Document Detail


Preliminary report increased transport of intermediate density lipoprotein (LDL) with cholesterol loading.
MedLine Citation:
PMID:  6621369     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Although cholesterol loading in man generally leads to an increase in plasma cholesterol and low density lipoprotein cholesterol in particular, the mechanism for this is unknown. Because IDL formation rises in cholesterol-fed rats we have measured the transport of IDL apoprotein B in 8 men during two dietary periods containing either 200 mg or 1700 mg cholesterol per day. Radioiodinated IDL (Sf 12-20 or Sf 12-60) were reinjected and transport calculated from 48 hr specific radioactivity-time curves of apoprotein B in reisolated IDL. With cholesterol loading the IDL cholesterol and apoprotein B concentrations rose in 7 of 8 subjects (substantially in only 2). However IDL transport was stimulated more consistently and significantly (p less than 0.01), rising by at least 50% in 5 subjects. Furthermore the change in plasma total cholesterol concentration was significantly correlated with the change in IDL transport (r = +0.70, p less than 0.05). Since LDL are derived from IDL, the cholesterol-induced rise in IDL formation may explain the increase in LDL concentration with dietary cholesterol.
Authors:
P J Nestel; T Billington
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Metabolism: clinical and experimental     Volume:  32     ISSN:  0026-0495     ISO Abbreviation:  Metab. Clin. Exp.     Publication Date:  1983 Apr 
Date Detail:
Created Date:  1983-11-23     Completed Date:  1983-11-23     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0375267     Medline TA:  Metabolism     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  320-2     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Adult
Apolipoproteins / blood
Apolipoproteins B
Biological Transport
Cholesterol / blood*
Cholesterol, Dietary / metabolism*
Cholesterol, LDL
Humans
Lipoproteins / blood*
Lipoproteins, IDL
Lipoproteins, LDL / blood
Male
Middle Aged
Chemical
Reg. No./Substance:
0/Apolipoproteins; 0/Apolipoproteins B; 0/Cholesterol, Dietary; 0/Cholesterol, LDL; 0/Lipoproteins; 0/Lipoproteins, IDL; 0/Lipoproteins, LDL; 0/lipoprotein cholesterol; 57-88-5/Cholesterol

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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