Linked Life Data

2036442

Source:http://linkedlifedata.com/resource/pubmed/id/2036442

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1991-6-28
pubmed:abstractText
We have investigated the effect of two monosaccharides, glucose and fructose, and two disaccharides, sucrose and trehalose, on the thermotropic phase transition of unilamellar extruded vesicles of DPPC. All the sugars investigated raise the main transition temperature (Tm) of some fraction of the lipid, but there are differences between the effect of glucose and the other three sugars. At low concentrations of glucose, Tm is lowered. At high concentrations of glucose there are two transitions, one with a low Tm and one with a high Tm. The data suggest that at low concentrations, all of the glucose present may bind to the bilayer and increase headgroup spacing by physical intercalation or increased hydration. The appearance of a Tm above that of pure hydrated DPPC suggests the possibility of the dehydration of some other population of phospholipid molecules. The other three sugars increase Tm, but at high concentrations of trehalose, sucrose, and fructose a second peak occurs at a low Tm. The other sugars appear to dehydrate the bilayer at low concentrations, but may show some binding or increased hydration of some portion of the lipid at very high concentrations. The sugar effects on unilamellar vesicles are strikingly different from the effects of these sugars on multilamellar vesicles.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0006-3002
pubmed:author
pubmed:issnType
Print
pubmed:day
7
pubmed:volume
1064
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
267-74
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1991
pubmed:articleTitle
Solution effects on the thermotropic phase transition of unilamellar liposomes.
pubmed:affiliation
Department of Zoology, University of California, Davis 95616.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, Non-P.H.S.