Methods: Isolates were cultured directly from porcine lung sections and positively identified as M. hyopneumoniae using an indirect-fluorescent antibody (IFA) method. A Sensititre® plate broth microdilution technique was used to determine the minimum inhibitory concentrations (MICs) of each of the antimicrobials. Inocula concentrations were determined by serial tenfold dilutions of the 14 M. hy...

The effect of combinations of gentamicin with trimethoprim or sulfamethoxazole-trimethoprim against clinical isolates of Escherichia coli (11 strains) and Klebsiella pneumoniae (12 strains) was examined by using a microdilution checkerboard technique. All isolates were susceptible to each antimicrobial agent. Synergism, defined as at least a 2-log(2)-dilution lowering of the minimal inhibitory ...

The study objective was to determine the in vitro activity of terbinafine and itraconazole through the microdilution technique in broth (NCCLSM27-A2), adapted for dimorphic fungus, in relation to 12 isolates of Sporothrix schenckii. Six were from feline sporotrichosis, three from human sporotrichosis, one from a dog and two from human isolates originating from Instituto Oswaldo Cruz. The inocul...

This work describes novel V2O5/ZnO hetero-structured nanomaterials providing efficient photocatalytic activities at different composite ratios (0.1:1, 1:1, 1:2, and 1:3, w/w). The nanocomposites were prepared by a facile physico-chemical synthesis using V2O5 with ZnO through high-energy ball miller technique. 1:1 ratio of nanohybrid composition material showed maximum potential (99.9% methylene...

AIMS To investigate the in vitro antifungal activity of the components of Melaleuca alternifolia (tea tree) oil. METHODS AND RESULTS Activity was investigated by broth microdilution and macrodilution, and time kill methods. Components showing the most activity, with minimum inhibitory concentrations and minimum fungicidal concentrations of < or =0.25%, were terpinen-4-ol, alpha-terpineol, lin...

BACKGROUND Enterobacteriaceae producing ESBL and AmpC enzymes can be associated with failure of antibiotic therapy and related morbidity and mortality. Their routine detection in microbiology laboratories is still a problem. The aim of this study was to compare the sensitivity of selected phenotypic methods. MATERIAL/METHODS A total of 106 strains of the Enterobacteriaceae family were tested,...

There is an increasing need for alternative agents in endocarditis, especially with the increasing incidence of vancomycin-intermediate Staphylococcus aureus (VISA). We evaluated the in vitro activity of daptomycin and several comparator agents against 33 non-duplicate clinical Staphylococcus aureus isolates from intravenous drug users with right endocarditis. Wider microdilution panels were us...

objective: amphotericin b (amb) is an ancient antifungal drug and proper for treatment of systemic fungal infection. unfortunately, this antibiotic has shown some side effects such as nephrotoxicity. therefore, recently new amb formulated has been prepared for reduced toxicity and increased effectiveness. materials and methods: amb nanocapsules prepared from polymers such as poly d, l-lactide-...

The MicroScan MICroSTREP panel is a recently marketed frozen broth microdilution panel for susceptibility testing of various streptococci, including Streptococcus pneumoniae. The panel contains 10 antimicrobial agents in cation-adjusted Mueller-Hinton broth supplemented with 3% lysed horse blood, similar in concept to the National Committee for Clinical Laboratory Standards (NCCLS) reference br...

The in vitro susceptibility of dermatophytes to the azole antifungals itraconazole, fluconazole and ketoconazole was evaluated by broth macro and microdilution methods, according to recommendations of the CLSI, with some adaptations. Twenty nail and skin clinical isolates, four of Trichophyton mentagrophytes and 16 of T. rubrum were selected for the tests. Itraconazole minimal inhibitory concen...