نتایج جستجو برای: penicillins
تعداد نتایج: 9407 فیلتر نتایج به سال:
چکیده ندارد.
beta-Lactamase I catalyses the hydrolysis of penicillins by an acyl-enzyme mechanism. A procedure was developed for determining the rate constants for the acylation and deacylation steps for the good substrates benzylpenicillin and phenoxymethylpenicillin; this depends on determining the fraction of enzyme that is present as acyl-enzyme in the steady state.
BACKGROUND Allergy to cephalosporins has mainly been evaluated in the context of patients with confirmed penicillin allergy. The problem of studying cross-reactivity in subjects primarily sensitized to cephalosporins and potentially allergic to penicillins has not been sufficiently addressed. OBJECTIVE To evaluate the in vitro IgE response and cross-reactivity to betalactams in patients with ...
Background and Objective: The global increase in resistance to antibiotics among clinical isolates of Acinetobacter baumannii is reported from several countries, but its true prevalence in Iran is less known. The objective of this study was determination of the frequency of resistance to different antibiotics among Acinetobacter baumannii isolated from patients in two hospitals in Tehran, Iran,...
The minimal inhibitory concentrations of 45 antimicrobial agents were determined for 14 strains of Bacterium actinomycetem comitans (Actinobacillus actinomycetem-comitans). All the strains showed good susceptibility to tetracyclines and chloramphenicol, but not to lincomycins. Some strains were clearly resistant to penicillins, cephalosporins, and nitroimidazoles. The lowest minimum inhibitory ...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید