of lysyl residues. The 2,5-HD analogue and… (More)
Barrett's oesophagus is a preneoplastic condition in which the squamous mucosa of the oesophagus is replaced by columnar epithelium. Epithelial cells of Barrett's oesophagus were isolated from resected oesophagus specimens by two methods not previously applied to the culture of Barrett's oesophagus cells. These techniques included trypsinisation of small… (More)
Giant axonal neuropathy (GAN) is a distal sensorimotor neuropathy, characterized by neurofilamentous axonal swellings, with usual onset at 2 to 3 years of age. We report a case of congenital GAN with hypotonia at birth. At 7 months of age, nerve conduction studies showed almost complete lack of sensory and motor responses in the lower extremities. A sural… (More)