In familial dysbetalipoproteinemia, the beta mobility fraction contains remnant particles from both chylomicrons (B-48) and hepatogenous VLDL (B-100), suggesting an impaired common removal mechanism.
Observational
The study demonstrates that in familial dysbetalipoproteinemia, remnant particles accumulating in the beta fraction originate from both intestinal chylomicrons and hepatic VLDL, suggesting a shared, impaired removal mechanism.
We used the low molecular weight form of apolipoprotein B (B-48) as a marker for the identification of remnant particles formed from chylomicrons in the plasma of patients with familial dysbetalipoproteinemia. In the serum of patients fasted 14 hours, the d less than 1.006 g/cm3 lipoproteins of prebeta mobility, separated by starch block electrophoresis, contained only the primary hepatogenous species of apolipoprotein B (B-100), and their lipid composition resembled that of normal prebeta very low density lipoproteins. In contrast, the fraction with beta mobility contained both the B-48 and B-100 proteins; the B-48 protein was found primarily among the largest particles. All fractions of beta mobility were greatly enriched with cholesteryl esters. The beta fraction thus contains remnant particles which appear to originate both from chylomicrons and hepatogenous very low density lipoproteins. It appears that these remnant particles share a common removal mechanism which is impaired in familial dysbetalipoproteinemia.
Kane et al. (Sat,) conducted a observational in Familial dysbetalipoproteinemia. Lipoprotein analysis was evaluated on Identification of remnant particles using apolipoprotein B (B-48) and B-100 markers. In familial dysbetalipoproteinemia, the beta mobility fraction contains remnant particles from both chylomicrons (B-48) and hepatogenous VLDL (B-100), suggesting an impaired common removal mechanism.