title: [In vitro antibacterial activity of cefpirome: a new cephalosporin; results of a multicenter study].
abstract: The in vitro activity of cefpirome, a new injectable cephalosporin was studied against 1,082 clinical isolates in a multicentre study. Minimum inhibitory concentrations were determined using an agar dilution method. Cefpirome was active against Enterobacteriaceae. On naturally non-producing beta-lactamase species, cefpirome was active on most of the strains with MICs < or = 0.5 mg/l, including strains producing an acquired penicillinase: E. coli 0.03-0.06, P. mirabilis 0.06-0.12, Salmonella spp. 0.06-0.06, Shigella spp. 0.016-0.03. MICs of K. pneumoniae (0.06-4) ranged from 0.016 to 32:MICs were high against expanded-spectrum betalactamase producers strains. Against species producing cephalosporinase, cefpirome was also active on most of the strains with MICs < or = 0.5: E. cloacae 0.06-2, Citrobacter spp. 0.03-1, S. marcescens 0.06-0.5, P. indol + 0.06-0.25, P. stuartii 0.12-0.5. Cefpirome was less active on Pseudomonas aeruginosa, (8-32) and on A. baumanii (16-32). MICs of cefpirome were low against Haemophilus spp. betalactamase producing or not (0.01-0.03) and M. catarrhalis (0.6-4). Activity of cefpirome on methicillin-sensitive staphylococci, was higher than other third generation cephalosporins (0.25-2) comparable to that of cephalotin and cefamandol. Methicillin-resistant strains should be considered as resistant. Pneumococci (0.01-0.03), except for penicillin-R strains, and streptococci A, B, C, G (0.01-0.06) were very susceptible. Enterococci were of low sensitivity or resistant. Among anaerobes, C. perfringens appeared often susceptible, and Bacteroides spp. resistant.
authors.affiliation: Service de Bactériologie, Hôpital Henri Mondor, Créteil, France.
authors.forename: C J
authors.initials: CJ
authors.lastname: Soussy
authors.forename: M
authors.initials: M
authors.lastname: Chanal
authors.forename: E
authors.initials: E
authors.lastname: Derlot
authors.forename: F
authors.initials: F
authors.lastname: Goldstein
authors.forename: J
authors.initials: J
authors.lastname: Duval
mesh_terms: D002511:Cephalosporins / Q000494:pharmacology*; D004305:Dose-Response Relationship, Drug; D004755:Enterobacteriaceae / Q000187:drug effects*; D006088:Gram-Negative Aerobic Bacteria / Q000187:drug effects*; D006094:Gram-Positive Bacteria / Q000187:drug effects*; D006190:Haemophilus / Q000187:drug effects; D066298:In Vitro Techniques; D001936:Moraxella catarrhalis / Q000187:drug effects; D000097572:Cefpirome
chemical_list: D002511:Cephalosporins; D000097572:Cefpirome
vernacular_title: Activité antibactérienne in vitro d'une nouvelle céphalosporine, le cefpirome: résultats d'une étude multicentrique.