Elsevier

Biomaterials

Volume 17, Issue 1, January 1996, Pages 3-14
Biomaterials

An albumin-coated polyester arterial graft: in vivo assessment of biocompatibility and healing characteristics

https://doi.org/10.1016/0142-9612(96)80749-6Get rights and content

Abstract

The albumin-coated vascular graft (ACG) and its uncoated polyester substrate, the Vascular® II (V-II), were evaluated in terms of biocompatibility and biofunctionality using two in vivo animal studies. Biocompatibility and immunoreactivity were assessed by implanting intraperitoneally in the rat small segments of the ACG and the V-II graft and harvesting them with their surrounding tissue 3d, 1, 2 and 4 weeks later. Cytofluorometric determination of total T cells (CD3), the ratio of CD4CD8 subsets and the percentage of IL-2 receptor-positive T cells in the peripheral blood has revealed that no significant difference in any of the T cell populations was found between the ACG and the V-II graft. The cellular reactivity of the ACG in terms of acid phosphatase activity at the implant side was significantly greater at 3d but not at longer periods. Biofunctionality was evaluated by implanting both grafts as a thoracoabdominal vascular bypass in dogs for 11 different periods ranging from 4 h to 6 months. The rate of albumin resorption was such that traces were still present at 1 month, but no longer observable at 2 months. Tissue incorporation into the graft wall was earlier for the V-II (2 weeks) than for the ACG (4 weeks), which showed complete encapsulation, tissue incorporation and endothelialization after 2 months in vivo. Only small differences were observed between both grafts in terms of platelet and fibrin uptake on the luminal surface. The prostacyclin/thromboxane A2 ratio increased to a level higher that 1.0 aorta within 1 month for the V-II and 4 months for the ACG. In conclusion, the Bard ACG has demonstrated excellent biocompatibility in terms of blood T cell behaviour and acid phosphatase activity at the implant site. Finally, its healing response is equivalent to that of the uncoated Dacron® prosthesis once the albumin coating has been resorbed.

References (39)

  • D Domurado et al.

    Albuminated Dacron prostheses as improved blood vessel substitutes

    J Bioeng

    (1978)
  • GS McGee et al.

    Experimental evaluation of a new albumin-impregnated knitted Dacron prosthesis

    Am Surg

    (1987)
  • JM Legendre et al.

    The initial blood retention properties of arterial prostheses

    Res Exp Med

    (1986)
  • JD Rumisek et al.

    The influence of early surface thromboreactivity on long-term arterial graft patency

    Surgery

    (1989)
  • SW Hirt et al.

    Comparative in vivo study on the healing qualities of four different presealed vascular prostheses

    J Vasc Surg

    (1993)
  • DJ Cziperle et al.

    Albumin impregnated vascular grafts: albumin resorption and tissue reactions

    J Cardiovasc Surg

    (1992)
  • U Hake et al.

    Healing parameters of a new albumin-coated knitted Dacron graft

    Thorac Cardiovasc Surg

    (1991)
  • WS McCune et al.

    The viability of long blood vessel grafts

    Ann Surg

    (1945)
  • E Debille et al.

    Dilatability and stretching characteristics of polyester arterial prostheses. Evaluation of the elastic behaviour

  • Cited by (0)

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