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A study on the PK and BA profiles in the mouse body for leonurine O/O microemulsion with determination by the

Yanan Sun1, Xiang Zhang1, Tao Lu2

  • 1Department of Pharmaceutics, Anhui University of Chinese Medicine, 103 Mei Shan Road, Hefei, Anhui, China.

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

Insights

Leonurine microemulsion (LE-ME) significantly enhances the bioavailability of leonurine (LE), a compound effective against cerebral thrombosis. This novel drug delivery system shows promising results for improving LE absorption and therapeutic potential.

Area of Science:

  • Pharmacology
  • Drug Delivery Systems
  • Biochemistry

Background:

  • Leonurine (LE) demonstrates therapeutic potential for cerebral thrombosis.
  • Poor aqueous solubility of LE results in significantly low bioavailability.
  • Effective drug delivery is crucial to harness LE's therapeutic benefits.

Purpose of the Study:

  • To prepare and characterize a leonurine O/O microemulsion (LE-ME).
  • To evaluate the in vivo pharmacokinetic behavior and bioavailability of LE-ME.
  • To compare the efficacy of LE-ME against a conventional leonurine suspension (LE-SWW).

Main Methods:

  • Development of a sensitive HPLC-MS/MS method for quantifying LE in mouse plasma.
  • Oral and intramuscular administration of LE-ME and LE-SWW in mice.
  • Pharmacokinetic parameter analysis including C max, T 1/2β, MRT, and absolute bioavailability.

Main Results:

  • Oral administration of LE-ME resulted in a 2.46-fold higher C max compared to LE-SWW.
  • Absolute bioavailability of LE-ME was 10.95%, significantly higher than LE-SWW's 1.78%.
  • Intramuscular administration of LE-ME achieved an absolute bioavailability of 37.45%.

Conclusions:

  • Leonurine O/O microemulsion (LE-ME) is an effective drug delivery system.
  • LE-ME significantly enhances the absorption and bioavailability of leonurine.
  • LE-ME holds promise for improving the treatment of cerebral thrombosis.
Keywords:
BioavailabilityLeonurineMicroemulsionPharmacokinetic

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