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Type: Artigo de periódico
Title: Interactions of chlorpromazine with phospholipid monolayers: Effects of the ionization state of the drug
Author: Pickholz, M
Oliveira, ON
Skaf, MS
Abstract: Molecular dynamics simulations have been performed to investigate the interactions between chlorpromazine (CPZ) and Langmuir monolayers of the zwitterionic dipalmitoylphosphatidylcholine (DPPC) and the anionic dipalmitoylphosphatidylglycerol (DPPG). Simulations for a fixed surface density and different charge states - neutral and protonated CPZ - were able to capture important features of the CPZ-phospholipid monolayer interaction. Neutral CPZ is predominantly found in the hydrophobic tail region, whereas protonated CPZ is located at the lipid-water interface. Specific interactions (hydrogen bonds) between protonated CPZ and the lipid head groups were found for both zwitterionic and anionic monolayers. We computed lipid tail order parameters and investigated the effects of the drug upon tail ordering. We also computed electrostatic surface potentials and found qualitative good agreement with experimental results. (c) 2006 Elsevier B.V. All rights reserved.
Subject: DPPC
model membrane
molecular dynamics
Country: Holanda
Editor: Elsevier Science Bv
Rights: fechado
Identifier DOI: 10.1016/j.bpc.2006.10.010
Date Issue: 2007
Appears in Collections:Unicamp - Artigos e Outros Documentos

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