LED illumination effects on proliferation and survival of meningioma cellular cultures
2010
Meningioma cell cultures were prepared from frozen cell samples in 96 wells culture plates. Semiconductor light sources
(LED) in seven different wavelength ranges were used to illuminate the wells, three different irradiation doses were
selected per LED. Control cultures using three different concentrations of FBS were processed for comparison. Cell
proliferation, viability, and cytotoxicity were measured every 24 hours for 6 days, using the XTT colorimetric assay
(Roche R ). None of the irradiated cultures exhibit cytotoxicity; but some of them exhibit proliferation inhibition. The
larger proliferation was detected at a 0.05J/cm 2 dose, for all LEDs; but for the orange and violet LEDs generated the
bigger proliferation rate was measured. Results show the improvement of meningioma cell proliferation using
illumination in some given wavelength ranges.
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