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Oxidative stress involved in the antibacterial action of different antibiotics.

Abstract：

:Staphylococcus aureus and Escherichia coli sensitive to chloramphenicol incubated with this antibiotic suffered oxidative stress with increase of anion superoxide (O2-). This reactive species of oxygen was detected by chemiluminescence with lucigenin. S. aureus, E. coli, and Enterococcus faecalis sensitive to ciprofloxacin exhibited oxidative stress when they were incubated with this antibiotic while resistant strains did not show stimuli of O2-. Other bacteria investigated was Pseudomonas aeruginosa, strains sensitive to ceftazidime and piperacillin presented oxidative stress in presence of these antibiotics while resistant strains were not stressed. Higher antibiotic concentration was necessary to augment O2- in P. aeruginosa biofilm than in suspension, moreover old biofilms were resistant to oxidative stress caused by antibiotics. A ceftazidime-sensitive mutant of P. aeruginosa, coming from a resistant strain, exhibited higher production of O2- than wild type in presence of this antibiotic. There was relation between antibiotic susceptibility and production of oxidative stress.

journal_name

Biochem Biophys Res Commun

journal_title

Biochemical and biophysical research communications

authors

Albesa I,Becerra MC,Battán PC,Páez PL

doi

10.1016/j.bbrc.2004.03.085

subject

Has Abstract

pub_date

2004-04-30 00:00:00

pages

605-9

issue

2

eissn

0006-291X

issn

1090-2104

pii

S0006291X04005789

journal_volume

317

pub_type

杂志文章

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