Document Detail


The influence of headgroup structure and fatty acyl chain saturation of phospholipids on monolayer behavior: a comparative rheological study.
MedLine Citation:
PMID:  17868664     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
This paper compares six phospholipidic monolayers at the water/chloroform interface by performing dilational rheological measurements with a drop tensiometer apparatus. The chosen lipids differ both in their headgroup structure and fatty acyl chain saturation or symmetry. The study concentrated on monolayers formed with DPPC, DPPE, DOPC, DOPE, POPC and POPE. Using a generalized Maxwell rheological model, transposed at the interface, the intimate intermolecular interactions between amphiphilic molecules are studied on and off the monolayer plane. The equilibrium and nonequilibrium phenomena are analyzed and, respectively, correlated with monolayer cohesion and with monolayer/sub-surface interactions. The purpose of this work is to gain further insights into the influences (as slight as they are) of the weak changes in phospholipid structure and on the behavior of the monolayers. The results, widely described, provide further details on nuances existing between very similar molecules, and likewise, on the synergies created between the different effects.
Authors:
Nicolas Anton; Patrick Saulnier; Frank Boury; Françoise Foussard; Jean-Pierre Benoit; Jacques E Proust
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Publication Detail:
Type:  Journal Article     Date:  2007-07-14
Journal Detail:
Title:  Chemistry and physics of lipids     Volume:  150     ISSN:  0009-3084     ISO Abbreviation:  Chem. Phys. Lipids     Publication Date:  2007 Dec 
Date Detail:
Created Date:  2007-10-15     Completed Date:  2008-01-02     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0067206     Medline TA:  Chem Phys Lipids     Country:  Ireland    
Other Details:
Languages:  eng     Pagination:  167-75     Citation Subset:  IM    
Affiliation:
Inserm U646, Ingénierie de la Vectorisation Particulaire, 10 rue A. Boquel, F-49100 Angers, France.
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MeSH Terms
Descriptor/Qualifier:
1,2-Dipalmitoylphosphatidylcholine / chemistry
Biochemistry / methods
Chloroform / chemistry
Fatty Acids / chemistry*
Membrane Lipids / chemistry*
Models, Chemical
Molecular Conformation
Phosphatidylcholines / chemistry
Phosphatidylethanolamines / chemistry
Phospholipids / chemistry*
Rheology / methods*
Surface Properties
Chemical
Reg. No./Substance:
0/1,2-dioleoyl-glycero-3-phosphatidyl ethanolamine; 0/Fatty Acids; 0/Membrane Lipids; 0/Phosphatidylcholines; 0/Phosphatidylethanolamines; 0/Phospholipids; 10015-85-7/1,2-oleoylphosphatidylcholine; 10015-88-0/1-palmitoyl-2-oleoylphosphatidylethanolamine; 2644-64-6/1,2-Dipalmitoylphosphatidylcholine; 3026-45-7/1,2-dipalmitoyl-3-phosphatidylethanolamine; 67-66-3/Chloroform; 6753-55-5/1-palmitoyl-2-oleoylphosphatidylcholine

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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