Pharmaceutical Research

, Volume 8, Issue 3, pp 380–384

The Effects of Cyclodextrins on the Disposition of Intravenously Injected Drugs in the Rat

Authors

  • Henderik W. Frijlink
    • Department of Pharmaceutical Technology and BiopharmacyUniversity of Groningen
  • Eric J. F. Franssen
    • Department of Pharmacology and TherapeuticsUniversity of Groningen
  • Anko C. Eissens
    • Department of Pharmaceutical Technology and BiopharmacyUniversity of Groningen
  • Roelof Oosting
    • Department of Pharmacology and TherapeuticsUniversity of Groningen
  • Coenraad F. Lerk
    • Department of Pharmaceutical Technology and BiopharmacyUniversity of Groningen
  • Dirk K. F. Meijer
    • Department of Pharmacology and TherapeuticsUniversity of Groningen
Article

DOI: 10.1023/A:1015857902238

Cite this article as:
Frijlink, H.W., Franssen, E.J.F., Eissens, A.C. et al. Pharm Res (1991) 8: 380. doi:10.1023/A:1015857902238

Abstract

Naproxen and flurbiprofen form complexes with hydroxypropyl-β-cyclodextrin; with stability constants of 2207 and 12515 M −1 respectively. However, only small fractions of the drug remain complexed when the drug–cyclodextrin complex is added to plasma in vitro. This result can be explained by albumin effectively competing with cyclodextrin for drug binding and by the simultaneous displacement of the drug from cyclodextrins by plasma cholesterol. Naproxen and flurbiprofen were administered intravenously to rats as cyclodextrin complexes. The disposition in the body of naproxen was not significantly altered by the complexation. This indicates that immediately after administration all drug is removed from the cyclodextrin complex. However, the initial distribution of flurbiprofen was changed upon complexation. Drug concentrations in liver, brain, kidney, and spleen were increased, indicating that hydroxypropyl-β-cyclodextrin may improve the presentation of the flurbiprofen to biomembranes, as compared with plasma proteins. The effect was transient; 60 min after injection the differences in tissue concentration compared with controls were dissipated. Finally, the importance of protein binding in determining the mode of interaction of cyclodextrins on drug disposition is discussed.

hydroxypropyl-β-cyclodextrin naproxen flurbiprofen intravenous administration tissue concentration protein binding

Copyright information

© Plenum Publishing Corporation 1991