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Metabolic changes in pregnancy.

Kristine Y Lain1, Patrick M Catalano

  • 1Departments of Obstetrics and Gynecology and Internal Medicine, University of Kentucky, Lexington, Kentucky 40536-0293, USA. kylain2@email.uky.edu

Clinical Obstetrics and Gynecology
|November 6, 2007
PubMed
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Maternal metabolism shifts from anabolic in early pregnancy to catabolic in late pregnancy. This change ensures nutrient availability for fetal growth by altering insulin sensitivity and substrate concentrations.

Area of Science:

  • Reproductive biology
  • Human physiology
  • Endocrinology

Background:

  • Maternal metabolism undergoes significant adaptations during pregnancy.
  • Early pregnancy is characterized by an anabolic state, promoting nutrient storage.
  • Late pregnancy shifts to a catabolic state to support fetal development.

Purpose of the Study:

  • To describe the metabolic changes in maternal physiology during pregnancy.
  • To elucidate the transition from anabolic to catabolic states.
  • To understand substrate availability for fetal growth.

Main Methods:

  • Review of physiological and metabolic changes during gestation.
  • Analysis of hormonal and substrate level alterations.
  • Comparison of early versus late pregnancy metabolic profiles.

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Main Results:

  • Early pregnancy: anabolic state, increased insulin sensitivity, fat storage.
  • Late pregnancy: catabolic state, decreased insulin sensitivity (insulin resistance), increased glucose and free fatty acids.
  • Metabolic shifts support feto-placental and maternal demands.

Conclusions:

  • Pregnancy involves a dynamic metabolic reprogramming.
  • The shift to a catabolic state in late pregnancy is crucial for fetal nutrition.
  • Understanding these changes is vital for managing pregnancy health and outcomes.