title: Hypertriglyceridemia in pregnancy does not contribute to the enhanced formation of remnant lipoprotein particles.
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.
authors.affiliation: Laboratory of Chemistry, College of Liberal Arts and Sciences, Tokyo Medical and Dental University, 2-8-30, Kohnodai, Ichikawa, Chiba 272-0827, Japan. okazaki.las@tmd.ac.jp
authors.forename: Mitsuyo
authors.initials: M
authors.lastname: Okazaki
authors.forename: Shinichi
authors.initials: S
authors.lastname: Usui
authors.forename: Katsuto
authors.initials: K
authors.lastname: Tokunaga
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Nakajima
authors.forename: Sanae
authors.initials: S
authors.lastname: Takeichi
authors.forename: Takamitsu
authors.initials: T
authors.lastname: Nakano
authors.forename: Katsuyuki
authors.initials: K
authors.lastname: Nakajima
mesh_terms: D002784:Cholesterol / Q000097:blood*; D008078:Cholesterol, LDL / Q000097:blood; D002851:Chromatography, High Pressure Liquid; D003924:Diabetes Mellitus, Type 2 / Q000097:blood / Q000150:complications; D016640:Diabetes, Gestational / Q000097:blood / Q000150:complications; D005260:Female; D006801:Humans; D015228:Hypertriglyceridemia / Q000097:blood* / Q000150:complications; D008074:Lipoproteins / Q000097:blood*; D008075:Lipoproteins, HDL / Q000097:blood; D008079:Lipoproteins, VLDL / Q000097:blood; D011247:Pregnancy; D011248:Pregnancy Complications / Q000097:blood*; D014280:Triglycerides / Q000097:blood*
chemical_list: D008078:Cholesterol, LDL; D008074:Lipoproteins; D008075:Lipoproteins, HDL; D008079:Lipoproteins, VLDL; D014280:Triglycerides; C112017:remnant-like particle cholesterol; D002784:Cholesterol