Publications by authors named "Michael Schleibinger"

Tigecycline, a tetracycline derivative, shows atypical plasma protein binding behavior. The unbound fraction decreases with increasing concentration at therapeutic concentrations. Moreover, uncertainty exists about the magnitude of tigecyline's protein binding in man.

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Background: Standard doses of linezolid may not be suitable for all patient groups. Intensive care unit (ICU) patients in particular may be at risk of inadequate concentrations. This study investigated variability of drug exposure and its potential sources in this population.

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Aims: The aim of the present study was to assess the pharmacokinetics of total and unbound ceftriaxone in intensive care unit (ICU) patients and its protein binding characteristics.

Methods: Twenty patients (m/f 15/5, age 25-86 years, body weight 60-121 kg, APACHE II 7-40, estimated glomerular filtration rate 19-157 ml min(-1) , albumin 11.7-30.

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Ultrafiltration is a rapid and convenient method to determine the free concentrations of drugs. In the present work, we aimed to develop an ultrafiltration method which is appropriate for routine determination of the free fraction of vancomycin and highly protein bound beta-lactams such as ertapenem, ceftriaxone and cefazolin in plasma from intensive care unit patients. Different filter types and experimental conditions (molecular weight cut-off, centrifugal force and time, pH, temperature) were evaluated and found to have influence on the result.

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