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Synaptosomes and mitochondria from rat brain cerebral cortex: In vivo interference on some enzymatic activities by SAMe and CDP‐choline
Author(s) -
Villa R. F.,
Curti D.,
Polgatti M.,
Benzi Gianni
Publication year - 1982
Publication title -
journal of neuroscience research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.72
H-Index - 160
eISSN - 1097-4547
pISSN - 0360-4012
DOI - 10.1002/jnr.490070312
Subject(s) - choline , choline oxidase , cytochrome c oxidase , biochemistry , enzyme , acetylcholine , in vivo , mitochondrion , chemistry , cerebral cortex , choline acetyltransferase , monoamine oxidase , biology , acetylcholinesterase , pharmacology , endocrinology , microbiology and biotechnology
The interference of cytidine diphosphate choline (CDP‐choline) and of S‐adenosyl‐L‐methionine (SAMe) on several enzymatic activities related to energy transduction (citrate synthase, malate dehydrogenase, total NADH‐cytochrome c reductase, cytochrome oxidase) and cholinergic metabolism (acetylcholine esterase) was studied. These enzymatic activities were evaluated in the purified mitochondrial fraction and in the crude synaptosomal fraction of rat cerebral cortex, 30 or 60 minutes after the in vivo administration of a single dose of 40 and/or 80 and 320 mg.kg −1 by intraperitoneal injection. SAMe left the enzymatic pattern studied totally unmodified, while CDP‐choline increased the cytochrome oxidase, evaluated in the synaptosomal fraction. These findings are discussed with regard to SAMe compartmentation and CDP‐choline action.