antibiotics
SusceptibilitySelect β-Lactam Combinations Exhibit Synergy against Mycobacterium abscessus In VitroMycobacterium abscessus is a nontuberculous mycobacterium that causes invasive pulmonary infections in patients with structural lung disease. M. abscessus is intrinsically resistant to several classes of antibiotics, and an increasing number of strains isolated from patients exhibit resistance to...
Mechanisms of Action: Physiological EffectsInhibition of Protein Secretion in Escherichia coli and Sub-MIC Effects of Arylomycin AntibioticsAt sufficient concentrations, antibiotics effectively eradicate many bacterial infections. However, during therapy, bacteria are unavoidably exposed to lower antibiotic concentrations, and sub-MIC exposure can result in a wide variety of other effects, including the induction of virulence, which can complicate therapy, or horizontal gene transfer (HGT), which can accelerate the spread of resistance genes.
Clinical TherapeuticsAntibiotics Stimulate Formation of Vesicles in Staphylococcus aureus in both Phage-Dependent and -Independent Fashions and via Different RoutesBacterial membrane vesicle research has so far focused mainly on Gram-negative bacteria. Only recently have Gram-positive bacteria been demonstrated to produce and release extracellular membrane vesicles (MVs) that contribute to bacterial virulence.
Clinical TherapeuticsMicrobiological Profile of Sarecycline, a Novel Targeted Spectrum Tetracycline for the Treatment of Acne VulgarisSarecycline is the first narrow-spectrum tetracycline-class antibiotic being developed for acne treatment. In addition to exhibiting activity against important skin/soft tissue pathogens, sarecycline exhibits targeted antibacterial activity against clinical isolates of Cutibacterium acnes.
PharmacologyImpact of Antibiotic Treatment on the Burden of Nasal Staphylococcus aureus among Hospitalized PatientsWe examined the impact of systemic antibiotics on the burden of nasal Staphylococcus aureus in hospitalized patients. Of 1,482 patients, 237 (16%) had nasal methicillin-susceptible S. aureus (MSSA) and 92 (6%) had nasal methicillin-resistant...
Mechanisms of Action: Physiological EffectsAntibiotic-Induced Dysbiosis Predicts Mortality in an Animal Model of Clostridium difficile InfectionAntibiotic disruption of the intestinal microbiota favors colonization by Clostridium difficile. Using a charcoal-based adsorbent to decrease intestinal antibiotic concentrations, we studied the relationship between antibiotic concentrations in feces and the intensity of dysbiosis and quantified the link between this intensity and mortality.
- Mechanisms of Action: Physiological EffectsCrystal Structures of Penicillin-Binding Protein D2 from Listeria monocytogenes and Structural Basis for Antibiotic Specificity
β-Lactam antibiotics that inhibit penicillin-binding proteins (PBPs) have been widely used in the treatment of bacterial infections. However, the molecular basis underlying the different inhibitory potencies of β-lactams against specific PBPs is not fully understood.
- Clinical TherapeuticsPopulation Pharmacokinetics and Safety of Solithromycin following Intravenous and Oral Administration in Infants, Children, and Adolescents
Solithromycin is a novel fluoroketolide antibiotic which was under investigation for the treatment of community-acquired bacterial pneumonia (CABP). A phase 1 study was performed to characterize the pharmacokinetics (PK) and safety of solithromycin in children.
- Mechanisms of Action: Physiological EffectsAccelerating Early Antituberculosis Drug Discovery by Creating Mycobacterial Indicator Strains That Predict Mode of Action
- Mechanisms of ResistanceImidazopyridine Compounds Inhibit Mycobacterial Growth by Depleting ATP Levels