Linked Life Data

9506737

Source:http://linkedlifedata.com/resource/pubmed/id/9506737

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1998-4-14
pubmed:abstractText
A 51-yr-old woman without clinical evidence of Tangier disease, but with an extremely low high density lipoprotein (HDL) cholesterol level, was studied. No defect in the major structural protein of HDL, apolipoprotein AI (apo AI), was detected. A preponderance of small HDL particles in the patient's plasma suggested defective uptake of cellular cholesterol. Efflux of [3H]cholesterol from patient fibroblasts to normal apo AI was decreased 50%. Cholesterol efflux to HDL was also decreased, but efflux to trypsin-modified HDL was not. The patient's cells partitioned more exogenously provided [3H]cholesterol into free cholesterol and synthesized greater amounts of phosphatidylcholine than did normal or Tangier fibroblasts. Her fibroblasts did not differ from normal fibroblasts in sterol synthesis rate, cellular cholesterol and cholesterol ester content, or incorporation of oleate into cholesterol ester. The data indicate the presence of a defect in apolipoprotein-dependent cellular cholesterol efflux that differs from that seen in Tangier disease. These findings are the first evidence that other low HDL cholesterol syndromes, besides Tangier disease, may also be associated with cholesterol efflux abnormalities. The identification of mutant genes responsible for apolipoprotein-mediated efflux abnormalities should provide valuable insights into cellular mechanisms involved in the reverse cholesterol transport pathway.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0021-972X
pubmed:author
pubmed:issnType
Print
pubmed:volume
83
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
836-46
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1998
pubmed:articleTitle
Decreased cholesterol efflux from fibroblasts of a patient without Tangier disease, but with markedly reduced high density lipoprotein cholesterol levels.
pubmed:affiliation
Lipid Metabolism Unit, Massachusetts General Hospital, Boston 02114, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Review, Case Reports