Lymphatic transport of puerarin occurs after oral administration of different lipid-based formulations to unconscious lymph duct-cannulated rats

Pharm Dev Technol. 2014 Sep;19(6):743-7. doi: 10.3109/10837450.2013.829093. Epub 2013 Aug 27.

Abstract

This study investigated the potential of targeted intestinal lymphatic transport of puerarin via a lipid formulation approach. Three formulations of PEG nanoemulsion, nanosuspension and an oil suspension containing puerarin were examined with the lymph-cannulated anaesthetized rat model. Plasma and lymph samples were analyzed by HPLC. Lymph triglyceride was measured using an enzymatic colorimetric technique. After 8 h, the total administered dose accumulated in the thoracic lymph duct was analyze. Nanoemulsion, nanosuspension and oil suspension was 0.065 ± 0.006%, 0.137 ± 0.018%, 0.021 ± 0.002% of the administered dose, respectively. In nanoemulsion, nanosuspension and oil suspension group, the systemic bioavailability of oral puerarin was 11%, 16% and 11% for lymph-cannulated rats, 41%, 67% and 18% for control rats. Absorption into the intestinal lymph should thus contribute to ∼30%, 51% and 7% of the systemic bioavailable puerarin. This data indicated that lipid-based nano drug formulation produced higher lymph concentrations of puerarin than oil suspension. The nanosuspension formulation may be considerable in terms of increased local concentrations in lymphoid tissue.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Administration, Oral
  • Animals
  • Biological Availability
  • Biological Transport
  • Chemistry, Pharmaceutical / methods
  • Emulsions / chemistry
  • Emulsions / metabolism
  • Intestinal Absorption
  • Isoflavones / chemistry*
  • Isoflavones / metabolism*
  • Lipids / chemistry*
  • Lymphatic System / metabolism*
  • Male
  • Nanoparticles / chemistry
  • Nanoparticles / metabolism
  • Oils / chemistry
  • Oils / metabolism
  • Polyethylene Glycols / chemistry
  • Polyethylene Glycols / metabolism
  • Rats
  • Rats, Sprague-Dawley
  • Suspensions / chemistry
  • Suspensions / metabolism
  • Triglycerides / metabolism

Substances

  • Emulsions
  • Isoflavones
  • Lipids
  • Oils
  • Suspensions
  • Triglycerides
  • Polyethylene Glycols
  • puerarin