Hypertriglyceridemia in pregnancy does not contribute to the enhanced formation of remnant lipoprotein particles

Mitsuyo Okazaki, Shinichi Usui, Katsuto Tokunaga, Yasuhiro Nakajima, Sanae Takeichi, Takamitsu Nakano, Katsuyuki Nakajima

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

Background: During pregnancy, serum cholesterol (TC) and triglyceride (TG) concentrations are known to increase significantly, but whether remnant lipoprotein particles (RLP) increase has not been shown. Methods: We compared lipid profiles in 22 healthy pregnant women to 31 healthy nonpregnant women and 24 patients with diabetes mellitus (DM), by measuring cholesterol and TG concentrations in major lipoprotein classes after HPLC separation and immunoseparation of RLP. Results: Serum TG and TC concentrations were significantly higher in the pregnant group than in the healthy control or DM groups. Cholesterol and TG concentrations of all major lipoprotein classes were also significantly higher in the pregnant group than the control and DM groups, except for VLDL-TG in the DM group. RLP-C and RLP-TG concentrations were significantly higher in the pregnant group (8.7 mg/dl and 25.4 mg/dl on average) than the control group (2.4 mg/dl and 5.7 mg/dl), but not different from the DM group (8.8 mg/dl and 24.1 mg/dl). RLP-TG to RLP-C ratios were similar among the three groups and correlated with the VLDL-TG to VLDL-C ratio. The percentages of RLP-C in VLDL-C and RLP-TG in VLDL-TG in the pregnant group (15.9% and 15.7%) were significantly lower than those of the control (48.5% and 35.6%) and the DM (32.7% and 20.8%) groups. Conclusions: RLP increased moderately during gestation with the increase in VLDL and TG, but the percentage of RLP in VLDL was significantly lower in the pregnant women compared with the control and DM patients, suggesting that hypertriglyceridemia in pregnancy is not primarily due to an increase in the atherogenic RLP.

Original languageEnglish
Pages (from-to)169-181
Number of pages13
JournalClinica Chimica Acta
Volume339
Issue number1-2
DOIs
Publication statusPublished - Jan 2004

Keywords

  • HPLC
  • Hypertriglyceridemia
  • Pregnancy
  • Remnant lipoprotein particles
  • Triglyceride-rich lipoproteins
  • Type II diabetes mellitus

ASJC Scopus subject areas

  • Biochemistry
  • Clinical Biochemistry
  • Biochemistry, medical

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