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  • Title: Serum lipoprotein (A) and apolipoproteins during pregnancy and postpartum in normal women.
    Author: Rymer J, Constable S, Lumb P, Crook M.
    Journal: J Obstet Gynaecol; 2002 May; 22(3):256-9. PubMed ID: 12521494.
    Abstract:
    This study was designed to investigate whether serum lipoprotein (a) is affected by pregnancy and to relate this to changes in other lipids, lipoproteins and apolipoproteins. The study involved twenty-nine healthy Caucasian pregnant women at term and 27 non-pregnant women matched for age who acted as controls. Samples of venous blood were obtained from 29 pregnant women at term (between 37 and 42 weeks) and 22 of these women provided a second sample after 12 weeks post-partum. Twenty-seven non-pregnant women acted as controls. Samples were taken for Lp(a) and also cholesterol, triglyceride, HDL-cholesterol, apolipoprotein (apo) A and B1. No significant difference was found in the serum concentrations of Lp(a). However, the pregnant women had significantly higher serum concentrations of cholesterol, triglyceride, apo A1 and B (P<0.001) than the controls. The ratio of apo A1: apo B was significantly lower than controls (P<0.001). HDL-cholesterol was not altered by pregnancy but was lower (P<0.05) than the controls after a period of 12 weeks post-partum. Despite a hyperlipidaemia in pregnancy the serum concentrations of Lp(a) are not affected suggesting different metabolic control for this lipoprotein.
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