Poly(gadodiamide fumaric acid): A Bioresorbable, Radiopaque, and MRI-Visible Polymer for Biomedical Applications

Amy C. Goodfriend, Tre R. Welch, Kytai T. Nguyen, Jian Wang, Romaine F. Johnson, Alan Nugent, Joseph M. Forbess

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

Bioresorbable medical devices once implanted into the body are "invisible" to imaging techniques such as X-ray/fluoroscopy and magnetic resonance imagining (MRI). Prior attempts to produce radiopaque polymers have limited success due to their inability to generate homogeneous mixtures of polymer and contrast agent without subsequent alterations in polymer structure. Here we investigate a novel approach in which a MRI contrast medium, gadodiamide, can be used as a polymerization initiator in poly(propylene fumarate) (PPF) synthesis to achieve a radiopaque and MRI-visible polymer poly(gadodiamide fumaric acid) (PGFA). With this method polymer structure, thermal properties, and rheological behavior are conserved with no prior manipulation to monomer units necessary. This unique polymer in combination with poly(lactic-co-glycolic acid) (PLGA) can be formulated into MRI-visible nanoparticles with drug delivery potential. This novel polymer in both liquid and nanoparticle form enables new possibilities in medical device and drug delivery design.

Original languageEnglish (US)
Pages (from-to)677-684
Number of pages8
JournalACS Biomaterial Science and Engineering
Volume1
Issue number8
DOIs
Publication statusPublished - Dec 14 2015

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Keywords

  • bioresorbable polymer
  • MRI-visible
  • nanoparticles
  • polymer characterization
  • polymer synthesis
  • radiopaque

ASJC Scopus subject areas

  • Biomaterials
  • Biomedical Engineering

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