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Neonatal leptin treatment reverses developmental programming.

M H Vickers1, P D Gluckman, A H Coveny

  • 1Liggins Institute, Faculty of Medical and Health Science, University of Auckland and National Research Centre for Growth and Development, Auckland 1020, New Zealand. m.vickers@auckland.ac.nz

Endocrinology
|July 16, 2005
PubMed
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Maternal undernutrition programs offspring for obesity. However, neonatal leptin treatment reversed these metabolic changes, suggesting developmental programming is reversible.

Area of Science:

  • Developmental biology
  • Metabolic disorders
  • Endocrinology

Background:

  • Adverse prenatal environments can cause long-term metabolic issues like obesity and insulin resistance.
  • These developmental programming effects were previously thought to be irreversible.
  • Offspring of undernourished pregnant rats exhibit obesity and related metabolic issues, especially with high-fat diets.

Purpose of the Study:

  • Investigate the effects of neonatal leptin treatment on the metabolic phenotype of adult female offspring from undernourished mothers.
  • Determine if early-life leptin intervention can reverse metabolic programming induced by prenatal undernutrition.

Main Methods:

  • Utilized a rat model of maternal undernutrition during pregnancy.
  • Administered recombinant rat leptin (2.5 microg/g.d) subcutaneously from postnatal days 3-13.

Related Experiment Videos

  • Assessed metabolic parameters including weight, fat mass, caloric intake, activity, and plasma glucose, insulin, and leptin levels in adult female offspring.

    • Main Results:

    • Neonatal leptin treatment caused transient weight gain reduction in programmed offspring.
    • Adult programmed offspring treated neonatally with leptin showed normalized caloric intake, activity, body weight, fat mass, and fasting glucose, insulin, and leptin levels.
    • Leptin treatment had no effect on adult offspring of normally fed mothers.

    Conclusions:

    • Developmental metabolic programming induced by prenatal undernutrition is potentially reversible.
    • Neonatal leptin intervention during a critical developmental window can normalize the programmed metabolic phenotype in adulthood.
    • Leptin administration may reverse prenatal adaptations caused by fetal undernutrition, offering a therapeutic strategy.