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Related Experiment Videos

Ovarian effects upon maternal glucose tolerance

A Khalil1, K S Amankwah, R C Kaufmann

  • 1Department of Obstetrics and Gynecology, Southern Illinois University School of Medicine, Springfield, USA.

Gynecologic and Obstetric Investigation
|January 1, 1996
PubMed
Summary

Diabetic mouse ovaries transplanted into normal mice caused glucose intolerance during pregnancy. This suggests diabetic ovaries may contribute to gestational diabetes mellitus, with glucose levels normalizing postpartum.

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Area of Science:

  • Reproductive biology
  • Endocrinology
  • Metabolic disorders

Background:

  • Gestational diabetes mellitus (GDM) poses risks to maternal and fetal health.
  • The role of ovarian factors in GDM pathogenesis remains incompletely understood.
  • Existing research often focuses on systemic metabolic changes rather than specific organ contributions.

Purpose of the Study:

  • To investigate the direct impact of diabetic ovaries on maternal glucose metabolism during pregnancy.
  • To determine if ovarian hormones from diabetic mice can induce glucose intolerance in a normal host.
  • To elucidate potential mechanisms linking ovarian dysfunction to gestational hyperglycemia.

Main Methods:

  • Ovarian transplantation: Ovaries from diabetic (db/db) female mice were transplanted into oophorectomized normal (m/m) female mice.

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  • Control group: Normal ovaries were transplanted into oophorectomized normal (m/m) female mice.
  • Glucose tolerance tests (GTTs) were performed before surgery, post-surgery, during pregnancy, and postpartum.

    • Main Results:

    • No significant differences in glucose tolerance were observed between groups before or immediately after surgery.
    • Transplanted diabetic ovaries led to statistically significant glucose intolerance during pregnancy in the host mice.
    • Glucose tolerance returned to normal levels in the study group after delivery.

    Conclusions:

    • Ovaries from diabetic mice can induce maternal glucose intolerance during pregnancy.
    • This effect may be mediated by hormones produced by the diabetic ovaries, potentially interacting with pregnancy-specific hormonal changes.
    • Diabetic ovarian dysfunction is a potential contributing factor to the development of gestational diabetes mellitus.