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Vascular prostheses with controlled release of antibiotics: Part 2. In vitro biological evaluation of vascular prostheses treated by cyclodextrins

Paper ID Volume ID Publish Year Pages File Format Full-Text
14075 1072 2007 6 PDF Available
Title
Vascular prostheses with controlled release of antibiotics: Part 2. In vitro biological evaluation of vascular prostheses treated by cyclodextrins
Abstract

Viability tests by the colony forming method show no toxicity for all CDs (β-CD, γ-CD, HPβ-CD and HPγ-CD) and their associated polymer. A survival rate of 100% is observed for all CDs at high concentration 400 ppm. Proliferation tests revealed a low proliferation of L132 cells on grafted vascular prostheses and untreated prostheses and good proliferation on Melinex® (film form of PET). A proliferation of 17% is observed after 3 days of incubation and decrease at 4% after 6 days on prostheses. Melinex® exhibits a proliferation rate as the controls. Vitality tests confirm proliferation tests and show a good vitality of cells even for low cell amounts. From these experiments it becomes obvious that the decreasing proliferation rate is not a cytotoxic effect but is due to the chemical and/or physical surface characteristics. A similar result is obtained for cell adhesion kinetics between grafted vascular prostheses and control. After 2 h adhesion, a lower adhesion is observed on untreated prostheses. Theses results were confirmed by immunochemistry and morphology tests. This cell adhesion inhibiting effect of the PET prostheses contributes to a better “survival” of vascular prostheses without secondary obstruction or stenosis.

Keywords
PET vascular prosthesis; Cyclodextrins; Grafting; Biocompatibility; Toxicity; Adhesion
First Page Preview
Vascular prostheses with controlled release of antibiotics: Part 2. In vitro biological evaluation of vascular prostheses treated by cyclodextrins
Publisher
Database: Elsevier - ScienceDirect
Journal: Biomolecular Engineering - Volume 24, Issue 1, February 2007, Pages 143–148
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering