To analyse the occurrence and prevalence of plasmid-mediated quinolone resistance (PMQR) genes in the tribe Proteeae, 81 isolates (65 Proteus spp., 12 Morganella morganii and 4 Providencia stuartii) consecutively collected in 66 hospitals belonging to the WHONET-Argentina Resistance Surveillance Network were studied. Of the 81 isolates, 50 (62%) were susceptible to quinolones [43/65 (66%) Prote...

In previous papers (Y. Ikeda and T. Nishino, Antimicrob. Agents Chemother. 32:1073-1077, 1988; Y. Ikeda, T. Nishino, and T. Tanino, Antimicrob. Agents Chemother. 31:865-869, 1987), we reported that many of the 7-aminothiazolyl cephalosporins, such as cefmenoxime, showed paradoxically reduced activity against Proteus vulgaris at higher concentrations, whereas these paradoxical effects were not o...

Two Schiff bases were synthesized from raceacetophenone: 1) ADS1: 4-ethyl-6-{(E)-1-[(3-nitrophenyl)imino]ethyl}benzene-1,3-diol and 2) ADS3: 4-ethyl-6-{(E)-1-[(2-nitrophenyl)imino]ethyl}benzene-1,3-diol. Then their metal complexes were formed. The metals selected for the preparation of complexes were copper, nickel, iron and zinc. Hence, in total 8 metal complexes were synthesized and screened ...

Antibacterial and antioxidant activity, total phenolic and flavonoid concentrations of aqueous, ethanol and ethyl acetate extracts from the leaves and flowers of Erica herbacea L. were studied. In vitro antibacterial activity of the extracts was determined by macrodilution method. Minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) have been determined. Testing w...

The nature of association between Demodex mites and bacteria involved in bovine demodectic mange lesions and the normal flora inhabiting the skin of noninfected animals was investigated. Demodex bovis and D. ghanensis mites were isolated from the infected purulent material extracted from skin and meibomian gland lesions, respectively. The mites could not be demonstrated in skin brushings or imp...

For the past five years we have been engaged in an investigation of the effect of cobalt on the growth and metabolism of bacteria, especially of Proteus vulgaris. The emphasis on Proteus followed requests for aid in the control of growth of this penicillinand sulfa-resistant organism in cases of peritonitis, cystitis, and eye infections. Interest in cobalt as a growth inhibitor of microorganism...

Sir: There are numerous steps in bacterial cell wall synthesisll) but the compounds inhibiting this synthesis are limited. To this group of compounds, i. e. penicillins2), cephalosporins2), ristocetin6), vancomycin7), bacillin1^ moenomycin5), prasinomycin9), cycloserine10), O-carbamyl-D-serine10), glycine8), and damino acids3) can be added 1-aminoethylphosphonic acid (AEPA). When titrated again...

The antibacterial activity of leaf and root ethanolic extracts as well as crude alkaloids and flavonoids from both the parts of Rhus succedanea were carried against bacterial strains viz. Staphylococcus aureus, Clavibacter michiganensis, Proteus vulgaris and Xanthomonas spp. The antibacterial activity was carried out on nutrient agar medium using disk diffusion method. The flavonoid fraction of...