Development of an HPLC method for monitoring of Photofrin II therapy.

Abstract:

OBJECTIVES:To develop and to validate a method to quantify plasma porphyrins after application of Photofrin II, a drug preparation that is used for photodynamic therapy (PDT) and as a radiosensitizer. DESIGN AND METHODS:After solid phase extraction of postdose plasma samples, reversed phase high performance-liquid chromatography with fluorescence detection was performed. Plasma porphyrin concentrations were monitored in five patients that were treated with Photofrin II. RESULTS:The method proved linear over a wide concentration range, precise, and applicable in a routine clinical laboratory setting. CONCLUSIONS:The method described here will enable large-scale clinical pharmacokinetic studies on Photofrin II; investigations can now address possible correlations between individual concentrations of drug-derived plasma porphyrins and systemic photosensitivity--representing the main side effect of Photofrin II--with the perspective of individualized light protection regimens after Photofrin II administration.

journal_name

Clin Biochem

journal_title

Clinical biochemistry

authors

Vogeser M,Schaffer M,Egeler E,Spöhrer U

doi

10.1016/j.clinbiochem.2004.09.014

subject

Has Abstract

pub_date

2005-01-01 00:00:00

pages

73-8

issue

1

eissn

0009-9120

issn

1873-2933

pii

S0009-9120(04)00252-8

journal_volume

38

pub_type

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