Amorphous oxide - A platform for drug delivery

Chun Ming Shih, Shing Jong Lin, Yea Yang Su, Chun Che Shih

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Usually, a drug is loaded onto the metallic surface of a medical device by applying a polymer layer containing the drug. Unfortunately, polymer coatings on the metallic surface may exhibit numerous problems after implantation, such as late thrombosis, inflammation, and restenosis. Current research was conducted to investigate whether a suitable oxide layer can be used as a polymer-free platform for drug loading, especially for cardiovascular stents. The loading of heparin onto, as well as eluting of heparin from, the amorphous oxide film on the 316LVM stainless steel wire was confirmed by experimental studies using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), electron spectroscopy for chemical analysis (ESCA), high-performance liquid chromatography (HPLC), and activated clotting time (ACT). Evidence shows that amorphous oxide can be an ideal substitute for the polymer coating of drug-loaded stents to minimize metallic corrosion, inflammation, late-thrombosis, and restenosis.

Original languageEnglish
Pages (from-to)539-549
Number of pages11
JournalJournal of Controlled Release
Volume102
Issue number3
DOIs
Publication statusPublished - Feb 16 2005

Fingerprint

Oxides
Polymers
Pharmaceutical Preparations
Stents
Heparin
Thrombosis
Inflammation
Dielectric Spectroscopy
Photoelectron Spectroscopy
Corrosion
Stainless Steel
High Pressure Liquid Chromatography
Equipment and Supplies
Research

Keywords

  • Amorphous oxide
  • Drug-loading
  • Heparin
  • Stainless steel

ASJC Scopus subject areas

  • Pharmaceutical Science

Cite this

Amorphous oxide - A platform for drug delivery. / Shih, Chun Ming; Lin, Shing Jong; Su, Yea Yang; Shih, Chun Che.

In: Journal of Controlled Release, Vol. 102, No. 3, 16.02.2005, p. 539-549.

Research output: Contribution to journalArticle

Shih, Chun Ming ; Lin, Shing Jong ; Su, Yea Yang ; Shih, Chun Che. / Amorphous oxide - A platform for drug delivery. In: Journal of Controlled Release. 2005 ; Vol. 102, No. 3. pp. 539-549.
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