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1 Challenges of Modern Technology

1 2010

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Photodynamic therapy procedures in the microfluidic system

Jędrych E., Pawlicka Z., Chudy M., Dybko A., Brzózka Z.

Challenges of Modern Technology

2010

Vol. 1, no. 1

30--33

Evaluation of the effi ciency of photodynamic therapy (PDT) in a hybrid microfl uidic culture system was studied. The geometry of the utilized microsystem for PDT procedures consists microchambers for cell culture and microchannels, which create a concentration gradient generator (CGG). 5-aminolevulinic acid (ALA) as a precursor of the photosensitizer was used. The geometry of the microchip allowed to test diff erent concentrations of ALA in a single assay. Evaluation of the effi ciency of photodynamic therapy was determined 24 hours after PDT procedure (irradiation with light which induced accumulated in carcinoma cells). The performed microsystem contained two independent micropatterns, that enables examination simultaneously various cell lines (carcinoma and normal) or various photosensitizers.