alexa The binding of very low density lipoprotein remnants to the low density lipoprotein receptor in familial defective apolipoprotein B-100.
Genetics & Molecular Biology

Genetics & Molecular Biology

Journal of Molecular Biomarkers & Diagnosis

Author(s): Maher VM, Gallagher JJ, Myant NB

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Abstract We have compared the affinity for low density lipoprotein (LDL) receptors of LDL and very low density lipoprotein (VLDL) remnants from patients with familial defective apo B-100 (FDB) with that of LDL and VLDL remnants from normal subjects. The binding affinity of FDB LDL was markedly reduced in all 14 FDB patients examined, hut the affinity of FDB remnants did not differ significantly from that of remnants prepared from normal subjects. Since the mutant form of apo B-100 present in FDB is recognized by LDL receptors with greatly reduced efficiency, we suggest that apo B plays only a minor role in the receptor-mediated uptake of VLDL remnants by the liver in man. These results are consistent with our previous suggestion that the ability of drugs that stimulate hepatic receptor activity to lower the plasma LDL level in FDB is due in part to increased hepatic uptake of lipoprotein precursors of LDL, including remnant particles with normal apo B-100 and those with mutant apo B-100.
This article was published in Atherosclerosis and referenced in Journal of Molecular Biomarkers & Diagnosis

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