The transcript levels for six HDL-metabolizing genes (LDLR, LCAT, ABCA1, SCARB1, ZDHHC8, and BMP1) were decreased, while the transcript level of APOA1 gene was increased in mononuclear cells of subjects with hyperalphalipoproteinemia as compared with subjects with hypoalphalipoproteinemia.
Human CETP deficiency is associated with dramatic elevations of HDL cholesterol and apolipoprotein A-I levels, while PLTP variants with increased expression are associated with higher HDL levels.
Hyperalphalipoproteinemia in human lecithin cholesterol acyltransferase transgenic rabbits. In vivo apolipoprotein A-I catabolism is delayed in a gene dose-dependent manner.
Family members homozygous for CETP deficiency (n = 10) had moderate hypercholesterolemia (mean total cholesterol level [+/- SD], 7.01 +/- 0.83 mmol per liter), markedly increased levels of HDL cholesterol (4.24 +/- 1.01 mmol per liter) and apolipoprotein A-I, and decreased levels of low-density lipoprotein cholesterol (1.99 +/- 0.80 mmol per liter) and apolipoprotein B.