The high affinity transport of choline (Ch) and the synthesis of acetylcholine (ACh) were measured in synaptosomes by measuring the utilization of [2H4]Ch. The synthesis of ACh was reduced under several conditions which reduce the availability of acetyl coenzyme A (AcCoA) including no glucose added, replacement of glucose with succinate or impairment of glucose utilization by bromopyr‐uvate, NaCN, or pentobarbital. These conditions did not reduce the amount of unacetylated [2H4]Ch in the synaptosomes indicating that the high affinity transport of Ch is not directly coupled to the synthesis of ACh.
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Jope et al. (1978) studied this question.
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