アズトレオナム

説明Aztreonam is the first member of the monobactam class of antibiotics to be introduced into the world market. It possesses high β-lactamase stability and moderately good activity against gram negative aerobes such as E. coli, S. marcescens, -9 Proteus Providencia, Salmonella, g. influenzae, E. gonorrhea, and &. pneumonia. While somewhat less potent against Pseudomonas aeruginosa, it is nonetheless one of the better β-lactams against this species. It has poor activity against gram positive organisms.

来歴Aztreonam was synthesized by the Squibb Institute for Medical Research in 1981 starting with l-threonine. The synthesis was based on findings about bacterial β-lactam compounds of a monocyclic nature . The β-lactam compounds, called monobactams, were isolated from Chromobacterium violaceum, Agrobacterium radiobacter, etc. Such monocyclic βlactams of bacterial origin had previously been found independently in 1981 by Takeda Chemicals Industries in the culture broths of Pseudomonas acidophila and P. mesoacidophila and named sulfazecin and isosulfazecin, respectively. Aztreonam was selected from among hundreds of derivatives as a candidate for clinical trials because of its unique antibacterial spectrum and strong activity. This antibiotic shows excellent activity against a variety of gram-negative aerobic bacteria but no activity against gram-positive bacteria or anaerobes. Its efficacy and safety are now being clinically evaluated.

使用Aztreonam is a synthetic β-lactam antibiotic of the monobactam class. It is effective against Gram-negative bacteria but inactive against Gram-positive bacteria. Its mechanism of action involves the inhibition of mucopeptide synthesis in the bacterial cell wall, thereby blocking peptidoglycan crosslinking. Aztreonam is resistant to hydrolysis by some β-lactamases, but is inactivated by extended-spectrum β-lactamases.