Abstract
Summary
Studies on the cholinesterase in white matter of human, bovine, and sheep brain indicate that there is present in ruminant white matter a butyrylcholinesterase with properties similar to enzyme in human tissue, except for its inability to hydrolyze benzoylcholine. However, the enzyme from these 2 sources gives ratios of hydrolysis for butyrylcholine: acetylcholine which are alike, and the activity is completely inhibited by eserine. Thus it would seem justifiable to attribute to the enzyme a fundamental role in nervous tissue function, if its presence in other species can be confirmed.
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