Summary
Hyperplasia of endocrine cells in the lung of the adult rat exposed to asbestos has only been characterised so far by electron microscopy as there is a lack of reliable staining techniques for their demonstration at light microscopical level. Neuron specific enolase (NSE), an isoenzyme of the glycolytic enzyme enolase has recently been shown to be present in lung endocrine cells. In this study we reveal a marked endocrine cell hyperplasia at light microscopical level in the lungs of adult rats exposed to asbestos using antibodies to NSE. Very large groups of NSE-immunoreactive cells (20–80) were only observed in the lungs of rats exposed to asbestos for 12 months. In addition smaller groups of cells (2–10) known to be present normally and to decrease with age, were rarely noted in the controls but were frequently detected in the treated rats. Immunoreactive NSE is therefore a very good marker for endocrine cell hyperplasia and thus of early neoplastic changes.
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Sheppard, M.N., Johnson, N.F., Cole, G.A. et al. Neuron specific enolase (NSE) immunostaining a useful tool for the light microscopical detection of endocrine cell hyperplasia in adult rats exposed to asbestos. Histochemistry 74, 505–513 (1982). https://doi.org/10.1007/BF00496664
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DOI: https://doi.org/10.1007/BF00496664