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1991:
Mesulam M M; Geula C; Cosgrove R; Mash D; Brimijoin S
Immunocytochemical demonstration of axonal and perikaryal acetylcholinesterase in human cerebral cortex.
Brain research 1991;
539(
2):.
The adult human neocortex contains a dense net of axons and perikarya which yield an acetylcholinesterase-rich enzymatic reaction pattern in histochemical experiments. We employed a monoclonal antibody to human acetylcholinesterase and a method for the concurrent visualization of histochemical and immunohistochemical reaction-products to explore the relationship between immunological and enzymatic markers of acetylcholinesterase. We observed that the cortical axons and perikarya with a histochemically determined acetylcholinesterase-rich enzymatic activity also contain acetylcholinesterase-like immunoreactivity. This was especially informative for the intracortical acetylcholinesterase-rich perikarya of layers III and V since these neurons require prolonged incubations for histochemical detection and since they are not conspicuous in other animal species. The availability of a reliable immunohistochemical method makes it possible to investigate the distribution of the acetylcholinesterase enzyme molecule independent of its enzymatic activity.
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