Histologic findings after in vivo placement of small intestine submucosal vascular grafts and saphenous vein grafts in the carotid artery in dogs

G. E. Sandusky, S. F. Badylak, R. J. Morff, W. D. Johnson, G. Lantz

Research output: Contribution to journalArticle

158 Scopus citations

Abstract

A small caliber vascular graft from porcine small intestine submucosa (SIS) was implanted in a canine carotid artery (n = 24) and compared with an autogenous saphenous vein graft that was implanted in the contralateral carotid artery. In this study, four grafts were evaluated at the following times after surgery: 2, 7, 14, 28, 90, and 180 days. One SIS graft thrombosed at 2 days, two SIS and two saphenous vein grafts were thrombosed at 90 days, and one SIS and one saphenous vein graft were thrombosed at 180 days. At 2 days after implant, the luminal surface of the SIS graft was covered by a thin (30 μ) fibrin meshwork. By 14 days after surgery, endothelial cells on the fibrin meshwork were staining for FVIII-related antigen. Smooth muscle cells were observed in the new intima (fibrin meshwork) by 28 days. At 90 days, both types of graft had arterialized with an intima covered by endothelium, a smooth muscle media, and marked adventitial fibrosis. Similar histology was observed at 180 days. These results indicate that this SIS graft was similar to saphenous vein graft in the dog.

Original languageEnglish (US)
Pages (from-to)317-324
Number of pages8
JournalAmerican Journal of Pathology
Volume140
Issue number2
StatePublished - 1992

ASJC Scopus subject areas

  • Pathology and Forensic Medicine

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