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- W1998023796 abstract "The use of a microdissection technique and of a very sensitive radioisotopic assay for choline acetyltransferase, the enzyme that synthesizes acetylcholine, showed that the distribution of this enzyme in the feline red nucleus is uneven. Thus, the enzyme content progressively increased in the caudo-rostral direction, the level at the rostral aspect being about twice that at the caudal. Choline acetyltransferase activity in the cat red nucleus was examined after chronic lesions of the cerebellum. Lesions in the area of the dentate and interpositus nuclei were followed by a decrease in enzyme activity in the contralateral red nucleus, whereas no change was seen on the ipsilateral side. Since this enzyme is a very specific marker for cholinergic neurons, the decrease in enzyme activity caused by the lesions suggests the existence of a cholinergic cerebellorubral pathway. This is supported by the finding that the topographical effects on choline acetyltransferase activity in the red nucleus produced by selective lesions of either the dentate or the interpositus nucleus reflected the arrangement of the cerebellorubral pathways. Choline acetyltransferase activity also decreased in the nucleus ventralis lateralis and the nucleus ventralis anterior of the thalamus contralateral to the lesions. Since cerebello-rubral fibres are thought to be collaterals of cerebello-thalamic axons, at least in the case of these originating in the interpositus nucleus, this would indicate the presence of cholinergic fibres in the brachium conjunctivum (or superior cerebellar peduncle). The results are not in complete agreement with some of the previously reported pharmacological studies; this is discussed." @default.
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- W1998023796 date "1981-08-01" @default.
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- W1998023796 title "Decrease in choline acetyltransferase activity in the red nucleus of the cat after cerebellar lesion" @default.
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- W1998023796 doi "https://doi.org/10.1016/0306-4522(81)90229-3" @default.
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