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Ceftolozane exerts bactericidal activities against susceptible gram-negative and gram-positive infections by inhibiting essential penicillin-binding proteins (PBPs), which are required for peptidoglycan cross-linking for bacterial cell wall synthesis, resulting in inhibition of cell wall synthesis and subsequent cell death.
Gram-positive: They are extended-spectrum agents with similar activity against Gram-positive organisms as first-generation cephalosporins. [ citation needed ] Gram-negative: Fourth-generation cephalosporins are zwitterions that can penetrate the outer membrane of Gram-negative bacteria. [ 32 ]
Ceftaroline fosamil / s ɛ f ˈ t ær oʊ l iː n /, brand name Teflaro in the US and Zinforo in Europe, [1] [2] is a cephalosporin antibiotic with anti-MRSA activity. [3] Ceftaroline fosamil is a prodrug of ceftaroline. It is active against methicillin-resistant Staphylococcus aureus (MRSA) and other Gram-positive bacteria.
The basic structure of first generation cephalosporins. First generation cephalosporins were the first cephalosporins on the market. They have good antimicrobial activity against gram-positive bacteria but limited activity against gram-negative species. [25] The chemical structures of the first generation cephalosporins are fairly simple.
The main classes of β-lactam antibiotics used to treat gram-negative bacterial infections include (in approximate order of intrinsic resistance to cleavage by β-lactamases) penicillins (especially aminopenicillins and ureidopenicillins), 3rd generation cephalosporins, and carbapenems.
Cephalosporins penetrate the cerebrospinal fluid poorly unless the meninges are inflamed; cefotaxime is a more suitable cephalosporin than cefaclor for infections of the central nervous system, e.g. meningitis. Cefaclor is active against many bacteria, including both Gram-negative and Gram-positive organisms. [citation needed]
Cefotaxime is an antibiotic used to treat several bacterial infections in humans, other animals, and plant tissue culture. [3] Specifically in humans it is used to treat joint infections, pelvic inflammatory disease, meningitis, pneumonia, urinary tract infections, sepsis, gonorrhea, and cellulitis. [3]
Ceftobiprole, sold under the brand name Zevtera among others, is a fifth-generation [7] cephalosporin antibacterial used for the treatment of hospital-acquired pneumonia (excluding ventilator-associated pneumonia) and community-acquired pneumonia. It is marketed by Basilea Pharmaceutica under the brand names Zevtera and Mabelio.