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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Diabetologia 24 (1983), S. 202-206 
    ISSN: 1432-0428
    Keywords: Phosphatidyl glycerol ; diabetic pregnancy ; fetal lung ; rat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The lungs of fetuses of streptozotocin-diabetic rats were examined for their ability to incorporate U-14C-glucose into phosphatidyl choline, phosphatidyl glycerol, phosphatidyl inositol and lysophosphatidyl choline. In the lungs of control rats an increased biosynthesis of phosphatidyl glycerol in late pregnancy suggested a close association between the production of this phospholipid and the terminal maturation of the fetal lung. In the offspring of diabetic rats the incorporation of 14C-glucose into phosphatidyl choline, lysophosphatidyl choline and phosphatidyl glycerol was markedly decreased compared with the control rats on gestational day 20, whereas no difference was seen at day 22. Insulin treatment of the pregnant rats restored the biosynthesis of phosphatidyl choline and lysophosphatidyl choline towards normal on gestational day 20, while the ratio of phosphatidyl glycerol to phosphatidyl inositol incorporation of 14C-glucose was decreased, suggesting that the biosynthesis of phosphatidyl glycerol is more sensitive than that of phosphatidyl choline and lysophosphatidyl choline to the metabolic disturbances inherent in maternal diabetes. The delayed fetal pulmonary maturation occurred without fetal hyperinsulinism which suggests that this latter feature may not be of crucial significance in the aetiology of the respiratory distress syndrome.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Diabetologia 6 (1970), S. 526-528 
    ISSN: 1432-0428
    Keywords: Hyperglycaemic syndrome of mice (NZO, obob) ; β-oxidation of fatty acids ; β-hydroxyacyl-CoA dehydrogenase ; islets of Langerhans ; liver, heart and skeletal muscle
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé L'activité de laβ-hydroxyacyl-CoA déshydrogénase (EC 1.1.1.35.) a été mesurée, selon les principes de microtechniques de Lowry, dans les îlots et les acini pancréatiques, le foie, le muscle cardiaque et le muscle du squelette chez des souris de la souche obése de NouvelleZélande (NZO) et de la souche obése hyperglycémique (obob). L'enzyme dosé montrait la même dépendance du pH dans les îlots, le foie et le muscle cardiaque. L'activité enzymatique la plus élevée a été trouvée dans les îlots pancréatiques et le muscle cardiaque, et représentait 2 à 5 fois l'activité obtenue dans les acini pancréatiques, le foie et le muscle du squelette. Les résultats montrent qu'une condition nécessaire pour uneβ-oxydation rapide des acides gras existe dans les îlots de Langerhans.
    Abstract: Zusammenfassung Die Aktivität derβ-Hydroxyacyl-CoA Dehydrogenase (EC 1.1.1.35.) wurde nach den Prinzipien der Lowry-Mikrotechniken in den Pankreasinseln und -Acini, der Leber, dem Herzen und dem Skeletmuskel von Mäusen des fettsüchtigen New Zealand-Stammes (NZO) und in dem fettsüchtig-hyperglykämischen Stamm (obob) gemessen. Das untersuchte Enzym zeigte die gleiche pH-Abhängigkeit in Material aus den Inseln der Leber und dem Herzmuskel. Die höchste Enzymaktivität fand sich in Pankreasinseln und Herzmuskel; sie war zwei bis fünfmal höher als in den Pankreas-Azini, der Leber und der Skeletmuskulatur. Die Ergebnisse zeigen, daß eine Voraussetzung für eine schnelleβ-Oxydation von Fettsäuren in den Langerhans'schen Inseln erfüllt ist.
    Notes: Summary The activity ofβ-hydroxyacyl-CoA dehydrogenase (EC 1.1.1.35.) was measured according to the principles of the Lowry microtechniques in pancreatic islets and acini, liver, heart and skeletal muscle in mice of the New Zealand obese strain (NZO) and the obese hyperglycaemic strain (obob). The assayed enzyme showed the same pH dependence in material from islets, liver and heart muscle. The highest enzymatic activity was found in pancreatic islets and heart muscle, and this was 2 to 5 times the activity obtained in pancreatic acini, liver and skeletal muscle. The results show that one prerequisite for a fastβ-oxidation of fatty acids exists in the islets of Langerhans.
    Type of Medium: Electronic Resource
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