Apolipoprotein B 100 and 48
نویسنده
چکیده
Apolipoprotein B is the main structural surface protein found on all beta-lipoproteins (Chylomicrons, VLDLs, IDLs and LDLs). There is a single molecule of apoB on each of those lipoproteins. It is the only apolipoprotein that is not transferablei.e. it is with the particle from its birth till its death. Beta-lipoproteins are the lipoproteins capable of trafficking cholesterol into the artery wall and hence if present in increased numbers, they are the cause of atherosclerosis. That is why an apoB level is so predictive of atherosclerosis.
منابع مشابه
A novel antiserum specific to apolipoprotein B-48: application in the investigation of postprandial lipidaemia in humans.
1. Apolipoprotein B-48, the transport protein for chylomicrons, is identical with apolipoprotein B-100 for the first 48% of its sequence. No antiserum has yet been reported that can recognize apolipoprotein B-48, but not apolipoprotein B-100. 2. In the present study an antiserum was raised to the C-terminal sequence of apolipoprotein B-48, using specific chemical reactions to ensure that the ch...
متن کاملIsolation and characterization of apolipoprotein B-48 and B-100 very low density lipoproteins from type III hyperlipoproteinemic subjects.
Two major species of human apolipoprotein (apo) B have been identified, apo B-48 and apo B-100, which are the predominant forms in chylomicrons and very low density lipoproteins (VLDL), respectively. Due to defective hepatic clearance, apo B-48 containing lipoproteins accumulate in the plasma of subjects with type III hyperlipoproteinemia. In the present study, we have used immunoaffinity chrom...
متن کاملMetabolism of apolipoproteins B-48 and B-100 of triglyceride-rich lipoproteins in patients with familial dysbetalipoproteinemia.
The metabolism of apolipoproteins B-48 and B-100 (apo B-48 and B-100) in large triglyceride-rich lipoproteins was studied in three adults with familial dysbetalipoproteinemia (F. dys.) and compared to that of normolipidemic subjects. One Caucasian F. dys. subject was apparently homozygous for the common form of apo E-2, (Arg158----Cys), whereas the two Black subjects were homozygous for a diffe...
متن کاملThe Relationship between Levels of Lipids and Lipoprotein B-100 in Maternal Serum and Umbilical Cord Serum and Assessing Their Effects on Newborn Infants Anthropometric Indices
Background & aim: This study aimed to determine the relationship between lipid and apolipoprotein B-100 (apo B-100) levels in maternal and umbilical cord sera as well as the effects of these components on anthropometric measurements of newborn infants. Methods:This correlational study was performed on 85 appropriate for gestational age (AGA) newborns and their mothers. For analysis, 5 ml of m...
متن کاملPostprandial changes of apoB-100 and apoB-48 in TG rich lipoproteins in familial combined hyperlipidemia.
Impaired chylomicron (chylo) remnant clearance and small VLDL overproduction are major metabolic abnormalities in familial combined hyperlipidemia (FCHL). Quantitative data on postprandial apolipoprotein B-48 (apoB-48) and apolipoprotein B-100 (apoB-100) in TG rich lipoproteins (TRL) in FCHL have not been reported before. Eight untreated FCHL patients and 10 matched controls underwent a 24 h or...
متن کاملApolipoprotein B-48 and B-100 very low density lipoproteins. Comparison in dysbetalipoproteinemia (type III) and familial hypertriglyceridemia (type IV).
A protein band having the same migration as apolipoprotein (apo) B-48 was observed by SDS electrophoresis in the plasma very low density lipoprotein (VLDL) from 14 Type IV and three Type III hyperlipoproteinemic subjects and from six normal fasting subjects. The VLDL from five Type IV, three Type III, and one normal subject were separated into two subfractions, retained and nonretained, by immu...
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