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Physicochemical interaction of opioid peptides with phospholipids and membranes

  • M. A. Alsina
  • , N. Solé
  • , C. Mestres
  • , M. A. Busquets
  • , I. Haro
  • , J. M.Garcia Antón*
  • *Corresponding author for this work

Research output: Indexed journal article Articlepeer-review

8 Citations (Scopus)

Abstract

The surface activity and opioid potency of peptide analogues of enkephalins are described. The molecules under study have as a general formula: Tyr-D · Met-Gly-Phe-Pro-NH-(CH2)n-CH3, n being 5, 9 or 13. The interaction of these peptide-alkylamides with PC, PS, PI and GM1 monolayers and their opioid activity measured by the GPI (guinea pig ileum) test are highly dependent on the hydrophobicity of the molecule. Moreover, the GPI muscle contraction records show a strong hydrophobic interaction between the peptides and the bilayer components, that holds the molecules anchored to the membrane and increases the duration of the effect.

Original languageEnglish
Pages (from-to)111-117
Number of pages7
JournalInternational Journal of Pharmaceutics
Volume70
Issue number1-2
DOIs
Publication statusPublished - 31 Mar 1991
Externally publishedYes

Keywords

  • Cholesterol
  • Compression isotherm
  • Ganglioside
  • Monolayer
  • Naloxone
  • Penetration kinetics
  • Peptide
  • Phospholipid

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