Linked Life Data

6508636

Source:http://linkedlifedata.com/resource/pubmed/id/6508636

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
1985-1-23
pubmed:abstractText
Plasma low density lipoprotein (LDL) kinetics and their relation to plasma very low density lipoprotein (VLDL) and LDL composition were determined in patients with familial combined hyperlipidemia (FCHL) of varying lipoprotein phenotypes. In both Type II and IV subjects, LDL apolipoprotein B (apo B) synthesis was greater than normal. In Type IV, the VLDL triglyceride/apo B ratio was normal and almost all of the LDL apo B was derived from VLDL. LDL cholesterol/apo B ratio was diminished and LDL apo B fractional catabolic rate (FCR) was sufficiently increased to prevent a rise in plasma LDL concentration. In Type II, VLDL triglyceride/apo B was reduced and 14% to 50% of the LDL was formed by direct synthesis. LDL cholesterol/apo B was normal and LDL apo B FCR was lower than in Type IV subjects. In four patients whose plasma lipid levels became normal with carbohydrate restriction and intake of a fibric acid derivative, plasma VLDL and LDL composition and LDL kinetic measurements remained unchanged. By contrast, VLDL triglyceride-apo B decreased and direct LDL synthesis increased in four patients whose phenotype changed to Type IIa. LDL cholesterol/apo B also increased and LDL FCR declined. Among patients with FCHL, significant correlations between VLDL triglyceride/apo B, LDL apo B derived by direct synthesis, LDL cholesterol/apo B, and LDL apo B FCR were found. Thus, increased apo B synthesis is a characteristic feature of FCHL. The phenotypic expression is determined by the availability of triglyceride for hepatic coupling to apo B which could influence the source, composition, and removal rate of circulating LDL. Despite normalization of their plasma lipid levels, some patients continued to show the compositional and kinetic features of FCHL.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0276-5047
pubmed:author
pubmed:issnType
Print
pubmed:volume
4
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
614-24
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:articleTitle
Low density lipoprotein metabolism in familial combined hyperlipidemia. Mechanism of the multiple lipoprotein phenotypic expression.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't