Cephamycin cefoxitin, highly similar to cepahlosporins, presented better activity with a susceptibility rate of 56% (n = 77).
Further more, other mechanisms of
cephamycin resistance (e.g.
Confirmatory tests that detect
cephamycin hydrolysis include the Amp-C disk test and the three-dimensional test.
AmpC AY-lactamases are resistant to aminopenicillins carboxypenicillins ureidopenicillins cephalosporins broad as well as extended spectrum cephalosporins (
cephamycin) and monobactams (aztreonam).23 AmpC AY-lactamases are resistant to AY-lactamase inhibitors like clavulanic acid.4 E.
[beta]-Lactam antibiotics are frequently used for Agrobacterium eradication in plant tissues, they are penicillin, cephalosporin,
cephamycin, oxacephem, monobactam and carbapenem, and are currently being developed to improve and enlarge antibacterial activity (Demain and Elander, 1999).
CLSI mandates reporting methieillin-/oxacillin-resistant staphylococci resistant to all beta-lactam drugs--penicillins, cephalosporins,
cephamycin, and beta-lactam/beta-lactam inhibitors and carbapenems.
Other successful preventive infection-control measures include strict hand washing and restricted use of cephalosporin and
cephamycin antibiotics that promote resistance in Acinetobacter [22].
Cephamycin resistance in clinical isolates and laboratory-derived strains of Escherichia coli, Nova Scotia, Canada.
ESBLs are plasmid-mediated [beta]-lactamases that are capable of efficiently hydrolyzing penicillin, narrow and broad-spectrum cephalosporins and monobactams (aztreonam), but they do not hydrolyse
cephamycin or carbapenems (imipenem, meropenem).
Even though the
cephamycin antibiotics--cefotetan, cefmetazole, and cefoxitin--may appear to test susceptible, their usefulness in treating serious infections with ES[beta]L producers is unclear.