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  • Title: Histochemical study on the distribution of some enzyme activities in the vagal and facial lobes of the goldfish, Carassius auratus.
    Author: Contestabile A.
    Journal: Histochemistry; 1975 Jul 30; 44(2):123-32. PubMed ID: 1141029.
    Abstract:
    The histochemical localization of six enzymic activities (acetylcholinesterase, pseudocholinesterase, monoamine oxidase, lactate dehydrogenase, succinate dehydrogenase and glucose-6-phosphate dehydrogenase) has been studied in the vagal and facial lobes of the goldfish, Carassius auratus. These encephalic centers are hypertrophic in Cyprinidae, corresponding to the dominance of gustatory function. Acetylcholinesterase shows a complex laminar distribution in the vagal lobes and a peculiar cellular localization in vagal motor neurons. Monoamine oxidase activity is mainly evident in fibrous tracts coming to or leaving from the lobes. Among oxidative enzymes examined, lactate dehydrogenase and succinate dehydrogenase exhibit distribution patterns respectively similar to those observed for acetylcholinesterase and monoamine oxidase. Some features on enzymes distribution in the gustatory centers of Carassius are in agreement with the enzymatic patterns well known in higher vertebrates.
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