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[Liver glycogen and glucose tolerance in rats with prenatal development under hypoglycemic conditions]

I A Drzhevetskaia, L I Gubareva

    Fiziologicheskii Zhurnal SSSR Imeni I. M. Sechenova
    |August 1, 1989
    PubMed

    Insights

    Maternal insulin-induced hypoglycemia in pregnant rats altered fetal development, leading to later-life hyperglycemia and impaired carbohydrate metabolism regulation in offspring.

    Area of Science:

    • Endocrinology
    • Developmental Biology
    • Metabolic Research

    Background:

    • Maternal metabolic health during pregnancy significantly influences offspring development.
    • Understanding the long-term effects of prenatal metabolic disturbances is crucial for developmental programming.
    • Carbohydrate metabolism regulation is complex and established early in development.

    Purpose of the Study:

    • To investigate the impact of maternal insulin-induced hypoglycemia on fetal development.
    • To examine the long-term consequences on offspring carbohydrate metabolism and neuroendocrine regulation.
    • To determine the role of maternal glucose supply in normal metabolic development.

    Main Methods:

    • Pregnant rats were administered insulin (1 IU/100 g body weight) to induce maternal and fetal hypoglycemia.
    • Offspring were monitored for glycemic profiles and liver glycogen levels at different life stages (reproductive age, early aging, puberty).
    • Analysis focused on changes in hyperglycemia, hypoglycemia, and liver glycogen content.

    Main Results:

    • Insulin treatment caused significant maternal and fetal hypoglycemia.
    • Fetal livers showed increased glycogen levels post-treatment.
    • Offspring exhibited hyperglycemia and decreased liver glycogen at reproductive age and early aging.
    • Pubertal offspring displayed diabetic-like glycemic curves.

    Conclusions:

    • Prenatal exposure to hypoglycemia, induced by maternal insulin, disrupts normal offspring carbohydrate metabolism.
    • Adequate fetal glucose supply from the mother is vital for developing neuroendocrine mechanisms regulating carbohydrate metabolism.
    • These findings highlight the critical role of maternal metabolic status in programming offspring metabolic health.

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