Concentration-dependent effect of melatonin on DSPC membrane


ŞAHİN İ., Bilge D., KAZANCI N., Severcan F.

JOURNAL OF MOLECULAR STRUCTURE, vol.1052, pp.183-188, 2013 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 1052
  • Publication Date: 2013
  • Doi Number: 10.1016/j.molstruc.2013.08.060
  • Journal Name: JOURNAL OF MOLECULAR STRUCTURE
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.183-188
  • Keywords: Melatonin, Distearoyl phosphatidylcholine, MLVs, Fourier transform infrared, Differential scanning calorimetry, PHOSPHOLIPID MODEL MEMBRANES, LIPID-PEROXIDATION, RADICAL SCAVENGER, PHASE-TRANSITION, ALPHA-TOCOPHEROL, REACTIVE OXYGEN, FLUIDITY, ANTIOXIDANT, METABOLITES, BEHAVIOR
  • Middle East Technical University Affiliated: Yes

Abstract

The concentration-induced effects of melatonin on distearoyl phosphatidylcholine (DSPC) model membranes were investigated by using two different non-invasive techniques, namely Fourier transform infrared (FTIR) spectroscopy and differential scanning calorimetry (DSC). An investigation of the C-H, C=O and PO2- double bond stretching mode in FTIR spectra and DSC studies reveals that the inclusion of melatonin changes the physical properties of the DSPC multilamellar liposomes (MLVs) by shifting the main phase transition to lower temperatures, abolishing the pretransition, ordering the system in the gel phase and slightly disordering the system in the liquid crystalline phase, increasing the dynamics both in the gel phase and liquid crystalline phases. Melatonin also causes strong hydrogen bonding between C=O and PO2- groups of lipids and the water molecules around. (C) 2013 Elsevier B.V. All rights reserved.