Plasma cholesterol, triglyceride and apolipoprotein-B were measured in healthy women during pregnancy. Hyperlipidaemia was most marked in the third trimester of pregnancy, but the increases in cholesterol, triglyceride and apolipoprotein-B were not identical (14, 74 and 36 %, respectively). The increase in plasma cholesterol was due to a progressive rise in very low density (VLDL) and low density (LDL) lipoproteins. There was a change in composition and size of both VLDL and LDL, demonstrated by a reduction in the ratio of cholesterol to apolipoprotein-B and altered properties of both lipoproteins on polyacrylamide gradient gel electrophoresis. It is difficult to explain these changes but they did not appear to be related to growth hormone, oestrogens or progestogens.

Keywords:
Lipoproteins, Apolipoprotein-B, Cholesterol, Triglycerides, Pregnancy, Oestrogens, Progestogens, Acromegaly
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© 1976 S. Karger AG, Basel
1976
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