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  • Title: Acetylcholine release in the cat caudate nucleus measured with the choline oxidase method.
    Author: Morot-Gaudry Y, Romo R, Lesbats B, Chéramy A, Godeheu G, Glowinski J, Israël M.
    Journal: Eur J Pharmacol; 1985 Mar 26; 110(1):81-7. PubMed ID: 3891381.
    Abstract:
    A chemiluminescent assay for the estimation of acetylcholine (ACh) was used to measure ACh release in caudate nuclei (CN) of halothane-anaesthetized cats implanted with push-pull cannulae. The validity of the entire experimental approach used was shown by the fact that ACh release was calcium-dependent and was increased by depolarizing agents (potassium ions, veratridine) as well as by atropine. The effects of GABA (10(-5) M, 30 min) unilateral application into the ventralis medialis and ventralis lateralis thalamic nuclei on ACh release in both CN were then examined. This treatment, known to increase DA release bilaterally, decreased ACh release in both CN. These data further reveal the role of thalamic nuclei in the bilateral regulation of the activity of neurons identified within the basal ganglia and are discussed in the light of the well-known inhibitory influence of nigrostriatal DA neurons on striatal cholinergic neurons.
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