Cytotoxicity testing of silver-containing burn treatments using primary and immortal skin cells.

Abstract

A novel burn wound hydrogel dressing has been previously developed which is composed of 2-acrylamido-2-methylpropane sulfonic acid sodium salt with silver nanoparticles (silver AMPS). This study compared the cytotoxicity of this dressing to the commercially available silver products; Acticoat™, PolyMem Silver(®) and Flamazine™ cream. Human keratinocytes (HaCaT and primary HEK) and normal human fibroblasts (NHF) were exposed to dressings incubated on Nunc™ polycarbonate inserts for 24, 48 and 72h. Four different cytotoxicity assays were performed including; Trypan Blue cell count, MTT, Celltiter-Blue™ and Toluidine Blue surface area assays. The results were expressed as relative cell viability compared to an untreated control. The cytotoxic effects of Acticoat™ and Flamazine™ cream were dependent on exposure time and cell type. After 24h exposure, Acticoat™ and Flamazine™ cream were toxic to all tested cell lines. Surprisingly, HaCaTs treated with Acticoat™ and Flamazine™ had an improved ability to survive at 48 and 72h while HEKs and NHFs had no improvement in survival with any treatment. The novel silver hydrogel and PolyMem Silver(®) showed low cytotoxicity to all tested cell lines at every time interval and these results support the possibility of using the novel silver hydrogel as a burn wound dressing. Researchers who rely on HaCaT cells as an accurate keratinocyte model should be aware that they can respond differently to primary skin cells.

• Authors: Benjawan Boonkaew, Margit Kempf, Roy Kimble, Leila Cuttle
• Journal: Burns : journal of the International Society for Burn Injuries (Burns) Vol. 40 Issue 8 Pg. 1562-9 (Dec 2014) ISSN: 1879-1409 [Electronic] Netherlands
• PMID: 24767717 (Publication Type: Comparative Study, Journal Article, Research Support, Non-U.S. Gov't)
• Copyright: Copyright © 2014 Elsevier Ltd and ISBI. All rights reserved.

Chemical References

• Acrylamides
• Acticoat
• Alkanesulfonates
• Polyesters
• Polyethylenes
• Polymem
• Polyurethanes
• Silver
• 2-acrylamido-2-methylpropanesulfonate
• Glycerol
• Silver Sulfadiazine

Topics

• Acrylamides (pharmacology)
• Alkanesulfonates (pharmacology)
• Bandages, Hydrocolloid
• Burns (therapy)
• Cell Survival (drug effects)
• Fibroblasts (drug effects)
• Glycerol (pharmacology)
• Humans
• Keratinocytes (drug effects)
• Metal Nanoparticles
• Polyesters (pharmacology)
• Polyethylenes (pharmacology)
• Polyurethanes (pharmacology)
• Silver (pharmacology)
• Silver Sulfadiazine (pharmacology)