Abstract
The activity of acetylcholinesterase in the rat striatum increased considerably during development, while activities in the cerebellum and midbrain increased only slightly. During maturation the activity of butyrylcholinesterase increased in all the brain regions examined except in cerebellum. The percentage of acetyl-cholinesterase extractable by isotonic sucrose solution from mature striatum was much smaller than those obtained for other regions of the rat brain. For the developing striatum, the percentage of isotonic sucrose extractable activity was almost three times that for adult striatum. Density gradient centrifugation showed that the membrane-bound particulate fraction of adult rat brain was mostly composed of the 10 S form of acetylcholinesterase with little activity of 4 S form of the enzyme. However, a much higher proportion of the 4 S form was found in the isotonic sucrose soluble fraction. In contrast to the particulate fraction from adult brain, that from 6-day old rats contained a much higher proportion of the 4 S form of the enzyme. The sucrose soluble fraction from 6-day old rat brains contained in general much smaller proportion of 4 S form as compared to those from adult rat brains.
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Sung, S.C., Ruff, B.A. Molecular forms of sucrose extractable and particulate acetylcholinesterase in the developing and adult rat brain. Neurochem Res 8, 303–311 (1983). https://doi.org/10.1007/BF00965720
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DOI: https://doi.org/10.1007/BF00965720