Walluscheck KP, Steinhoff G, Haverich A. Endothelial cell seeding of de-endothelialised human arteries: improvement by adhesion molecule induction and flow-seeding technology.
Eur J Vasc Endovasc Surg 1996;
12:46-53. [PMID:
8696896 DOI:
10.1016/s1078-5884(96)80274-7]
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Abstract
OBJECTIVES
To assess re-endothelialisation of denuded human arteries by two different seeding techniques using adhesion molecule induction and a dynamic flow-seeding.
DESIGN
Prospective, open study.
SETTING
University Department of Cardiovascular Surgery.
MATERIALS AND METHODS
In the first group (I) segments of human common carotid arteries (n = 4) were balloon-denuded, short-time seeded with cultured adult human venous endothelial cells (EC) and exposed to a mock circulation. In the second group (II) (n = 4), EC were incubated with a synthetic RGD peptide (arginine-glycine-aspartate) prior to seeding with the aim of upregulating the cellular adhesion molecules and increasing EC attachment. In the third group (III) (n = 4), EC were seeded not using the common technique of instillating cells and sequentially rotating the graft but by a dynamic flow application. The percentage of EC-covered luminal surface was assessed by image analysis of scanning electron micrographs.
RESULTS
EC attachment was significantly increased in groups II (73%) and III (94%) compared with group I (34%). In group III, a preconfluent monolayer could be established immediately after seeding. One hour of artificial perfusion resulted in no significant EC loss in any of the study groups.
CONCLUSIONS
RGD-peptide preincubation improves EC seeding of biological surfaces. Because of accelerated seeding times it may have good potential for clinical applications. The flow-seeding technology may be indispensable if EC seeding of the vascular surface of complete organ systems is required.
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