Abstract
Context: Transporting drugs through the lymphatic system has attracted increasing attention. Lipid-based formulations have been proved to be an effective way to improve systemic bioavailability of highly lipophilic drugs by increasing intestinal lymphatic transport.Objective: The formulation of polymer micelle was developed for probucol to improve its intestinal lymphatic transport.Materials and methods: Methoxy-polyethylenelglycol-distearyl phosphatidyl-ethanolamine (mPEG-DSPE) polymer was chosen to develop the micelles for probucol. The physicochemical properties were characterized. Caco-2 cell model, unconscious and conscious lymph duct cannulated rat models were established for in vitro and in vivo evaluation of lymphatic transport.Results: In vitro evaluation in the Caco-2 cell model showed that the micellar formulation could significantly increase the uptake and transport of probucol. The study in unconscious and conscious lymph duct cannulated rat models further verified the significant enhancement of lymphatic transport of probucol by mPEG-DSPE micelles.Discussion and conclusion: These results suggested that mPEG-DSPE micellar formulation could provide a useful alternative approach for improving the lymphatic transport of hydrophobic compounds.
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