1: J Antimicrob Chemother. 2008 Feb;61(2):235-7. Epub 2007 Dec 6.

Tissue concentrations: do we ever learn?

Mouton JW, Theuretzbacher U, Craig WA, Tulkens PM, Derendorf H, Cars O.

Department of Medical Microbiology and Infectious Diseases, Canisius Wilhelmina
Ziekenhuis, Nijmegen, The Netherlands. mouton@cwz.nl

Over the last decades, numerous papers have appeared--and still are
appearing--that describe concentrations in tissues in an effort to predict the
efficacy of an antimicrobial agent based on these concentrations and MICs for
microorganisms. A common method is to use measurements of concentrations in
tissue homogenates, comparing these with values derived from the corresponding
blood samples and on that basis draw conclusions with respect to the potential
clinical use of the drug. This approach is not justifiable for a number of
reasons that includes both pharmacokinetic as well as pharmacodynamic causes.
This way of presenting data with the derived conclusions is often misleading and 
may ultimately be harmful in patient care.

PMID: 18065413 [PubMed - in process]

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