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NMR investigations of interactions between anesthetics and lipid bilayers
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Physical Chemistry.ORCID iD: 0000-0002-6524-1441
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2008 (English)In: Biochimica et Biophysica Acta - Biomembranes, ISSN 0005-2736, E-ISSN 1879-2642, Vol. 1778, no 11, 2604-2611 p.Article in journal (Refereed) Published
Abstract [en]

Interactions between anesthetics (lidocaine and short chain alcohols) and lipid membranes formed by dimyristoylphosphatidylcholine (DMPC) were studied using NMR spectroscopy. The orientational order of lidocaine was investigated using deuterium NMR on a selectively labelled compound whereas segmental ordering in the lipids was probed by two-dimensional H-1-C-13 separated local field experiments under magic-angle spinning conditions. In addition, trajectories generated in molecular dynamics (MD) computer simulations were used for interpretation of the experimental results. Separate simulations were carried out with charged and uncharged lidocame molecules. Reasonable agreement between experimental dipolar interactions and the calculated counterparts was observed. Our results clearly show that charged lidocaine affects significantly the lipid headgroup. In particular the ordering of the lipids is increased accompanied by drastic changes in the orientation of the P-N vector in the choline group.

Place, publisher, year, edition, pages
2008. Vol. 1778, no 11, 2604-2611 p.
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URN: urn:nbn:se:kth:diva-18016DOI: 10.1016/j.bbamem.2008.07.023ISI: 000261263500018Scopus ID: 2-s2.0-54049115425OAI: oai:DiVA.org:kth-18016DiVA: diva2:336061
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2017-12-12Bibliographically approved

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Dvinskikh, Sergey V.

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