Evidence map›Paper›PMID 23438364›Full record

ArticleBiochimica et biophysica acta2013

Properties of membranes derived from the total lipids extracted from the human lens cortex and nucleus.

Laxman Mainali, Marija Raguz, William J O'Brien, Witold K Subczynski

Open access · greenAbstract read
In one paragraph

Article in Biochimica et biophysica acta, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers.

0numbers the graph read from it
0cells of the map it votes in
47citing papers in PubMed
1.3field-weighted citation impact, top 19% 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

47 citing papers in PubMed, 58 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

4 authors at 1 institution in 2 countries.

Laxman MainaliDepartment of Biophysics, Medical College of Wisconsin, Milwaukee, WI 53226, USA.
Marija Raguz
William J O'Brien
Witold K Subczynski
Medical College of Wisconsin · US

Funding

TR&D Project 3P41EB001980 · NIBIB · MEDICAL COLLEGE OF WISCONSIN · PI KLUG, CANDICE S · 2003 to 2017
$16.3M
MORPHOLOGY MODULEP30EY001931 · NEI · MEDICAL COLLEGE OF WISCONSIN · PI BURKE, JANICE M. · 1985 to 2016
$9.8M
DEVELOPMENT OF BIOMEDICAL ESR INSTRUMENTATIONR01EB002052 · NIBIB · MEDICAL COLLEGE OF WISCONSIN · PI KLUG, CANDICE S · 2003 to 2015
$6.4M
Liquid Rafts in Eye Lens: Discrimination by Pulse EPRR01EY015526 · NEI · MEDICAL COLLEGE OF WISCONSIN · PI SUBCZYNSKI, WITOLD K · 2005 to 2019
$4.8M
VISION RES LAB: HERPETIC KERATIC, CORE PIGMENT GENES, RETINITIS PIGMENTOSAC06RR016511 · NCRR · MEDICAL COLLEGE OF WISCONSIN · PI DUNN, MICHAEL J · 2002 to 2002
$1.4M
NCRR NIH HHS C06 RR016511NCRR NIH HHS RR016511NEI NIH HHS EY001931NEI NIH HHS EY015526NEI NIH HHS P30 EY001931NEI NIH HHS R01 EY015526NIBIB NIH HHS EB001980NIBIB NIH HHS EB002052NIBIB NIH HHS P41 EB001980NIBIB NIH HHS R01 EB002052
6 · The paper itself

Abstract

Human lens lipid membranes prepared using a rapid solvent exchange method from the total lipids extracted from the clear lens cortex and nucleus of 41- to 60-year-old donors were investigated using electron paramagnetic resonance spin-labeling. Profiles of the phospholipid alkyl-chain order, fluidity, oxygen transport parameter, and hydrophobicity were assessed across coexisting membrane domains. Membranes prepared from the lens cortex and nucleus were found to contain two distinct lipid environments, the bulk phospholipid-cholesterol domain and the cholesterol bilayer domain (CBD). The alkyl chains of phospholipids were strongly ordered at all depths, indicating that the amplitude of the wobbling motion of alkyl chains was small. However, profiles of the membrane fluidity, which explicitly contain time (expressed as the spin-lattice relaxation rate) and depend on the rotational motion of spin labels, show relatively high fluidity of alkyl chains close to the membrane center. Profiles of the oxygen transport parameter and hydrophobicity have a rectangular shape and also indicate a high fluidity and hydrophobicity of the membrane center. The amount of CBD was greater in nuclear membranes than in cortical membranes. The presence of the CBD in lens lipid membranes, which at 37°C showed a permeability coefficient for oxygen about 60% smaller than across a water layer of the same thickness, would be expected to raise the barrier for oxygen transport across the fiber cell membrane. Properties of human membranes are compared with those obtained for membranes made of lipids extracted from cortex and nucleus of porcine and bovine eye lenses.

Indexed as

AdultCell MembraneCell Membrane PermeabilityDiffusionElectron Spin Resonance SpectroscopyHumansHydrophobic and Hydrophilic InteractionsLens Cortex, CrystallineLens Nucleus, CrystallineLiposomesMembrane FluidityMembrane LipidsMiddle AgedMolecular StructureOxygenPhospholipidsLiposomesMembrane LipidsOxygenPhospholipids

Identifiers

PMID23438364
PMCPMC3633468
OpenAlexW2177271234

What OpenQuestion holds

Textmetadata
LicenceTDM
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.