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Long-term results of tissue-engineered small-caliber vascular grafts in a rat carotid arterial replacement model

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Abstract

The concept of tissue engineered small-caliber vascular grafts (TE-SCVGs) is theoretically ideal. In this study, we evaluated the long-term (more than 1 year) course of TE-SCVGs using a rat carotid arterial replacement model. We fabricated a TE-SCVG scaffold (0.7 mm in diameter) with electrospun nano-scale fibers. Poly-ε-caprolactone was used as a biodegradable polymer. These artificial vessels were then used in carotid arterial replacement performed on Sprague–Dawley rats. The implanted grafts were removed at an early phase (1, 2, 6 weeks), middle phase (12, 24 weeks), and late phase (48, 72 weeks) after implantation. Twenty-nine patent grafts from among the 40 implanted grafts (patency 72.5 %) could be evaluated. No aneurysm formation was observed during the follow-up period. Endothelial cells positive for immunostaining with von Willebrand factor were found to be already attached to the inner surface of the TE-SCVGs in the early phase. The percentage of smooth muscle cell specific marker (α-smooth muscle actin and calponin with fluorescent immunostaining) positive cells, which seemed to be mesenchymal cells in the graft wall, increased with time, while, in contrast, the scaffold material decreased. Even after 72 weeks, however, although the scaffold material had degraded, it had not disappeared completely. These results show that the novel TE-SCVGs we developed were still functioning in the rat carotid arterial circulation after more than 1 year. However, further investigations will be required with regard to regeneration of the SMC layer and the complete degradation of graft materials.

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References

  1. Faries PL, Logerfo FW, Arora S, Hook S, Pulling MC, Akbari CM, Campbell DR, Pomposelli FB Jr. A comparative study of alternative conduits for lower extremity revascularization: all-autogenous conduit versus prosthetic grafts. J Vasc Surg. 2000;32:1080–90.

    Article  PubMed  CAS  Google Scholar 

  2. Ballyk PD, Walsh C, Butany J, Ojha M. Compliance mismatch may promote graft-artery intimal hyperplasia by altering suture-line stresses. J Biomech. 1998;31:229–37.

    Article  PubMed  CAS  Google Scholar 

  3. Haruguchi H, Teraoka S. Intimal hyperplasia and hemodynamic factors in arterial bypass and arteriovenous grafts: a review. J Artif Organs. 2003;6:227–35.

    Article  PubMed  Google Scholar 

  4. Wu HC, Wang TW, Kang PL, Tsuang YH, Sun JS, Lin FH. Coculture of endothelial and smooth muscle cells on a collagen membrane in the development of a small-diameter vascular graft. Biomaterials. 2007;28:1385–92.

    Article  PubMed  CAS  Google Scholar 

  5. Chan-Park MB, Shen JY, Cao Y, Xiong Y, Liu Y, Rayatpisheh S, Kang GC, Greisler HP. Biomimetic control of vascular smooth muscle cell morphology and phenotype for functional tissue-engineered small-diameter blood vessels. J Biomed Mater Res A. 2009;88:1104–21.

    PubMed  Google Scholar 

  6. Kuwabara F, Narita Y, Yamawaki-Ogata A, Kanie K, Kato R, Satake M, Kaneko H, Oshima H, Usui A, Ueda Y. Novel small-caliber vascular grafts with trimer peptide for acceleration of endothelialization. Ann Thorac Surg. 2012;93:156–63.

    Article  PubMed  Google Scholar 

  7. Yokota T, Ichikawa H, Matsumiya G, Kuratani T, Sakaguchi T, Iwai S, Shirakawa Y, Torikai K, Saito A, Uchimura E, Kawaguchi N, Matuura N, Sawa Y. In situ tissue regeneration using a novel tissue-engineered, small-caliber vascular graft without cell seeding. J Thorac Cardiovasc Surg. 2008;136:900–7.

    Article  PubMed  Google Scholar 

  8. Kagami H, Agata H, Satake M, Narita Y. Considerations on designing scaffolds for soft and hard tissue engineering. In: Khang G, editor. The handbook of intelligent scaffold for regenerative medicine. 1st ed. Singapore: Pan Stanford Publishing; 2012. in press.

    Google Scholar 

  9. Shin’oka T, Matsumura G, Hibino N, Naito Y, Watanabe M, Konuma T, Sakamoto T, Nagatsu M, Kurosawa H. Midterm clinical result of tissue-engineered vascular autografts seeded with autologous bone marrow cells. J Thorac Cardiovasc Surg. 2005;129:1330–8.

    Article  PubMed  Google Scholar 

  10. Pektok E, Nottelet B, Tille JC, Gurny R, Kalangos A, Moeller M, Walpoth BH. Degradation and healing characteristics of small-diameter poly (ε-caprolactone) vascular grafts in the rat systemic arterial circulation. Circulation. 2008;118:2563–70.

    Article  PubMed  CAS  Google Scholar 

  11. Dzau VJ, Braun-Dullaeus RC, Sedding DG. Vascular proliferation and atherosclerosis: new perspectives and therapeutic strategies. Nat Med. 2002;8:1249–56.

    Article  PubMed  CAS  Google Scholar 

  12. Quifiones-Baldrich WJ, Prego A, Ucelay-Gomez R, Vescera CL, Moore WS. Failure of PTFE infrainguinal revascularization: patterns, management alternatives, and outcome. Ann Vasc Surg. 1991;5:163.

    Article  Google Scholar 

  13. Zhang WJ, Liu W, Cui L, Cao Y. Tissue engineering of blood vessel. J Cell Mol Med. 2007;11:945–57.

    Article  PubMed  CAS  Google Scholar 

Download references

Acknowledgments

This study was supported in part by a Grant-in-Aid for Science Research (no. 22890081) from the Ministry of Education, Culture, Sports, Science, and Technology of Japan, and Research Grants for Medical Science from the Takeda Science and Suzuken Memorial Foundations.

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Correspondence to Yuji Narita.

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Kuwabara, F., Narita, Y., Yamawaki-Ogata, A. et al. Long-term results of tissue-engineered small-caliber vascular grafts in a rat carotid arterial replacement model. J Artif Organs 15, 399–405 (2012). https://doi.org/10.1007/s10047-012-0652-6

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  • DOI: https://doi.org/10.1007/s10047-012-0652-6

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