Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: EC:3.1.1.7 (acetylcholinesterase)
28,390 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

We here report observations on the distribution of acetylcholinesterase (acetylcholine hydrolase, EC 3.1.1.7) in the striatum of the adult human, the rhesus monkey, and the cat. By the histochemical staining methods of Geneser-Jensen and Blackstad and of Karnovsky and Roots, compartments of low cholinesterase activity were identified in parts of the striatum in all three species. In frontal sections, these enzyme-poor zones appeared as a variable number of weakly stained approximately 0.5-mm-wide zones embedded in a darkly stained background. The zones varied in cross-sectional shape from round to elongated and were sometimes branched. They were most prominent in the head of the caudate nucleus. Three-dimensional reconstructions of serial sections through the caudate nucleus in the human and cat suggest that over distances of at least several millimeters, the zones of low enzyme activity form nearly continuous labyrinths.
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PMID:Histochemically distinct compartments in the striatum of human, monkeys, and cat demonstrated by acetylthiocholinesterase staining. 10 1

The distribution of acetylcholinesterase (AChE) was explored in the striatum of the cat following a slightly modified Geneser-Jensen and Blackstad method. The well-known histochemical organization of the cat's striatum, characterized by the presence of small areas with poor concentration of AChE, called "striosomal bodies" or "striosomes", which were embedded in a prominent tissular matrix presenting more intense staining for AChE, was clearly recognized. An additional finding, however, was that regional variations in the deposit of AChE both in the striosomal bodies and in the matrix-compartment, occurred within different rostrocaudal and dorsoventral striatal territories of the cat's caudate nucleus. These results point to consider these two striatal compartments as part of a more complex histochemical design for the striatum of carnivores.
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PMID:Histochemical assessment upon the striatal distribution of acetylcholinesterase in the cat. 848 Oct 85