Survey of antimicrobial resistance in lactic streptococci.
AUTOR(ES)
Orberg, P K
RESUMO
A total of 26 strains of Streptococcus cremoris and 12 strains of Streptococcus lactis were challenged with 18 antimicrobial agents and with nisin in the Bauer-Kirby disk susceptibility test. All strains were susceptible to ampicillin, bacitracin, cephalothin, chloramphenicol, chlortetracycline, erythromycin, penicillin G, tetracycline, and vancomycin. All strains were resistant to trimethoprim, and almost all strains were resistant to sulfathiazole. Variability in resistance to gentamicin, kanamycin, lincomycin, nafcillin, neomycin, nisin, rifampin, and streptomycin was observed. MICs of these substances for the less susceptible strains were determined, and high-level resistance factors could not be detected, except in the case of nisin. S. lactis ATCC 7962 was resistant to at least 40-fold-higher concentrations of nisin (greater than 64 micrograms/ml) than most other strains tested. This strain was a potent nisin producer.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=373544Documentos Relacionados
- Arginine metabolism in lactic streptococci.
- Development of high-level streptomycin resistance affected by a plasmid in lactic streptococci.
- In vitro antimicrobial inhibition patterns of nutritionally variant streptococci.
- Incidence and properties of temperate bacteriophages induced from lactic streptococci.
- Conjugal transfer and characterization of bacteriocin plasmids in group N (lactic acid) streptococci.