The properties of 100 erythromycin resistant strains of Staphylococcus aureus obtained from clinical material have been compared with the properties of mutants selected in vitro for resistance to erythromycin. The properties, including inducibility of the resistance and cross-resistance to spiramycin and lincomycin, of the two groups of isolates were always different. The risk that staphylococc...

OBJECTIVES Congenital toxoplasmosis is a particular manifestation of Toxoplasma gondii infection, which may present as a mild or severe neonatal disease. This pathology remains a difficult challenge in terms of therapy for the pediatrician and gynecologist. In this article we have set ourselves the objective to provide an overview of the main aspects of the disease, with particular attention to...

Introduction The treatment of gonorrhoea in Denmark is as yet no serious therapeutic problem, as the majority of gonococcal infections can be cured by penicillin. Nevertheless, in an increasing number ofcases a higher dosage of penicillin is required than was the case just a few years ago. At the Dermato-venereological Department of the University Hospital, a single treatment dose of 300,000 un...

The acidity constants of eight macrolides (erythromycin, roxithromycin, oleandomycin, azithromycin, josamycin, tylosin tartrate, tilmicosin and spiramycin) have been determined in acetonitrile-water binary mixtures (30%, 40% and 50% (v/v)) by spectrophotometric method. The pKa's available in literature determined by various methods are compiled in comparison with the value of this work. These r...

While accessing to the European Union the Republic of Finland obtained a derogation enabling it to maintain the ban on its territory of the use of tylosin and spiramycin as feed additives. According to the Treaty of Accession, Finland was due to provide its request for adaptation of Community legislation before 31 December 1997, which should be accompanied by a detailed scientific statement of ...

While antibiotic pollution has attracted considerable attention due to its potential in promoting the dissemination of antibiotic resistance genes in the environment, the antibiotic activity of their related substances has been neglected, which may underestimate the environmental impacts of antibiotic wastewater discharge. In this study, a real-time quantitative approach was established to eval...

A simple and reliable method using liquid chromatography-electrospray ionization-mass spectrometry (LC/ESI-MS) has been developed for the determination of the macrolide antibiotics spiramycin and tilmicosin in meat and fish. The drugs were extracted from meat and fish with 0.2% metaphosphoric acid-methanol (6:4), and the extracts were cleaned up on an Oasis HLB cartridge (60 mg). Positive ioniz...