The synergic effects of quinolones and oral cephem antibiotics on Serratia marcescens.

Quinolone resistance in clinical isolates of Serratia marcescens.

The uptakes of norfloxacin by quinolone-resistant and -susceptible strains of Serratia marcescens were almost the same and 50% inhibitory concentrations for DNA gyrase and the MICs of quinolones were correlated, suggesting that DNA gyrase alterations are the basis of quinolone resistance.

Serratia marcescens B4A Chitinase Product Optimization Using Taguchi Approach

Chitinase production by newly isolated Serratia marcescens B4A was optimized following Taguchi’sarray methods. Twenty-three bacterial isolates were screened from shrimp culture ponds in the South ofIran. A chitinase-producing bacterium was isolated based on it’s ability to utilize chitin as the sole carbonsource. The isolate designated as B4A, was identified as Serratia marces...

Effect of polymyxin B on the synthesis of prodigiosin and its precursors in Serratia marcescens.

Cefoxitin, a semisynthetic cephamycin antibiotic: antibacterial spectrum and resistance to hydrolysis by gram-negative beta-lactamases.

The in vitro activity of cefoxitin, 3-carbamolyloxymethyl-7-alpha-methoxy-7[2-(2-thienyl)acetamido]-3-cephem-4-carboyxlic acid, was investigated. Activity against gram-positive organisms was less than that of cephalothin and cephloridine. It was highly active against gram-negative bacilli, with activity against Escherichia coli, Proteus mirabilis, and Klebsiella pneumoniae equal to that of curr...

Antagonistic activities of some probiotic lactobacilli culture supernatant on Serratia marcescens swarming motility and antibiotic resistance

Background and Objectives Serratia marcescens, a potentially pathogenic bacterium, benefits from its swarming motility and resistance to antibiotic as two important virulence factors. Inappropriate use of antibiotics often results in drug resistance phenomenon in bacterial population. Use of probiotic bacteria has been recommended as partial replacement. In this study, we investigated the effec...