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@BOOK{Turtoi:811468,
author = {Turtoi, Andrei},
title = {{U}ntersuchung frühzeitiger {R}eaktionen lymphozytärer
{P}roteine auf {G}amma-{B}estrahlung humanen {V}ollbluts und
deren {D}osisabhängigkeit: {V}oraussetzung für die
{E}ntwicklung eines individuellen strahlenbiologischen
{D}osimeters},
volume = {40},
address = {Jülich},
publisher = {Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag},
reportid = {FZJ-2016-03939},
isbn = {978-3-89336-502-9},
series = {Schriften des Forschungszentrums Jülich. Reihe
Lebenswissenschaften / Life Sciences},
pages = {97 S.},
year = {2007},
abstract = {The present thesis is concerned with the issues involved in
obtaining reliable experimental data permitting a
retrospective assessment of radiation-induced doses at the
time of application or contamination. In order to provide
prompt medical treatment of those injured in accidents with
ionizing radiation, biological procedures that can be
implemented swiftly and at an early stage are required both
to determine the radiation dose originally received as well
as to assess the course of the dosedependent biological
reactions on the basis of individual sensitivity to
radiation. To this end, in the present thesis the lymphocyte
proteins (phosphoproteins and total proteins) in blood taken
from test subjects who had been exposed to
$\gamma$-radiation (applied dose: 0-4 Gy) were analysed just
15 minutes after completing irradiation by means of 2D gel
electrophoresis. Only those early-response proteins (ERPROs)
that displayed a significant radiation-induced change were
identified by nano-HPLC-MS/MS. For validation purposes, the
dose-dependent gene expression of some of these proteins was
determined by RT-qPCR. The following ERPROs displayed
pronounced early reactions in the form of changes of
concentration in comparison to unirradiated control samples:
talin-1, talin-2, $\beta$-actin, mutant $\beta$-actin,
peroxin-1 and also the phosphoproteins annexin-A6,
MHC-binding protein-2, zyxin-2, interleukin-17E and
phosphoglycerate kinase-1. The majority of the lymphocyte
ERPROs represent proteins responsible for changes to the
cytoskeleton, proliferation and cell cycle, modulation of
immunoreactions as well as protein degradation and energy
production. Other cellular processes may not have been
determined due to the sensitivity restrictions of the
2D-PAGE and MS methods, but cannot be excluded. Gene
expression studies revealed that a combination of methods,
comprising RT-qPCR and 2D-PAGE as well as DNA microarray and
Western blot, may in future be able to overcome these
restrictions. The slopes of the curves from concentration
measurements of various early response proteins after doses
had been applied in the 0 and 4 Gy range yielded a
characteristic arrangement or pattern representative of an
individual. In case of contamination, this pattern prepared
ex vivo serves as a reference for identifying the originally
unknown dose, thus creating the necessary condition for
applying an individual radiation biodosimeter . This thus
provides for the first time an experimental means of
biologically quantifying in retrospect radioactive doses in
the 0 and 4 Gy range after a relatively short time.},
cin = {S-A},
cid = {I:(DE-Juel1)S-A-20090406},
pnm = {899 - ohne Topic (POF3-899)},
pid = {G:(DE-HGF)POF3-899},
typ = {PUB:(DE-HGF)3},
url = {https://juser.fz-juelich.de/record/811468},
}