Neurofibrillary changes after acute experimental lead poisoning.
Niklowitz WJ. Neurology 1975 Oct;25(10):927-34

Following acute tetraethyllead intoxication in rabbits classic neurofibrillary tangles develop. As studied by electron microscopy, such tangles develop in hydropic degenerating neurons and consist primarily of bundles of 200 A diameter smooth tubules of enormous length. In two of 16 animals a few twisted tubules (periodicity of 800 A) also could be found. The significance of these lead-induced twisted tubules, so characteristic of Alzheimer's pre-senile dementia in man, is discussed.

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