No abstract

The early metabolism of cell-derived cholesterol was followed during the interaction of normolipaemic native plasma with cultured cell monolayers labelled to high specific activity with 3H-cholesterol. Kinetic analysis indicated that initial processing involved several prebeta-migrating high-density lipoprotein (HDL) species. A small prebeta species, the initial acceptor, was first converted to a lipoprotein whose composition predicts a discoidal structure. The free cholesterol content of this was then esterified by lecithin: cholesterol acyltransferase, and its cholesterol converted to the alpha mobility of spheroidal mature HDL the binding of apolipoprotein A-II. These studies follow the genesis of HDL in plasma from peripheral cell membrane cholesterol.

The ability of whole serum to promote cell cholesterol efflux and the relationships between apoprotein and lipoprotein components of human serum

No abstract