Microdialysis for assessing intratumoral drug disposition in brain cancers: a tool for rational drug development.

Abstract:

IMPORTANCE OF THE FIELD:many promising targeted agents and combination therapies are being investigated for brain cancer. However, the results from recent clinical trials have been disappointing. A better understanding of the disposition of drug in the brain early in drug development would facilitate appropriate channeling of new drugs into brain cancer clinical trials. AREAS COVERED IN THIS REVIEW:barriers to successful drug activity against brain cancer and issues affecting intratumoral drug concentrations are reviewed. The use of the microdialysis technique for extracellular fluid (ECF) sampling and its application to drug distribution studies in brain are reviewed using published literature from 1995 to the present. The benefits and limitations of microdialysis for performing neuorpharmacokinetic (nPK) and neuropharmacodynamic (nPD) studies are discussed. WHAT THE READER WILL GAIN:the reader will gain an appreciation of the challenges involved in identifying agents likely to have efficacy in brain cancer, an understanding of the general principles of microdialysis, and the power and limitations of using this technique in early drug development for brain cancer therapies. TAKE HOME MESSAGE:a major factor preventing efficacy of anti-brain cancer drugs is limited access to tumor. Intracerebral microdialysis allows sampling of drug in the brain ECF. The resulting nPK/nPD data can aid in the rational selection of drugs for investigation in brain tumor clinical trials.

authors

Blakeley J,Portnow J

doi

10.1517/17425255.2010.523420

subject

Has Abstract

pub_date

2010-12-01 00:00:00

pages

1477-91

issue

12

eissn

1742-5255

issn

1744-7607

journal_volume

6

pub_type

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