Platinum coil-mediated implantation of growth factor-secreting endovascular tissue grafts: An in vivo study

David F. Kallmes, Armistead D. Williams, Harry J. Cloft, Maria Beatriz S. Lopes, Gerald R. Hankins, Gregory A. Helm

Research output: Contribution to journalArticlepeer-review

70 Scopus citations

Abstract

PURPOSE: To demonstrate in vivo that platinum embolic coils can be used to deliver genetically modified, growth factor-secreting fibroblast grafts into the endovascular space with the long-term goal of improving fibrosis within coil-embolized cerebral aneurysms. MATERIALS AND METHODS: Murine fibroblasts that contained multiple inserts of the DNA of human basic fibroblast growth factor were grown in culture onto 10-mm-long segments of Guglielmi detachable coils. Control (n = 4) and fibroblast-bearing (n = 4) coils were implanted into the common carotid artery in nude rats. The arterial segments that contained the coil were harvested after 14 or 35 days. Cellular content and collagen formation in the treated vessels were assessed histologically. RESULTS: At both 14 and 35 days, samples with control coils showed primarily involuting blood elements with minimal fibroblast proliferation or collagen formation. At 14 days, samples with fibroblast- bearing coils showed extensive fibroblast proliferation. At 35 days, samples with fibroblast-brearing coils showed marked interval fibroblast proliferation and collagen formation. CONCLUSION: Platinum coils can be used as a cell deliver device. Direct intravascular implantation of growth factor- secreting fibroblast grafts leads to improved intravascular scar formation, therefore theoretically reducing the potential for aneurysm regrowth or coil compaction.

Original languageEnglish (US)
Pages (from-to)519-523
Number of pages5
JournalRadiology
Volume207
Issue number2
DOIs
StatePublished - May 1998

Keywords

  • Aneurysm, carotid
  • Aneurysm, cerebral
  • Aneurysm, therapy
  • Carotid arteries, therapeutic blockade

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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