Development of hydrocortisone succinic acid/and 5-fluorouracil/chitosan microcapsules for oral and topical drug deliveries

Pik Ling Lam, Kenneth Ka Ho Lee, Raymond Siu Ming Wong, Gregory Yin Ming Cheng, Shuk Yan Cheng, Marcus Chun Wah Yuen, Kim Hung Lam, Roberto Gambari, Stanton Hon Lung Kok, Chung Hin Chui

Research output: Journal article publicationJournal articleAcademic researchpeer-review

28 Citations (Scopus)


Recently, we demonstrated the safety use of calendula oil/chitosan microcapsules as a carrier for both oral and topical deliveries. We also reported the improved biological activity towards skin cells and Staphylococcus aureus of phyllanthin containing chitosan microcapsules. However, the possibility of both oral and topical applications was still necessary to be further studied. Here we investigated that both oral and topical applications of chitosan-based microcapsules were tested using hydrocortisone succinic acid (HSA) and 5-fluorouracil (5-FU), respectively. The drug loading efficiency, particle size, surface morphology and chemical compositions of both drug loaded microcapsules were confirmed by UV-vis spectrophotometer, particle size analyzer, scanning electron microscope and Fourier transform infrared spectroscopy. The in vitro release studies revealed that both HSA and 5-FU could be released form chitosan microcapsules. The mean adrenocorticotropic hormone concentration in HSA loaded microcapsule mice plasma was detected to be lower than that of water control. One hundred micrograms per milliliter of 5-FU containing microcapsules exhibited a stronger growth inhibition towards skin keratinocytes than that of free 5-FU. In vitro drug delivery model demonstrated the delivery of 5-FU from microcapsule treated textiles into nude mice skin. Further uses of the drug loaded microcapsules may provide an efficiency deliverable tool for both oral and topical applications.

Original languageEnglish
Pages (from-to)3213-3218
Number of pages6
JournalBioorganic and Medicinal Chemistry Letters
Issue number9
Publication statusPublished - 1 May 2012


  • 5-Fluorouracil
  • Chitosan
  • Drug delivery
  • Hydrocortisone succinic acid
  • Microcapsule

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Medicine
  • Molecular Biology
  • Pharmaceutical Science
  • Drug Discovery
  • Clinical Biochemistry
  • Organic Chemistry


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