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Erschienen in: Lasers in Medical Science 1/2024

01.12.2024 | Original Article

Effect of photobiomodulation therapy on the morphology, intracellular calcium concentration, free radical generation, apoptosis and necrosis of human mesenchymal stem cells—an in vitro study

verfasst von: Kamila Pasternak-Mnich, Aleksandra Szwed-Georgiou, Barbara Ziemba, Ireneusz Pieszyński, Maria Bryszewska, Jolanta Kujawa

Erschienen in: Lasers in Medical Science | Ausgabe 1/2024

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Abstract

The aim of the study was to investigate the impact of multiwave locked system (MLS M1) emitting synchronized laser radiation at 2 wavelength simultaneous (λ = 808 nm, λ = 905 nm) on the mesenchymal stem cells (MSCs). Human MSCs were exposed to MLS M1 system laser radiation with the power density 195–318 mW/cm2 and doses of energy 3–20 J, in continuous wave emission (CW) or pulsed emission (PE). After irradiation exposure in doses of energy 3 J, 10 J (CW, ƒ = 1000 Hz), and 20 J (ƒ = 2000 Hz), increased proliferation of MSCs was observed. Significant reduction of Fluo-4 Direct™ Ca2+ indicator fluorescence over controls after CW and PE with 3 J, 10 J, and 20 J was noticed. A decrease in fluorescence intensity after the application of radiation with a frequency of 2000 Hz in doses of 3 J, 10 J, and 20 J was observed. In contrary, an increase in DCF fluorescence intensity after irradiation with laser radiation of 3 J, 10 J, and 20 J (CW, ƒ = 1000 Hz and ƒ = 2000 Hz) was also shown. Laser irradiation at a dose of 20 J, emitted at 1000 Hz and 2000 Hz, and 3 J emitted at a frequency of 2000 Hz caused a statistically significant loss of MSC viability. The applied photobiomodulation therapy induced a strong pro-apoptotic effect dependent on the laser irradiation exposure time, while the application of a sufficiently high-energy dose and frequency with a sufficiently long exposure time significantly increased intracellular calcium ion concentration and free radical production by MSCs.
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Metadaten
Titel
Effect of photobiomodulation therapy on the morphology, intracellular calcium concentration, free radical generation, apoptosis and necrosis of human mesenchymal stem cells—an in vitro study
verfasst von
Kamila Pasternak-Mnich
Aleksandra Szwed-Georgiou
Barbara Ziemba
Ireneusz Pieszyński
Maria Bryszewska
Jolanta Kujawa
Publikationsdatum
01.12.2024
Verlag
Springer London
Erschienen in
Lasers in Medical Science / Ausgabe 1/2024
Print ISSN: 0268-8921
Elektronische ISSN: 1435-604X
DOI
https://doi.org/10.1007/s10103-024-04008-z

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