نتایج جستجو برای: ampicillin
تعداد نتایج: 7710 فیلتر نتایج به سال:
background: the antifertility effect of ampicillin (amp, 40 mg/kg) and sulphasalazine or salicylazosulfapyridine (sasp, 300,450 and 600 mg/kg) in male rats has been reported earlier. the combination of amp and sasp is generally used in certain pathological conditions, but the combined effect of these two drugs on the fertility is not clear. so, the aim of this study was to investigate the antif...
penicillin g acylase from e. coli ta1 was immobilized by cross-linked enzyme aggregates (clea), a new method for immobilization. this biocatalyst and commercial immobilized penicillin g acylase (pga-450) were used to study the effect of ph, temperature and substrate concentration on the synthesis of ampicillin from phenyl glycine methyl ester (pgme) and 6-aminopenicillanic acid (6-apa). compare...
The spectrophotometric and microbiological assay methods used for the determination of ampicillin levels in ampicillin/cloxacillin combinations were compared. A total of 24 samples of ampicillin/cloxacillin suspensions from 8 batches and 3 companies (B2, D and E) were assayed for their ampicillin content levels using the Spectrophotometric assay method. Infra-red (IR) Spectroscopy confirmed the...
The killing rate induced by ampicillin was determined in 20 strains of Escherichia coli. The apparent generation rate constant for each E. coli showed a characteristic concentration-dependent course. This course can be mathematically described and is determined by four parameters. Three of these parameters determine the speed of the process, and the fourth parameter determines a minimal concent...
the effect of 10 and 25 kgy ?-irradiation on penicillin g plus procaine and sodium ampicillin has been assessed by different chemical and microbiological analytical methods. according to the chemical results obtained, the antibiotics showed a slight reduction in doses applied but the microbiological assays revealed that the activity of irradiated antibiotics did not reduce. microbiological stud...
determination of drug resistance rate, as a new major problem in patients with typhoid fever is inevitable for treatment of the disease. in a cross-sectional study, during march 1994 till february 1995, a total of 39 patients with typhoid fever admitted to dept. of infections diseases, emam khomeini hospital, and were examined for the rate of resistance to routine drugs usually used for treatme...
Pivampicillin (PIVA), an acyloxymethylester of ampicillin, is thought to enhance the oral bioavailability of ampicillin because of its greater lipophilicity compared to that of ampicillin. The fate of PIVA in intestinal cells and the exact location of its conversion into ampicillin have, however, never been unambiguously established. Polarized Caco-2 cells have been used to examine the handling...
Ampicillin is a bactericidal antibiotic, it penetrates into the bacterial wall better than penicillin G and is active against gram-negative bacteria that are resistant to penicillin G. Ampicillin has a broad-spectrum antimicrobial activity and is the most widely used antibiotic for treating infections caused by Listeria, β-lactamase-negative Haemophilus, enterococci, Shigella, streptococci, Esc...
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