Compound polyglactin 910/polypropylene small vessel prostheses

Howard P. Greisler, Dae Un Kim, James W. Dennis, John J. Klosak, Katherine A. Widerborg, Eric D. Endean, Richard M. Raymond, Joan Ellinger

Research output: Contribution to journalArticlepeer-review

23 Scopus citations


This study evaluated morphologic and functional characteristics of tissue reactions to compound prostheses of 69% absorbable polyglactin 910 (PG910) and 31% nonabsorbable polypropylene in the rabbit. Forty-two woven PG910/polypropylene prostheses (24 × 4 mm internal diameter) implanted into rabbit infrarenal aortas were harvested after 2 weeks to 12 months. Each explant was photographed and sectioned for light microscopy and transmission and scanning electron microscopy. Randomly selected explants underwent either compliance and bursting strength measurements or assays of production of prostacyclin and thromboxane metabolites by luminal surfaces of both regenerated conduits and normal control aortas in response to administered sodium arachidonate. Results showed 100% patency with no aneurysms and 2% stenoses (1 of 42 prostheses). Confluent endothelial-like cellular luminal surfaces covering oriented smooth muscle-like myofibroblasts comprised the inner capsules whose thicknesses stabilized at 1 to 2 months. Only residual polypropylene remained in the prostheses after 2 months. Compliance studies reflected a 0.65 mm (14%) change over a pressure range of 0 to 160 mm Hg. All regenerated prosthesis-tissue complexes had bursting strengths greater than the proximal perianastomotic native aortas, which burst between 600 and 2000 mm Hg. At 1 month the rate of production of 6-keto-PGF per square millimeter of surface area of experimental segments was normal. Production of 6-keto-PGF by experimental segments at 3 months had increased fourfold whereas thromboxane B2, (TxB2) production remained unchanged. The 6-keto-PGF/TxB2 ratio increased from 1 to 4 months. This study demonstrates clinically efficacious morphologic, mechanical, and biochemical characteristics of PG910/polypropylene-elicited vascular prosthesis-tissue complexes.

Original languageEnglish
Pages (from-to)572-583
Number of pages12
JournalJournal of Vascular Surgery
Issue number4
StatePublished - Apr 1987

Bibliographical note

Funding Information:
Supported by a grant from the Veterans Administration.

ASJC Scopus subject areas

  • Surgery
  • Cardiology and Cardiovascular Medicine


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