Activity of antimicrobial-impregnated silicone tissue expanders

Rabih O. Darouiche, David T. Netscher, Mohammad D. Mansouri, Ricardo Meade

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


Because bacterial colonization of medical devices may result in clinical infection, it is conceivable that antimicrobial impregnation of tissue expanders may reduce the rate of infection. The objective of this in vitro study was to examine the spectrum, durability, and shelf-life antimicrobial activity of minocycline/ rifampin-impregnated silicone tissue expander shells. The impregnated devices exhibited zones of inhibition at baseline against Staphylococcus epidermidis, Staphylococcus aureus, and Escherichia coli. The impregnated devices exhibited strong residual activity against S. epidermidis and S. aureus after suspension in serum at 37°C for 4 weeks. There was no significant decrease in the size of zones of inhibition after storing the impregnated devices at room temperature for 1 year. These results indicate that minocycline/rifampin-impregnated tissue expander shells provide broad-spectrum and durable antimicrobial activity and that the shelf-life antimicrobial activity exceeds 1 year. These findings prompt future exploration of the anti-infective efficacy of these antimicrobial-impregnated devices.

Original languageEnglish (US)
Pages (from-to)567-571
Number of pages5
JournalAnnals of plastic surgery
Issue number6
StatePublished - Dec 1 2002

ASJC Scopus subject areas

  • Surgery


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