OBJECTIVE In this study, antimicrobial activities of an ethanol extract of Tribulus terrestris aloneand in combination with Capsella bursa-pastoris and Glycyrrhiza glabra were examined in vitro against six pathogens namely Streptococcus mutans, Streptococcus sanguis, Actinomyces viscosus, Enterococcus faecalis Staphylococcus aureus, and Escherichia coli. MATERIALS AND METHODS Antibacterial ac...

The NCCLS (2004) presented a new methodology to detect, by disk-diffusion agar, oxacillin-resistance using a cefoxitin disk. We identified coagulase-negative staphylococci (SCoN) to the species level and compared the use of cefoxitin disks (30 microg) with oxacillin disks (1 microg), agar dilution (minimum inhibitory concentration of oxacillin) and mecA gene detection in isolates of coagulase-n...

Ciprofloxacin was subjected to a multilaboratory study designed to determine its in vitro susceptibility criteria for Neisseria gonorrhoeae and its quality control parameters for both agar dilution and disk diffusion susceptibility testing for this species. All clinical isolates were susceptible, i.e., MICs were less than or equal to 0.06 microgram/ml and zones of inhibition were greater than o...

Sixty Pseudomonas aeruginosa isolates were tested by the agar disk diffusion, AMS Vitek GNS-V flex panel (Vitek Systems, Inc., Hazelwood, Mo.), and agar dilution methods. Although the results of aminoglycoside tests were satisfactory, those of piperacillin and cefoperazone by Vitek GNS-V (T2.05 program) were not acceptable.

We observed elevated MICs of penicillin antibiotics while performing agar dilution susceptibility testing of strains of Clostridium difficile on supplemented brain heart infusion agar, an effect which was completely eliminated by the exclusion of L-cysteine from the medium. L-Cysteine antagonizes the activity of penicillins against C. difficile, most likely by direct inactivation of the antibio...

s OBJECTIVES: The performance of the Phoenix system with regard to antimicrobial susceptibility testing (AST) for oxacillin of staphylococci, vancomycin of enterococci, and detection of extended spectrum beta-lactamases (ESBL) of Escherichia coli and Klebsiella spp. was evaluated. METHODS: A total of 278 staphylococci (117 Staphylococcus aureus, 161 coagulase negative staphylococci [CNS] were t...

The Micro-Media Systems (MMS) anaerobe susceptibility testing panel results from four laboratories were compared for interlaboratory and intralaboratory variations and for the results with the reference agar dilution and a broth microdilution method. The interlaboratory agreement was 98.0% and intralaboratory agreement was 97.3% (+/- 1 log2 dilution). When interpretive criteria for each antimic...

A number of antigens in unfertilized eggs and embryos of the sea urchin Paracentrotus lividus were characterized with respect to both immunological and physicochemical properties. Experiments involved single diffusion in agar (Oudin technique) combined with mutual dilution, serial dilution, and heating of antigenic extracts, as well as immunoelectrophoresis with normal and heated extracts and a...

Abstract In this study, antioxidant, oxidant, antimicrobial, and antiproliferative activities of Asparagus acutifolius L. officinalis L., known for their nutritional properties, were determined. context, methanol (MeOH) dichloromethane (DCM) extracts plants obtained. Total antioxidant status (TAS), total oxidant (TOS), oxidative stress index (OSI) determined using Rel Assay kits. Antimicrobial ...