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[The effect of prenatal hyper- and hypoglycemia on liver mitochondrial function and carbohydrate metabolism in rat

R N Babaeva, E S Makhmudov, A A Alimukhamedov

    Fiziologicheskii Zhurnal SSSR Imeni I. M. Sechenova
    |October 1, 1992
    PubMed

    Insights

    Prenatal hypoglycemia in rats lowered blood glucose and boosted liver glucose-6-phosphatase. Prenatal hyperglycemia minimally affected these markers, suggesting distinct impacts on glucose metabolism during development.

    Area of Science:

    • Biochemistry
    • Developmental Biology
    • Endocrinology

    Background:

    • Prenatal development is a critical period for metabolic programming.
    • Maternal glucose levels can influence fetal development and long-term health.
    • Understanding the impact of glucose dysregulation during gestation is crucial.

    Purpose of the Study:

    • To investigate the effects of prenatal hypoglycemia and hyperglycemia on glucose metabolism in developing rats.
    • To examine the specific changes in blood glucose levels and liver glucose-6-phosphatase activity.
    • To assess the impact on carbohydrate oxidation pathways.

    Main Methods:

    • Induction of controlled hypoglycemic and hyperglycemic conditions in pregnant rats.
    • Measurement of blood glucose levels in offspring.
    • Assay of hepatic glucose-6-phosphatase enzyme activity.
    • Analysis of hydrocarbonate oxidation markers.

    Main Results:

    • Prenatal hypoglycemia led to significantly decreased blood glucose levels in rat pups.
    • Hypoglycemia exposure resulted in increased glucose-6-phosphatase activity in the liver.
    • Prenatal hyperglycemia caused a rise in blood glucose but had minor effects on glucose-6-phosphatase and carbohydrate oxidation.

    Conclusions:

    • Early prenatal exposure to hypoglycemia profoundly alters glucose homeostasis in developing rats.
    • The liver's glucose-6-phosphatase system appears sensitive to prenatal hypoglycemic stress.
    • Hyperglycemia during this period has a less pronounced impact on key glucose metabolic regulators.

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