Enhancedex vivo buccal transport of propranolol: Evaluation of phospholipids as permeation enhancers

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Abstract

The aim of the present study was to evaluate the effects of two phospholipid permeation enhancers, lysophosphatidylcholine (LPC) and didecanoylphosphatidylcholine (DDPC), along with a fusidic acid derivative, sodium taurodihydrofusidate (STDHF) and ethanol (EtOH) on the buccal transport of propranolol hydrochloride (PPL) using anex vivo buccal diffusion model. The permeation rate of [3H]PPL as measured by steady-state fluxes increased with increasing EtOH concentration. A significant flux enhancement (P<0.05) was achieved by EtOH at 20 and 30 %v/v concentrations. At a 0.5 %w/v permeation enhancer concentration, the buccal permeation of [3H]PPL was significantly enhanced by all the enhancers studied (i.e., LPC, DDPC and STDHF) compared to the control (phosphate-buffered saline pH 7.4, PBS). LPC and DDPC displayed a greater degree of permeation enhancement compared with STDHF and EtOH-PBS mixtures with an enhancement ratio of 3.2 and 2.9 for LPC and DDPC, respectively compared with 2.0 and 1.5 for STDHF and EtOH:PBS 30:70 %v/v mixture, respectively. There was no significant difference between LPC and DDPC for the flux values and apparent permeability coefficients of [3H]PPL. These results suggest that phospholipids are suitable as permeation enhancers for the buccal delivery of drugs.

Key words

Buccal delivery Propranolol Permeation enhancer Lysophosphatidylcholine Didecanoylphosphatidylcholine Sodium taurodihydrofusidate 

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Copyright information

© The Pharmaceutical Society of Korea 2003

Authors and Affiliations

  1. 1.Department of Industrial and Physical Pharmacy, School of PharmacyPurdue UniversityWest LafayetteUSA
  2. 2.College of PharmacyChung-Ang UniversitySeoulKorea

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