title: [Quantitative investigations of the zonal distribution of SDH, G6Pase and malic enzyme activity in liver parenchyma (author's transl)].
abstract: In native cryostat tissue sections of adult female albino rat liver the activities of succinate dehydrogenase (E. C. 1.3.99.1), glucose-6-phosphatase (E. C. 3.1.3.9) and malic enzyme (E. C. 1.1.1.40) were histochemically demonstrated and planimetrically determined. The areas of the enzymes with a maximum activity in the periportal regions, namely SDH and G-6-Pase, were respectively 34% and 41% of the whole parenchyma. Malic enzyme showed a maximum activity in the perivenous region, which consisted of about 53% of the total parenchyma. The zonal distribution of enzyme activities is related only to the terminal vessels; in the vicinity of the preterminal vessels an irregular distribution pattern was found. The results further support the assumption of the bifunctionality of liver parenchyma.
mesh_terms: D000818:Animals; D005260:Female; D005952:Glucose-6-Phosphatase / Q000032:analysis*; D006651:Histocytochemistry; D008099:Liver / Q000201:enzymology*; D051381:Rats; D013385:Succinate Dehydrogenase / Q000032:analysis*
chemical_list: D013385:Succinate Dehydrogenase; D005952:Glucose-6-Phosphatase
vernacular_title: Quantitative Untersuchungen zur zonalen Verteliung der SDH-, G6Pase- und Malatenzym-Aktivitäten im Leberparenchym).