fulltext.study @t Gmail

Biocompatibility of corroding tungsten coils: in vitro assessment of degradation kinetics and cytotoxicity on human cells

Paper ID Volume ID Publish Year Pages File Format Full-Text
12346 790 2003 5 PDF Available
Title
Biocompatibility of corroding tungsten coils: in vitro assessment of degradation kinetics and cytotoxicity on human cells
Abstract

This study was performed to determine the in vitro degradation rate of tungsten coils and to evaluate the potential local toxicity of tungsten on human pulmonary arterial endothelial (EC) and smooth muscle cells (SMC) and human dermal fibroblasts (FB). Therefore, tungsten coils were immersed in Ringer's solution and loss of mass and increase in tungsten concentration in the electrolyte were assessed in relation to immersion time (maximum: 140 days). Primary cultures of EC, SMC and FB were grown on multiplates for 1–10 days with ascending concentrations (0.1–5000 μg/ml) of tungsten in the growth medium. Metabolic activity was assessed by the use of the WST-1 Test (Roche). The in vitro degradation rate of the tungsten coil was 29 μg/day. EC were most susceptible to tungsten with a LD50 of 50 μg/ml. In contrast, the LD50 for SMC was 100 and 1000 μg/ml for FB after 10 days of incubation.We conclude that, in vitro, degradation rate of tungsten coils is slow (29 μg/day). Very high (>50 μg/ml [normal serum value 0.0002 μg/ml]) tungsten concentrations are needed to result in local cytopathologic effects on human EC, SMC and FB. These results correspond to clinical observations demonstrating the absence of toxicity of degrading tungsten coils in adult and pediatric patients despite elevated serum tungsten levels.

Keywords
Biocompatibility; Biodegradation; Cell viability; Corrosion; In vitro test; Metal ion toxicity
First Page Preview
Biocompatibility of corroding tungsten coils: in vitro assessment of degradation kinetics and cytotoxicity on human cells
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us
Publisher
Database: Elsevier - ScienceDirect
Journal: Biomaterials - Volume 24, Issue 22, October 2003, Pages 4057–4061
Authors
, , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us