Fig. 2.

Niacin increased the formation of lipid-poor apoA-I particles and pre β 1 migrating HDL particles. A: Native gradient PAGE analysis of culture medium from HepG2 cells. 0.2 μ g of purified apoA-I was used for positive control. B: Densitometric quantitation of the lipid-poor apoA-I versus total HDL particles from A; *P < 0.05; **P < 0.01. C: 10 μ g of medium protein was analyzed by 2D electrophoresis and immunoblotting with apoA-I antibody. Representatives of at least three experiments are shown.