Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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    Salmonella subtypes with increased MICs for Azithromycin in travelers returned to the Netherlands.
    Hassing, R.J. ; Goessens, W.H. ; Pelt, W. van; Mevius, D.J. ; Stricker, B.H. ; Molhoek, W.M.L. ; Verbon, A. ; Genderen, P.J. - \ 2014
    Emerging Infectious Diseases 20 (2014)4. - ISSN 1080-6040 - p. 705 - 708.
    uncomplicated typhoid-fever - in-vitro activity - enteric fever - multidrug-resistant - ciprofloxacin - trial - susceptibility - ofloxacin - paratyphi - india
    Antimicrobial susceptibility was analyzed for 354 typhoidal Salmonella isolates collected during 1999-2012 in the Netherlands. In 16.1% of all isolates and in 23.8% of all isolates that showed increased MICs for ciprofloxacin, the MIC for azithromycin was increased. This resistance may complicate empirical treatment of enteric fever.
    Decreased ciprofloxacin susceptibility in Salmonella Typhi and Paratyphi infections in ill-returned travellers: the impact on clinical outcome and future treatment options
    Hassing, R.J. ; Goessens, W.H. ; Mevius, D.J. ; Pelt, W. van; Mouton, J.W. ; Verbon, A. ; Genderen, P.J. - \ 2013
    European Journal of Clinical Microbiology and Infectious Diseases 32 (2013)10. - ISSN 0934-9723 - p. 1295 - 1301.
    enterica serotype typhi - beta-lactamase - fever - pharmacokinetics - pharmacodynamics - reevaluation - multicenter - breakpoints - resistant - nepal
    The emergence of decreased ciprofloxacin susceptibility (DCS) in Salmonella enterica serovar Typhi and serovar Paratyphi A, B or C limits treatment options. We studied the impact of DCS isolates on the fate of travellers returning with enteric fever and possible alternative treatment options. We evaluated the clinical features, susceptibility data and efficacy of empirical treatment in patients with positive blood cultures of a DCS isolate compared to patients infected with a ciprofloxacin-susceptible (CS) isolate in the period from January 2002 to August 2008. In addition, the pharmacokinetic and pharmacodynamic parameters of ciprofloxacin, levofloxacin and gatifloxacin were determined to assess if increasing the dose would result in adequate unbound fraction of the drug 24-h area under the concentration-time curve/minimum inhibitory concentration (ƒAUC(0-24)/MIC) ratio. Patients with DCS more often returned from the Indian subcontinent and had a longer fever clearance time and length of hospital stay compared to patients in whom the initial empirical therapy was adequate. The mean ƒAUC(0-24)/MIC was 41.3¿±¿18.8 in the patients with DCS and 585.4¿±¿219 in patients with a CS isolate. For DCS isolates, the mean ƒAUC0-24/MIC for levofloxacin was 60.5¿±¿28.7 and for gatifloxacin, it was 97.9¿±¿28.0. Increasing the dose to an adequate ƒAUC(0-24)/MIC ratio will lead to conceivably toxic drug levels in 50% of the patients treated with ciprofloxacin. Emerging DCS isolates has led to the failure of empirical treatment in ill-returned travellers. We demonstrated that, in some cases, an adequate ƒAUC(0-24)/MIC ratio could be achieved by increasing the dose of ciprofloxacin or by the use of alternative fluoroquinolones.
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