% IMPORTANT: The following is UTF-8 encoded. This means that in the presence % of non-ASCII characters, it will not work with BibTeX 0.99 or older. % Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or % “biber”. @INPROCEEDINGS{Unverricht:841298, author = {Unverricht, Marcus and Giesen, Ulrich and Kriehuber, Ralf}, title = {{F}lowcytometrical analysis of radiation-induced γ-{H}2{AX} foci}, reportid = {FZJ-2017-08388}, year = {2009}, abstract = {PURPOSE: Phosphorylation of histone H2AX (γ-H2AX) occurs at sites flanking DNA double-strand breaks (DSBs) and can provide a measure of the number of DSBs within a cell (γ-H2AX-assay). We investigated whether the mean intensity and the mean number of radiation-induced γ-H2AX foci vary as a function of radiation quality and dose.MATERIALS AND METHODS: Jurkat cells were irradiated with different doses of either low linear energy transfer (LET) 137Cs γ-rays or high LET 241Am α-particles. The γ-H2AX foci were detected using immunocytochemistry (primary antibody Anti-phospho-Histone H2AX(Ser139) mouse IgG, secondary antibody FITC goat anti-mouse IgG) and quantified by counting the number of γ-H2AX foci employing fluorescence microscopy and by measuring the mean signal intensity in single cell nuclei by flow cytometry. RESULTS: The mean number of γ-H2AX foci is increased in a dose dependent manner for both radiation qualities and are broadly similar at identical absorbed radiation dose for both investigated radiation qualities. The mean γ-H2AX signal intensity of single nuclei is increased after alpha-irradiation when compared to γ-irradiation at the same absorbed radiation dose. CONCLUSIONS: α-particle induced γ-H2AX foci show higher signal intensities compared to γ-ray-induced γ-H2AX foci. The mean intensity of radiation-induced γ-H2AX foci is dependent on radiation quality in Jurkat cells.}, month = {Oct}, date = {2009-10-14}, organization = {19th Annual Conference of the German Society for Cytometry, Leipzig (Germany), 14 Oct 2009 - 16 Oct 2009}, subtyp = {After Call}, cin = {S-US}, cid = {I:(DE-Juel1)S-US-20090406}, pnm = {899 - ohne Topic (POF3-899)}, pid = {G:(DE-HGF)POF3-899}, typ = {PUB:(DE-HGF)24}, url = {https://juser.fz-juelich.de/record/841298}, }