Interference of the Antimicrobial Peptide Lactoferricin B with the Action of Various Antibiotics against Escherichia coli and Staphylococcus aureus
SCANDINAVIAN JOURNAL OF INFECTIOUS DISEASES(2009)
摘要
The antimicrobial peptide, lactoferricin, can be generated upon gastric pepsin cleavage of lactoferrin. We have examined the interaction of lactoferricin of bovine origin, Lf-cin B, with the antibiotics penicillin G, vancomycin, gentamicin, colistin, D-cycloserine and erythromycin against E. coli ATCC 25922 and Staphylococcus aureus ATCC 25923. We demonstrated synergism between Lf-cin B and erythromycin against E. coli, and partial synergism between Lf-cin B and penicillin G, vancomycin and gentamicin against E. coli. Only penicillin G acted in partial synergism with Lf-cin B against S. aureus. Lf-cin a antagonized vancomycin and gentamicin against S. aureus in low concentration. We conclude that Lf-cin B mag facilitate the uptake of antibiotics across the cell envelope.
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