Fosfomycin
生产企业：Zambon spa italy
Fosfomycin is a broad spectrum antibiotic used to treat uncomplicated urinary tract infections.
Fosfomycin is a broad spectrum antibiotic used to treat uncomplicated urinary tract infections.
Fosfomycin exerts its bactericidal effects by binding covalently to a cysteine in the active site of the UDP-N-acetylglucosamine enolpyruvyl transferase (MurA) enzyme, rendering it inactive. By preventing MurA from catalyzing the condensation of phosphoenolpyruvate (PEP) with UDP-N-acetylglucosamine (UNAG), fosfomycin inhibits the production of the peptidoglycan precursor UDP N-acetylmuramic acid (UDP-MurNAc). Ultimately, the first step of bacterial cell wall synthesis is disrupted. In Escherichia coli, fosfomycin gains entry into bacterial cells via two mechanisms: the L-alpha-glycerophosphate system and the hexose-6-phosphate transporter system. Fosfomycin also has important effects on cell adhesion. For example, the adhesion of bacterial cells to urinary epithelial cells is reduced in the presence of fosfomycin. The adhesion of Streptococcus pneumoniae and Haemophilus influenzae to respiratory epithelial cells is also reduced
Fosfomycin is indicated for the treatment of uncomplicated cases of cystitis caused by susceptible strains of Escherichia coli and Enterococcus faecalis. Fosfomycin is not officially indicated for the treatment of pyelonephritis or perinephric abscess, although there have been reported cases of off-label usage in these situations.
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