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A Method of Effectively Improved α-Mangostin Bioavailability.

Yan Zhao1, Guosheng Tang2, Qiang Tang2

  • 1College of Chinese Medicinal Materials, Jilin Agriculture University, No. 2888 Xincheng Street, Changchun, 130118, Jilin, China. zhyjlu79@163.com.

European Journal of Drug Metabolism and Pharmacokinetics
|May 21, 2015
PubMed
Summary

A new soft capsule formulation significantly improved the oral bioavailability of alpha-mangostin (α-Mangostin), a compound with anti-inflammatory and antitumor properties, in rat studies.

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Area of Science:

  • Pharmacology
  • Natural Products Chemistry
  • Drug Delivery Systems

Background:

  • Alpha-mangostin (α-Mangostin), a xanthone from Garcinia mangostana, shows anti-inflammatory and antitumor potential.
  • Poor oral absorption limits the therapeutic efficacy of α-Mangostin.
  • Developing effective delivery systems is crucial for harnessing α-Mangostin's benefits.

Purpose of the Study:

  • To enhance the oral bioavailability of α-Mangostin.
  • To evaluate the pharmacokinetics and tissue distribution of a novel α-Mangostin soft capsule formulation in rats.

Main Methods:

  • Preparation of a soft capsule using vegetable oil as a dispersion matrix for α-Mangostin.
  • Development and validation of an High-Performance Liquid Chromatography (HPLC) assay for quantifying α-Mangostin in biological samples.
  • Conducting pharmacokinetic and tissue distribution studies in rats following intravenous (i.v.) and oral administration.

Main Results:

  • The HPLC method was successfully validated for accurate quantification of α-Mangostin.
  • Pharmacokinetic studies demonstrated significantly improved absolute bioavailability of α-Mangostin with the soft capsule formulation.
  • Observed absolute bioavailabilities were 61.1% (low dose), 51.5% (medium dose), and 42.5% (high dose).

Conclusions:

  • The developed soft capsule formulation effectively enhances the oral bioavailability of α-Mangostin.
  • This formulation represents a promising strategy for improving the therapeutic potential of α-Mangostin.
  • Further research can explore this delivery system for other poorly absorbed natural compounds.