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Die Ultrastruktur der Neointima arterieller Gefäßprothesen aus lyophilisierter menschlicher Dura

Langzeitergebnisse bei Hunden

The ultrastructure of the neointima of arterial prostheses made of lyophilized human dura. long-term results in dogs

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Research in Experimental Medicine

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Summary

Five arterial prostheses made of lyophilized human dura (LHD) were inserted into dogs and removed after 4, 5 1/2, 13, 43, and 46 months to be studied with the electron microscope. The neointima of all grafts consisted of pseudo-endothelial cells, fibrocytes, and collagen fibrils. Additionally, 43 and 46 months after implantation smooth muscle cells and elastic microfibrils were present. Thus, the composition of the neointima was substantially identical with that of the neointima of synthetic arterial grafts and collagenfabric ones. The clinical application of arterial prostheses of LHD, however, seems at present too early because of degenerative changes in the walls of those grafts which remained nearly 4 years in the dogs.

Zusammenfassung

5 aus lyophilisierter menschlicher Dura (LMD) hergestellte und Hunden implantierte Arterienprothesen wurden nach 4, 5 1/2, 13, 43 und 46 Monaten entnommen und elektronenmikroskopisch untersucht. Die Neointima aller Implantate bestand aus Pseudo-Endothelzellen, Fibrozyten und Kollagenfibrillen. 43 und 46 Monate nach Implantation waren außerdem glatte Muskelzellen und elastische Mikrofibrillen in der Neointima vorhanden. Diese entsprach somit in ihrer Zusammensetzung im wesentlichen der Neointima von Kunststoff- und Kollagen-Kunststoff-Arterienprothesen. Die klinische Erprobung von LMD-Implantaten als arterieller Gefäßersatz ist jedoch wegen degenerativer Wandveränderungen in den Prothesen mit fast vierjähriger Verweildauer vorerst noch zu früh.

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Marquart, K.H., Maurer, P.C. & Scherer, H. Die Ultrastruktur der Neointima arterieller Gefäßprothesen aus lyophilisierter menschlicher Dura. Res. Exp. Med. 169, 243–251 (1977). https://doi.org/10.1007/BF01852062

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  • DOI: https://doi.org/10.1007/BF01852062

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