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Quantitative histochemical studies of the hypothalamus enzymes of acetylcholine metabolism

PM Packman, DA Godfrey, AD Williams and FM Matschinsky

The quantitative histochemical distribution of acetylcholinesterase and choline acetyltransferase activity has been measured in individual hypothalamic nuclei and median eminence, as well as in entire hypothalamic sections by a mapping technique. There was an 18-fold range of nuclear choline acetyltransferase activity with highest activities in the lateral preoptic nucleus and median eminence. There was a nine-fold range of nuclear acetylcholinesterase activity with highest activities in the lateral preoptic and magnocellular nuclei and lowest activity in the median eminence. The substantial gradients of choline acetyltransferase activity found in the hypothalamus indicate the importance of using a technique that provides an objective, permanent record of contiguous sample locations thereby allowing detailed analysis of tissue areas using, but not dependent on, anatomical boundaries.

Volume 25, Issue 11, pp. 1237-1246, 11/01/1977
Copyright © 1977 by The Histochemical Society


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The Journal of Histochemistry & Cytochemistry is owned, published, and licensed by The Histochemical Society © 1977