Evidence map›Paper›PMID 9826613›Full record

ArticleBiophysical journal1998

Interaction of alpha-tocopherol with model human high-density lipoproteins.

J B Massey, H J Pownall

Open access · bronzeAbstract read
In one paragraph

Article in Biophysical journal, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed
0.8field-weighted citation impact, top 32% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

6 citing papers in PubMed, 14 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors at 1 institution in 1 country.

J B MasseyDepartment of Medicine, Baylor College of Medicine and The Methodist Hospital, Houston, Texas 77030 USA. jmassey@bcm.tmc.edu
H J Pownall
Baylor College of Medicine · US

Funding

Therapeutic Approaches to Dysregulated HDL MetabolismR01HL056865 · NHLBI · METHODIST HOSPITAL RESEARCH INSTITUTE · PI POWNALL, HENRY J. · 1997 to 2015
$5.2M
ENZYMIC REACTIONS OF MODEL PLASMA LIPOPROTEINSR01HL030914 · NHLBI · BAYLOR COLLEGE OF MEDICINE · PI POWNALL, HENRY J. · 1985 to 2010
$2.2M
NHLBI NIH HHS HL-30914NHLBI NIH HHS HL-56865
6 · The paper itself

Abstract

The effects of alpha-tocopherol on the properties of model high-density lipoproteins (HDLs), composed of human apolipoprotein A-I and dimyristoylphosphatidylcholine, were investigated by physicochemical methods. The intrinsic fluorescence of alpha-tocopherol and its effects on the polarization of fluorescence of 1,6-diphenyl-1,3,5-hexatriene, which probes the hydrocarbon region of the lipids, and 4-heptadecyl-7-hydroxycoumarin, which is a probe of lipid surfaces, suggest that alpha-tocopherol is located at the lipid-water interface. Relative to cholesterol, alpha-tocopherol in lipid surfaces is virtually inert physicochemically. Incorporation of alpha-tocopherol into HDLs induces only a modest increase in particle size, no change in the transition temperature, and little change in lipid polarity and lipid-lipid interactions. Moreover, alpha-tocopherol has only a negligible effect on the kinetic parameters of the lipophilic enzyme lecithin:cholesterol acyltransferase, which binds to phosphatidylcholine surfaces and forms cholesteryl esters. However, alpha-tocopherol has a dramatic inhibitory effect on the rate of association of apolipoprotein A-I with dimyristoylphosphatidylcholine, a process that occurs through the insertion of the protein into preformed defects in the lipid surface. It is proposed that alpha-tocopherol inhibits the rate of association of apolipoprotein A-I with dimyristoylphosphatidylcholine by inserting into defects within the lipid surface, thereby reducing the size and/or number of sites for insertion of apolipoprotein A-I.

Indexed as

2-NaphthylamineApolipoprotein A-IBiophysical PhenomenaBiophysicsChemical PhenomenaChemistry, PhysicalChromatography, GelDimyristoylphosphatidylcholineFluorescence PolarizationFluorescent DyesHumansIn Vitro TechniquesKineticsLipoproteins, HDLLiposomesMembrane Lipids2-NaphthylamineApolipoprotein A-IDimyristoylphosphatidylcholineFluorescent DyesLipoproteins, HDLLiposomesMembrane LipidsMembranes, ArtificialprodanSterol O-AcyltransferaseVitamin E

Identifiers

PMID9826613
PMCPMC1299964
OpenAlexW2082403263

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.