title: Histochemical research on metabolic pathways of glucose in some species of Mollusca Gastropoda.
abstract: The metabolic pathways of glucose were studied by histochemical reactions in some species of gastropods living in different habitats. The glycolytic pathway is histochemically indicated by positive results for glucose-6-phosphate isomerase, fructose-1,6-biphosphate aldolase, glyceraldehyde-3-phosphate dehydrogenase, and D-lactate dehydrogenase. The enzymes of the Krebs cycle gave different responses: isocitrate dehydrogenase and L-malate dehydrogenase were positive, whilst succinate dehydrogenase was constantly negative. Malate synthetase activity was also demonstrated. Despite L-glutamate dehydrogenase is undetectable, the presence of transaminase indicates the gluconeogenetic route. Phosphoglucomutase and glucose-6-phosphate phosphatase appear also positive. The metabolic meaning of our results were discussed.
mesh_terms: D000818:Animals; D004064:Digestive System / Q000166:cytology / Q000378:metabolism; D005947:Glucose / Q000378:metabolism*; D006019:Glycolysis; D006372:Helix, Snails / Q000378:metabolism; D006651:Histocytochemistry; D008974:Mollusca / Q000166:cytology / Q000378:metabolism*; D013045:Species Specificity
chemical_list: D005947:Glucose