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Apoptosis Time Window Induced by Cold Atmospheric Plasma:Comparison with Ionizing Radiation
In this study we evaluate apoptosis time window of primary fibroblasts treated with cold atmospheric plasma (CAP), power range 0.4–1.4 W, for 30 sec, using γ-H2AX phosphorylation assay and flow cytometry. In contrast to irradiation where maximum of γ-H2AX foci appeared 30 min after irradiation and apoptosis 24 h later irrespective of radiation dose, treatment with CAP (power of 0.4 and 0.6) induces maximum of γ-H2AX foci 2 h after treatment. Apoptosis occurred in a power-dependent manner, with time shift of 2–3 h. Besides power-dependent time shift in apoptosis induction, apoptosis time window is the same and lasts for 2 h.
Keywords
Apoptosis, Cold Atmospheric Plasma, Ionizing Radiation, Primary Human Fibroblasts, Repair Kinetics.
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