05/03/2026
Placental Leptin Production: Metabolic Signaling
Leptin, traditionally known as an adipocyte-derived hormone, is also actively synthesized by the placenta during pregnancy. Beyond appetite regulation, placental leptin plays a pivotal role in maternal–fetal metabolic adaptation.
🔬 Key Functions: • Regulates maternal energy balance
• Modulates insulin sensitivity
• Supports trophoblast proliferation and fetal growth
• Participates in inflammatory and oxidative signaling pathways (STAT3, MAPK, AMPK)
⚖️ Clinical Relevance: Altered placental leptin expression is associated with maternal obesity, gestational diabetes mellitus (GDM), fetal macrosomia, and preeclampsia—highlighting its importance in pregnancy metabolic homeostasis.
Understanding placental endocrine signaling enhances our insight into fetal programming and long-term metabolic health.
