Characterization, in Vivo Evaluation, and Molecular Modeling of Different Propofol-Cyclodextrin Complexes To Assess Their Drug Delivery Potential at the Blood-Brain Barrier Level

J Chem Inf Model. 2016 Oct 24;56(10):1914-1922. doi: 10.1021/acs.jcim.6b00215. Epub 2016 Sep 23.

Abstract

In this study, we investigated the ability of the general anesthetic propofol (PR) to form inclusion complexes with modified β-cyclodextrins, including sulfobutylether-β-cyclodextrin (SBEβCD) and hydroxypropyl-β-cyclodextrin (HPβCD). The PR/SBEβCD and PR/HPβCD complexes were prepared and characterized, and the blood-brain barrier (BBB) permeation potential of the formulated PR was examined in vivo for the purpose of controlled drug delivery. The PR/SBEβCD complex was found to be more stable in solution with a minimal degradation constant of 0.25 h-1, a t1/2 of 2.82 h, and a Kc of 5.19 × 103 M-1 and revealed higher BBB permeability rates compared with the reference substance (PR-LIPURO) considering the calculated brain-to-blood concentration ratio (logBB) values. Additionally, the diminished PR binding affinity to SBEβCD was confirmed in molecular dynamics simulations by a maximal Gibbs free energy of binding (ΔGbind = -18.44 kcal·mol-1), indicating the more rapid PR/SBEβCD dissociation. Overall, the results demonstrated that SBEβCD has the potential to be used as a prospective candidate for drug delivery vector development to improve the pharmacokinetic and pharmacodynamic properties of general anesthetic agents at the BBB level.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • 2-Hydroxypropyl-beta-cyclodextrin
  • Anesthetics, Intravenous / administration & dosage*
  • Anesthetics, Intravenous / chemistry
  • Anesthetics, Intravenous / pharmacokinetics
  • Animals
  • Blood-Brain Barrier / metabolism*
  • Delayed-Action Preparations / chemistry
  • Drug Delivery Systems
  • Mice, Inbred C57BL
  • Mice, Transgenic
  • Molecular Dynamics Simulation
  • Propofol / administration & dosage*
  • Propofol / chemistry
  • Propofol / pharmacokinetics
  • beta-Cyclodextrins / administration & dosage*
  • beta-Cyclodextrins / chemistry
  • beta-Cyclodextrins / pharmacokinetics

Substances

  • Anesthetics, Intravenous
  • Delayed-Action Preparations
  • beta-Cyclodextrins
  • propofol hydroxypropyl-beta-cyclodextrin
  • 2-Hydroxypropyl-beta-cyclodextrin
  • SBE4-beta-cyclodextrin
  • Propofol