Cytotoxicity to cultured human keratinocytes of topical antimicrobial agents
- PMID: 2314091
- DOI: 10.1016/0022-4804(90)90212-k
Cytotoxicity to cultured human keratinocytes of topical antimicrobial agents
Abstract
Cultured skin grafts administered clinically for closure of burn wounds may be contacted by topically applied antimicrobial agents. A study was performed to assess whether commonly used topical antimicrobial agents are toxic to cultured human keratinocytes (HK) in vitro. Serum-free MCDB 153 culture medium containing Neosporin G.U. irrigant (Neomycin, 40 micrograms/ml-polymyxin B sulfate, 200 units/ml) and a standard tissue culture antimicrobial agent of penicillin (10,000 units/ml)-streptomycin (10,000 micrograms/ml)-amphotericin B (25 micrograms/ml) had no effect on the keratinocyte growth rates when compared to standard MCDB 153 medium without antibiotics. Medium containing Sulfamylon (mafenide acetate, 0.85%), Polysporin (polymyxin B sulfate, 1 x 10(4) units/ml-bacitracin, 500 units/ml), gentamicin sulfate (0.1%), modified Dakins solution (25%), and acetic acid (0.25%) all showed statistically significant (P less than 0.01) decreases in keratinocyte growth rates. This data suggests that commonly applied antimicrobials may not be appropriate for cultured grafts in the concentrations that are used clinically.
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