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The effect of fibronectin coating on endothelial cell kinetics in polytetrafluoroethylene grafts.

Abstract：

:Despite the proven experimental success of endothelial cell seeding of prosthetic vascular grafts, the process has not been widely accepted for clinical use because of its complexity and the need for a relatively large length of autologous vein to provide the requisite number of cells. Using autologous endothelial cells radiolabeled with indium 111-oxine, we studied the effect of fibronectin coating of polytetrafluoroethylene grafts in a canine carotid interposition model on initial endothelial cell adherence and subsequent cell retention for up to 72 hours following restoration of blood flow. Since the number of harvested endothelial cells varied widely depending on the diameter and length of available vein, cellular adherence was best expressed as a percentage of the original cell harvest. More than twice as many (46.7% vs. 19.8%) endothelial cells initially adhered to fibronectin-coated grafts compared with uncoated control grafts. Fibronectin did not appear to influence the loss of cells within the first 30 minutes following restoration of blood flow. However, over the next 24 hours, it clearly reduced the mean cell loss from 3.7%/hr to 2.2%/hr and resulted in a sixfold increase (21.3% vs. 3.4%) in the number of retained cells at the end of a 24-hour period. When the endothelial cell preclot was performed with a solution of culture medium 199, as opposed to heparinized whole blood, there was no significant difference in endothelial cell retention.(ABSTRACT TRUNCATED AT 250 WORDS)

journal_name

J Vasc Surg

journal_title

Journal of vascular surgery

authors

Ramalanjaona G,Kempczinski RF,Rosenman JE,Douville EC,Silberstein EB

doi

10.1067/mva.1986.avs0030264

subject

Has Abstract

pub_date

1986-02-01 00:00:00

pages

264-72

issue

2

eissn

0741-5214

issn

1097-6809

pii

S0741521486000381

journal_volume

3

pub_type

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