Susceptibility of the "penicillinase-resistant" penicillins and cephalosporins to penicillinase of Staphylococcus aureus.
نویسندگان
چکیده
منابع مشابه
Susceptibility of the "penicillinase-resistant" penicillins and cephalosporins to penicillinase of Staphylococcus aureus.
The activities of some semisynthetic penicillins and cephalosporins have been tested against clinical strains of Staphylococcus aureus. The apparent activity in vitro varies with the method of testing used. Determination of MICs using light inocula fails to detect the destructive effect of penicillinase on the antibiotic. This was, however, demonstrated reproducibly by the use of a technique in...
متن کاملPenicillinase - resistant Penicillins and Cephalosporins
The discovery of penicillinase-resistant penicillins is an important landmark in the history of antibacterial chemotherapy. Methicillin came into clinical use in 1960, and its value in the treatment of penicillin-resistant staphylococcal infection is now well established. The same is true of the isoxazolyl penicillins, oxacillin and cloxacillin, which came on to the scenes about a year later. N...
متن کاملEffect of temperature on the in vitro susceptibility of Staphylococcus aureus to penicillinase-resistant penicillins.
Heteroresistant (methicillin-resistant) and nonheteroresistant strains of Staphylococcus aureus were tested for their susceptibility to penicillinase-resistant penicillins at incubation temperatures of 37, 35, and 30 C. Susceptibilities were determined by agar dilution and by the standard Kirby-Bauer agar diffusion tests. Minimal inhibitory concentrations were higher at 35 and 30 C than at 37 C...
متن کاملStability of penicillinase plasmids in Staphylococcus aureus.
The isolation of mutants of Staphylococcus aureus that are affected in the stability of penicillinase plasmids is described. One mutation is plasmid borne and results in nonreplication of the plasmid at 42 C. A second type of mutation is host-borne and gives rise to instability of both mcr(I) and mcr(II) penicillinase plasmids but not a tetracycline-resistant plasmid.
متن کاملPenicillinase-resistant Penicillins in the Treatment of Surgical Staphylococcal Infections.
although it has the advantage of being given orally, seems less effective, and ampicillin similarly. Comparative statistical evidence of the value of the various penicillins and of the antibiotics is not available, and would be difficult to obtain, but I have no personal doubt that at present in the acute infection methicillin and chloramphenical are the two most effective drugs. A major anxiet...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Clinical Pathology
سال: 1977
ISSN: 0021-9746
DOI: 10.1136/jcp.30.1.35