rdf:type |
|
lifeskim:mentions |
umls-concept:C0006780,
umls-concept:C0031676,
umls-concept:C0063890,
umls-concept:C0178499,
umls-concept:C0442821,
umls-concept:C1167624,
umls-concept:C1373200,
umls-concept:C1546465,
umls-concept:C1548779,
umls-concept:C1705175,
umls-concept:C1705176,
umls-concept:C1705177,
umls-concept:C1705178,
umls-concept:C1882348,
umls-concept:C1947902,
umls-concept:C2603343,
umls-concept:C2827499
|
pubmed:issue |
15
|
pubmed:dateCreated |
1984-8-29
|
pubmed:abstractText |
The effects of the neurotropic drug isaxonine on fully hydrated dipalmitoyl-phosphatidyl-choline (DPPC) bilayers has been studied in the temperature range 0 degree-60 degrees, using differential scanning calorimetry and electron spin resonance spectroscopy, with two stearic acid spin labels. At low concentration (1% mol/mol), isaxonine is trapped in the polar interface and enhances the phospholipid multibilayers organization in the gel state. In contrast, at high concentration (30% mol/mol), the drug disorganizes the phospholipidic structures and may induce domain formation by phase separation. The strong interactions of isaxonine at the lipid-water interface change the ionization state of the stearic acid spin labels which become totally ionized. Then isaxonine acts as a modifier of the surface pH of the bilayer. The strong membrane effects of isaxonine may explain in part its pharmacological properties in vivo.
|
pubmed:language |
eng
|
pubmed:journal |
|
pubmed:citationSubset |
IM
|
pubmed:chemical |
|
pubmed:status |
MEDLINE
|
pubmed:month |
Aug
|
pubmed:issn |
0006-2952
|
pubmed:author |
|
pubmed:issnType |
Print
|
pubmed:day |
1
|
pubmed:volume |
33
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
2407-17
|
pubmed:dateRevised |
2006-11-15
|
pubmed:meshHeading |
pubmed-meshheading:6087826-Calorimetry, Differential Scanning,
pubmed-meshheading:6087826-Electron Spin Resonance Spectroscopy,
pubmed-meshheading:6087826-Hydrogen-Ion Concentration,
pubmed-meshheading:6087826-Lipid Bilayers,
pubmed-meshheading:6087826-Membrane Fluidity,
pubmed-meshheading:6087826-Osmolar Concentration,
pubmed-meshheading:6087826-Phospholipids,
pubmed-meshheading:6087826-Pulmonary Surfactants,
pubmed-meshheading:6087826-Pyrimidines,
pubmed-meshheading:6087826-Spin Labels,
pubmed-meshheading:6087826-Temperature
|
pubmed:year |
1984
|
pubmed:articleTitle |
Isaxonine base is a strong perturber of phospholipid bilayer order and fluidity--a differential scanning calorimetry and spin labeling study.
|
pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
|