Chase Dosing of Lipid Formulations to Enhance Oral Bioavailability of Nilotinib in Rats.

Pharmaceutical Research
Niklas J KoehlBrendan T Griffin

Abstract

Lipid-based formulations (LBF) have shown oral bioavailability enhancement of lipophilic drugs, but not necessarily in the case of hydrophobic drugs. This study explored the potential of lipid vehicles to improve the bioavailability of the hydrophobic drug nilotinib comparing a chase dosing approach and lipid suspensions. Nilotinib in vivo bioavailability in rats was determined after administering an aqueous suspension chase dosed with blank olive oil, Captex 1000, Peceol or Capmul MCM, respectively. Absolute bioavailability was determined (relative to an intravenous formulation). Pharmacokinetic parameters were compared to lipid suspensions. Compared to the lipid suspensions, the chase dosed lipids showed a 2- to 7-fold higher bioavailability. Both long chain chase dosed excipients also significantly increased the bioavailability up to 2-fold compared to the aqueous suspension. Deconvolution of the pharmacokinetic data indicated that chase dosing of nilotinib resulted in prolonged absorption compared to the aqueous suspension. Chase dosed LBF enhanced the in vivo bioavailability of nilotinib. Long chain lipids showed superior performance compared to medium chain lipids. Chase dosing appeared to prolong the absorption phase of ...Continue Reading

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Feb 24, 2019·Pharmaceutical Research·Niklas J KoehlBrendan T Griffin
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Citations

Jul 3, 2021·International Journal of Molecular Sciences·Eleonora RussoChiara Brullo
Aug 12, 2021·Langmuir : the ACS Journal of Surfaces and Colloids·Oliver J HedgeChristel A S Bergström

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