Evidence map›Paper›PMID 27475340›Full record

ArticleThe Journal of chemical physics2016

Communication: Contrasting effects of glycerol and DMSO on lipid membrane surface hydration dynamics and forces.

Alex M Schrader, Chi-Yuan Cheng, Jacob N Israelachvili, Songi Han

Abstract readComparative Study
In one paragraph

Article in The Journal of chemical physics, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

20 citing papers in PubMed, 1 synthesis or guideline pooled it.

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  19. Surface chemical heterogeneity modulates silica surface hydration.Proceedings of the National Academy of Sciences of the United States of America · 2018
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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.

Alex M SchraderDepartment of Chemical Engineering, University of California, Santa Barbara, California 93106, USA.
Chi-Yuan ChengDepartment of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, USA.
Jacob N IsraelachviliDepartment of Chemical Engineering, University of California, Santa Barbara, California 93106, USA.
Songi HanDepartment of Chemical Engineering, University of California, Santa Barbara, California 93106, USA.

Funding

The Role of Lipid Membrane and Hydration on the Oligomerization and Function of PR and A2AR01GM116128 · NIGMS · UNIVERSITY OF CALIFORNIA SANTA BARBARA · PI HAN, SONGI · 2015 to 2018
$1.5M
NIGMS NIH HHS R01 GM116128
6 · The paper itself

Abstract

Glycerol and dimethyl sulfoxide (DMSO) are commonly used cryoprotectants in cellular systems, but due to the challenges of measuring the properties of surface-bound solvent, fundamental questions remain regarding the concentration, interactions, and conformation of these solutes at lipid membrane surfaces. We measured the surface water diffusivity at gel-phase dipalmitoylphosphatidylcholine (DPPC) bilayer surfaces in aqueous solutions containing ≤7.5 mol. % of DMSO or glycerol using Overhauser dynamic nuclear polarization. We found that glycerol similarly affects the diffusivity of water near the bilayer surface and that in the bulk solution (within 20%), while DMSO substantially increases the diffusivity of surface water relative to bulk water. We compare these measurements of water dynamics with those of equilibrium forces between DPPC bilayers in the same solvent mixtures. DMSO greatly decreases the range and magnitude of the repulsive forces between the bilayers, whereas glycerol increases it. We propose that the differences in hydrogen bonding capability of the two solutes leads DMSO to dehydrate the lipid head groups, while glycerol affects surface hydration only as much as it affects the bulk water properties. The results suggest that the mechanism of the two most common cryoprotectants must be fundamentally different: in the case of DMSO by decoupling the solvent from the lipid surface, and in the case of glycerol by altering the hydrogen bond structure and intermolecular cohesion of the global solvent, as manifested by increased solvent viscosity.

Indexed as

1,2-DipalmitoylphosphatidylcholineDiffusionDimethyl SulfoxideElectron Spin Resonance SpectroscopyGelsGlycerolHydrogen BondingLipid BilayersSolutionsSolventsSurface PropertiesWater1,2-DipalmitoylphosphatidylcholineDimethyl SulfoxideGelsGlycerolLipid BilayersSolutionsSolventsWater

Identifiers

PMID27475340
PMCPMC4967073

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.