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@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},
}