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Irinotecan and its active metabolite, SN‐38: review of bioanalytical methods and recent update from clinical pharmacology perspectives
Author(s) -
Ramesh Mullangi,
Ahlawat Preeti,
Srinivas Nuggehally R.
Publication year - 2010
Publication title -
biomedical chromatography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 65
eISSN - 1099-0801
pISSN - 0269-3879
DOI - 10.1002/bmc.1345
Subject(s) - irinotecan , sn 38 , active metabolite , bioanalysis , pharmacology , pharmacokinetics , chemistry , metabolite , camptothecin , topoisomerase , drug , physiologically based pharmacokinetic modelling , medicine , cancer , chromatography , in vitro , biochemistry , colorectal cancer
The introduction of irinotecan has revolutionized the applicability of camptothecins as predominant topoisomerase I inhibitor for anti‐cancer therapy. The potent anti‐tumor activity of irinotecan is due to rapid formation of an in vivo active metabolite, SN‐38. Therefore, irinotecan is considered as a pro‐drug to generate SN‐38. Over the past decade, side‐by‐side with the clinical advancement of the use of irinotecan in the oncology field, a plethora of bioanalytical methods have been published to quantify irinotecan, SN‐38 and other metabolites. Because of the availability of HPLC, LC‐MS and LC‐MS/MS methods, the pharmacokinetic profiling of irinotecan and its metabolites has been accomplished in multiple species, including cancer patients. The developed assays continue to find use in the optimization of newly designed delivery systems with regard to pharmacokinetics to promote safe and effective use of either irinotecan or SN‐38. This review intends to: firstly, provide an exhaustive compilation of the published assays for irinotecan, SN‐38 and other metabolite(s) of irinotecan, as applicable; secondly, to enumerate the validation parameters and applicable conclusions; and thirdly, provide some recent perspectives in the clinical pharmacology arena pertaining to efflux transporters, pediatric profiling, role of kidney function in defining toxicity, drug–drug interaction potential of irinotecan, etc. Copyright © 2009 John Wiley & Sons, Ltd.

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