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Related Experiment Videos

Changes in cholesteryl ester transfer protein activity during normal gestation and postpartum

A Iglesias1, A Montelongo, E Herrera

  • 1Servicio de Bioquímica-Investigación, Hospital Ramón y Cajal, Madrid, Spain.

Clinical Biochemistry
|February 1, 1994
PubMed
Summary

Cholesteryl ester transfer protein (CETP) activity increases during early pregnancy, peaking in the second trimester. This change in CETP activity is linked to elevated triglycerides in high-density lipoprotein (HDL) during gestation.

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Area of Science:

  • Lipid metabolism
  • Cardiovascular physiology
  • Reproductive endocrinology

Background:

  • Cholesteryl ester transfer protein (CETP) facilitates the transfer of cholesteryl esters and triglycerides between lipoproteins.
  • Pregnancy involves significant alterations in lipid profiles and lipoprotein metabolism.
  • Understanding CETP's role during gestation is crucial for managing cardiovascular health in pregnant individuals.

Purpose of the Study:

  • To investigate the dynamic changes in CETP activity during pregnancy and postpartum.
  • To correlate CETP activity with alterations in various circulating lipoproteins.
  • To elucidate CETP's contribution to gestational dyslipidemia.

Main Methods:

  • Plasma samples were collected from healthy pregnant women (first, second, third trimesters, and postpartum) and non-pregnant controls.

Related Experiment Videos

  • CETP activity was measured in the plasma fraction with density > 1.21 kg/L.
  • Levels of VLDL-lipids, LDL-cholesterol, HDL-cholesterol, HDL-phospholipids, apolipoprotein A-I, and HDL-triglyceride were quantified.

    • Main Results:

    • CETP activity was significantly higher in the second trimester of gestation compared to controls.
    • CETP activity peaked in the second trimester, declined in the third, and was lowest postpartum.
    • Gestational changes in CETP activity correlated with increased HDL-triglyceride levels and the HDL-triglyceride/VLDL-triglyceride ratio.

    Conclusions:

    • CETP activity undergoes significant modulation during human pregnancy.
    • The observed changes in CETP activity contribute to the accumulation of triglycerides in HDL during gestation.
    • These findings highlight CETP as a key player in pregnancy-associated alterations of lipoprotein metabolism.