Heparin-released triglyceride lipase from three sources, adipose tissue, liver, and postheparin plasma, was compared. Heparin-released triglyceride lipase from liver differed in several major respects from that in adipose tissue. These differences included response to inhibitors and to high density lipoprotein in the incubation media. Heparin-released triglyceride lipase from liver, when compar...

Incubating MA-10 Leydig tumor cells with sodium oleate led to the accumulation of triglyceride within the cells. Triglycerides were deposited in a time- and dose-dependent fashion. Cellular triglyceride promoted storage of cholesteryl ester. As much cholesteryl ester was stored in oleate-treated cells as in cells treated with saturating concentrations of low density lipoprotein. Addition of bot...

Serial changes in circulating triglyceride, free fatty acids (FFA), insulin, and glucose have been measured in human subjects fed sucrose as the sole source of calories for 2- or 3-day periods. The sucrose was given either during the day with overnight fasting (19 subjects) or as continual 3-hour meals during the day and night (seven subjects). Insulin was infused overnight in five additional s...

Although the literature on epidemiological associations between plasma triglyceride and CHD is not completely consistent, trends do emerge from the studies described here. First, the majority of observational studies demonstrate a significant univariate relation, although the results of case-control and cross-sectional studies are more uniform than those from prospective study designs. In many ...

Reduced plasma levels of high density lipoprotein (HDL) cholesterol are associated with increased risk for coronary heart disease. Although plasma HDL levels are, in general, inversely related to plasma triglyceride (TG) concentrations, a small proportion of individuals with low HDL cholesterol concentrations have normal plasma TG levels. We wished to determine whether subjects with low plasma ...

To define the roles, In vivo, of hepatic triglyceride lipase and lipoprotein lipase in the catabolism of trlglyceiide-rlch lipoproteins, we Investigated the relationship between the activities of the above enzymes In postheparin plasma and the fractional removal rates of very low density lipoproteins (VLDL) and VLDL remnant particles. In 22 patients, the fractional removal rates of VLDL and VLD...

The present investigations have examined the mechanism(s) whereby Sf 60-400 very low density lipoproteins (VLDL) from Type IV hypertriglyceridemic subjects cause cholesteryl ester and triglyceride accumulation in J774 macrophages. Both apolipoprotein (apo) E-poor and apoE-rich Type IV VLDL subfractions, isolated by heparin-Sepharose chromatography, were capable of enhancing cellular cholesterol...