In vitro antibacterial activities of JNJ-Q2, a new broad-spectrum fluoroquinolone.

JNJ-Q2, a novel fluorinated 4-quinolone, was evaluated for its antibacterial potency by broth and agar microdilution MIC methods in studies focused on skin and respiratory tract pathogens, including strains exhibiting contemporary fluoroquinolone resistance phenotypes. Against a set of 118 recent clinical isolates of Streptococcus pneumoniae, including fluoroquinolone-resistant variants bearing multiple DNA topoisomerase target mutations, an MIC(90) value for JNJ-Q2 of 0.12 microg/ml was determined, indicating that it was 32-fold more potent than moxifloxacin.

Molecular characterisation of meticillin-resistant Staphylococcus aureus isolates from two ceftobiprole Phase 3 complicated skin and skin-structure infection clinical trials.

Meticillin-resistant Staphylococcus aureus (MRSA) isolates from two worldwide ceftobiprole Phase 3 clinical trials for the treatment of complicated skin and skin-structure infections were characterised by clonality, staphylococcal cassette chromosome mec (SCCmec) type and the presence of Panton-Valentine leukocidin (PVL). PVL was predominantly found in US isolates (196/231 vs. 13/110 non-US isolates).

In vitro activity of ceftobiprole against pathogens from two phase 3 clinical trials of complicated skin and skin structure infections.

In phase 3 clinical trials for ceftobiprole treatment of complicated skin and skin structure infections, 1,219 gram-positive and 276 gram-negative aerobic baseline pathogens were identified. Ceftobiprole inhibited all staphylococcal isolates, including methicillin-resistant strains, at MICs of View Article and Find Full Text PDF

Effects of metronidazole, tetracycline, and bismuth-metronidazole-tetracycline triple therapy in the Helicobacter pylori SS1 mouse model after 1 day of dosing: development of an H. pylori lead selection model.

We evaluated the effect of optimized doses and dosing schedules of metronidazole, tetracycline, and bismuth-metronidazole-tetracycline (BMT) triple therapy with only 1 day of dosing on Helicobacter pylori SS1 titers in a mouse model. A reduction of bacterial titers was observable with 22.5 and 112.