TY - JOUR
T1 - Hyperlipoproteinemia
T2 - Metabolic basis and rationale for therapy
AU - Grundy, Scott M
N1 - Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
PY - 1984/8/27
Y1 - 1984/8/27
N2 - Most forms of hyperlipoproteinemia are the result of at least 1 of 4 basic defects of lipoprotein metabolism. Hypercholesterolemia is most commonly due to decreased activity of receptors for low-density lipoproteins (LDL). A deficiency of LDL receptors can be caused by either a genetic defect in the structure of the receptor or metabolic suppression of receptor synthesis by genetic factors or dietary saturated fatty acids and cholesterol. An elevation of triglycerides in chylomicrons or very low density lipoproteins (VLDL) can be secondary to a reduced activity of lipoprotein lipase, and an increase in the catabolic remnants of these lipoproteins can be due to an abnormal isoform of apolipoprotein E, the apolipoprotein that mediates hepatic uptake of lipoprotein remnants. Finally, hepatic overproduction of VLDL can produce hypertriglyceridemia, or if there is a concomitant defect in clearance of lipoproteins, an accentuated increase of VLDL, remnants or LDL will occur. Thus, lipoprotein overproduction can give rise to multiple lipoprotein phenotypes in a single family. Specific therapy of hyperlipoproteinemia should be directed toward correcting these metabolic defects.
AB - Most forms of hyperlipoproteinemia are the result of at least 1 of 4 basic defects of lipoprotein metabolism. Hypercholesterolemia is most commonly due to decreased activity of receptors for low-density lipoproteins (LDL). A deficiency of LDL receptors can be caused by either a genetic defect in the structure of the receptor or metabolic suppression of receptor synthesis by genetic factors or dietary saturated fatty acids and cholesterol. An elevation of triglycerides in chylomicrons or very low density lipoproteins (VLDL) can be secondary to a reduced activity of lipoprotein lipase, and an increase in the catabolic remnants of these lipoproteins can be due to an abnormal isoform of apolipoprotein E, the apolipoprotein that mediates hepatic uptake of lipoprotein remnants. Finally, hepatic overproduction of VLDL can produce hypertriglyceridemia, or if there is a concomitant defect in clearance of lipoproteins, an accentuated increase of VLDL, remnants or LDL will occur. Thus, lipoprotein overproduction can give rise to multiple lipoprotein phenotypes in a single family. Specific therapy of hyperlipoproteinemia should be directed toward correcting these metabolic defects.
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U2 - 10.1016/0002-9149(84)90852-X
DO - 10.1016/0002-9149(84)90852-X
M3 - Article
C2 - 6089539
AN - SCOPUS:0021268846
SN - 0002-9149
VL - 54
SP - 20
EP - 26
JO - The American journal of cardiology
JF - The American journal of cardiology
IS - 5
ER -