Repair of cellular radiation damage in space under microgravity conditions.

abstract：:The potential of proton microchannel radiotherapy to reduce radiation effects in the healthy tissue but to keep tumor control the same as in conventional proton therapy is further elucidated. The microchannels spread on their way to the tumor tissue resulting in different fractions of the healthy tissue covered with d...

journal_title：Radiation and environmental biophysics

authors： Girst S,Greubel C,Reindl J,Siebenwirth C,Zlobinskaya O,Dollinger G,Schmid TE

更新日期：2015-08-01 00:00:00

abstract：:Because of the increasing application of ionizing radiation in medicine, quantitative data on effects of low-dose radiation are needed to optimize radiation protection, particularly with respect to cataract development. Using mice as mammalian animal model, we applied a single dose of 0, 0.063, 0.125 and 0.5 Gy at 10 ...

journal_title：Radiation and environmental biophysics

authors： Dalke C,Neff F,Bains SK,Bright S,Lord D,Reitmeir P,Rößler U,Samaga D,Unger K,Braselmann H,Wagner F,Greiter M,Gomolka M,Hornhardt S,Kunze S,Kempf SJ,Garrett L,Hölter SM,Wurst W,Rosemann M,Azimzadeh O,Tapio S,Au

更新日期：2018-05-01 00:00:00

abstract：:Radiation is known to be carcinogenic to humans but attempts to demonstrate the process using human tissue culture models have met with little success. In the present study explants were established from urothelium and exposed to radiation and a range of chemical carcinogens, suspected promotor or metabolic agents. Th...

journal_title：Radiation and environmental biophysics

authors： Mothersill C,O'Brien A,Seymour CB

更新日期：1990-01-01 00:00:00

abstract：:Beginning in 1950, people living on the banks of the Techa River received chronic low-dose-rate internal and external radiation exposures as a result of releases from the Mayak nuclear weapons plutonium production facility in the Southern Urals region of the Russian Federation. The Techa River cohort includes about 30...

journal_title：Radiation and environmental biophysics

authors： Krestinina L,Preston DL,Davis FG,Epifanova S,Ostroumova E,Ron E,Akleyev A

更新日期：2010-05-01 00:00:00

abstract：:Time-dependent yields of the most important products of water radiolysis E(aq)(-), (*)OH, H(*), H(3)O(+), H(2), OH(-) and H(2)O(2) have been calculated for (60)Co-photons, electrons, protons, helium- and carbon-ions incident onto water. G values have been evaluated for the interval from 1 ps to 1 mus after initial ene...

journal_title：Radiation and environmental biophysics

authors： Kreipl MS,Friedland W,Paretzke HG

更新日期：2009-02-01 00:00:00

abstract：:Radiocaesium absorption and retention in reindeer (Rangifer tarandus) calves was compared in groups fed diets containing different proportions of lichen and concentrates, and different chemical forms of radiocaesium ((134)CsCl in solution or fallout from the Chernobyl accident). Daily intakes of fallout radiocaesium w...

journal_title：Radiation and environmental biophysics

authors： Skuterud L,Pedersen Ø,Staaland H,Røed KH,Salbu B,Liken A,Hove K

更新日期：2004-12-01 00:00:00

abstract：:A new device for the measurement of complete laser induced fluorescence emission spectra (maxima near 690 and 735 nm) of leaves during the induction of the chlorophyll fluorescence is described. In this the excitation light (cw He/Ne laser, 632.8 nm) is switched on by a fast electro-mechanical shutter which provides a...

journal_title：Radiation and environmental biophysics

authors： Szabó K,Lichtenthaler HK,Kocsányi L,Richter P

更新日期：1992-01-01 00:00:00

abstract：:The naturally synchronous development of early mouse embryos was exploited to address the question, whether micronuclei require a mitosis for expression or whether they can be expressed in the same cell cycle, in which exposure to X-rays or caffeine took place. Experiments with 2-cell and with 4-cell embryos showed th...

journal_title：Radiation and environmental biophysics

authors： Müller WU,Schlusen I,Streffer C

更新日期：1991-01-01 00:00:00

abstract：:Radiological impact assessment for flora and fauna requires adequate dosimetric data. Due to the variability of habitats, shapes, and masses of the non-human biota, assessment of doses is a challenging task. External and internal dose conversion coefficients for photons and electrons have been systematically calculate...

journal_title：Radiation and environmental biophysics

authors： Ulanovsky A,Pröhl G

更新日期：2006-09-01 00:00:00

abstract：:A number of approaches have been proposed to estimate the exposure of non-human biota to ionizing radiation. This paper reports an inter-comparison of the unweighted absorbed dose rates for the whole organism (compared as dose conversion coefficients, or DCCs) for both internal and external exposure, estimated by 11 o...

journal_title：Radiation and environmental biophysics

authors： Vives i Batlle J,Balonov M,Beaugelin-Seiller K,Beresford NA,Brown J,Cheng JJ,Copplestone D,Doi M,Filistovic V,Golikov V,Horyna J,Hosseini A,Howard BJ,Jones SR,Kamboj S,Kryshev A,Nedveckaite T,Olyslaegers G,Pröhl G,S

更新日期：2007-11-01 00:00:00

abstract：:The observable responses of living systems to ionizing radiation depend on the level of biological organization studied. Understanding the relationships between the responses characteristic of the different levels of organization is of crucial importance. The main objective of the present study is to investigate how s...

journal_title：Radiation and environmental biophysics

authors： Madas BG,Balásházy I

更新日期：2011-11-01 00:00:00

abstract：:The major goal of this study was to identify and quantitatively describe the association between the characteristics of chronic (low-dose rate) exposure to (low LET) ionizing radiation and cellularity of peripheral blood cell lines. About 3,200 hemograms (i.e., spectra of blood counts) obtained over the years of maxim...

journal_title：Radiation and environmental biophysics

authors： Akleyev AV,Akushevich IV,Dimov GP,Veremeyeva GA,Varfolomeyeva TA,Ukraintseva SV,Yashin AI

更新日期：2010-05-01 00:00:00

abstract：:An inter-comparison of five models designed to predict the effect of ionizing radiation on populations of non-human wildlife, performed under the IAEA EMRAS II programme, is presented and discussed. A benchmark scenario 'Population response to chronic irradiation' was developed in which stable generic populations of m...

journal_title：Radiation and environmental biophysics

authors： Vives I Batlle J,Sazykina TG,Kryshev A,Monte L,Kawaguchi I

更新日期：2012-11-01 00:00:00

abstract：:It has generally been assumed that the neutron and γ-ray absorbed doses in the data from the life span study (LSS) of the Japanese A-bomb survivors are too highly correlated for an independent separation of the all solid cancer risks due to neutrons and due to γ-rays. However, with the release of the most recent data ...

journal_title：Radiation and environmental biophysics

authors： Walsh L

更新日期：2013-03-01 00:00:00

abstract：:Human female lymphocytes were exposed to X-rays in vitro at 7 different doses between 40-280 R. In 830 metaphases chromosome analyses were carried out with either conventional staining or G-banding, respectively. 486 breakpoints are non-randomly distributed between chromosomes and chromosome arms. An excess of lesions...

journal_title：Radiation and environmental biophysics

authors： Bauchinger M,Götz G

更新日期：1979-01-01 00:00:00

abstract：:In the mountainous "Hohe Tauern" region of Salzburg (Austria), milk samples have been collected in a long-term montitoring programme since 1988, at eight alpine sites used for extensive, seasonal stock farming. For this alpine environment with its acidic soils developed on silicate bedrock, high soil-to-plant transfer...

journal_title：Radiation and environmental biophysics

authors： Lettner H,Hubmer A,Bossew P,Strebl F,Steinhäusler F

更新日期：2009-02-01 00:00:00

abstract：:The aim of this work was to define the possible occurrence of hematological changes during the course of a chronic ingestion of (137)Cs. A mouse model was used, with ingestion through drinking water with a cesium concentration of 20 kBq l(-1). Ingestion started in parent animals before mating, and (137)Cs intake and i...

journal_title：Radiation and environmental biophysics

authors： Bertho JM,Louiba S,Faure MC,Tourlonias E,Stefani J,Siffert B,Paquet F,Dublineau I

更新日期：2010-05-01 00:00:00

abstract：:The non-cancer mortality data for cerebrovascular disease (CVD) and cardiovascular diseases from Report 13 on the atomic bomb survivors published by the Radiation Effects Research Foundation were analysed to investigate the dose-response for the influence of radiation on these detrimental health effects. Various param...

journal_title：Radiation and environmental biophysics

authors： Schöllnberger H,Kaiser JC,Jacob P,Walsh L

更新日期：2012-05-01 00:00:00

abstract：:Microwave irradiation has been shown to decrease the input resistance of snail neurons. In this study, we examined the role of extracellular calcium in triggering the microwave-induced enhancement of membrane conductance. Two sets of experiments were conducted. In the first set, nerve cells were superfused using Ringe...

journal_title：Radiation and environmental biophysics

authors： Arber SL,Lin JC

更新日期：1985-01-01 00:00:00

abstract：:The main aim of this study was to investigate the dosimetric characteristics of the INTRABEAM ® system in the presence of air gaps between the surface of applicators (APs) and tumor bed. Additionally, the effect of tissue heterogeneities was another focus. Investigating the dosimetric characteristics of the INTRABEAM®...

journal_title：Radiation and environmental biophysics

authors： Tegaw EM,Gholami S,Omyan G,Geraily G

更新日期：2020-05-01 00:00:00

abstract：:The fluorescent intercalation complex of ethidium bromide with DNA was used as a probe to demonstrate damage in the base-pair region of DNA, due to the action of superoxide radicals. The O.2- radical itself, generated by gamma-radiolysis of oxygenated aqueous Na-formate solutions, is rather ineffective with respect to...

journal_title：Radiation and environmental biophysics

authors： Prütz WA

更新日期：1984-01-01 00:00:00

abstract：:In head computed tomography, radiation upon the eye lens (as an organ with high radiosensitivity) may cause lenticular opacity and cataracts. Therefore, quantitative dose assessment due to exposure of the eye lens and surrounding tissue is a matter of concern. For this purpose, an accurate eye model with realistic geo...

journal_title：Radiation and environmental biophysics

authors： Akhlaghi P,Ebrahimi-Khankook A,Vejdani-Noghreiyan A

更新日期：2017-05-01 00:00:00

abstract：:C57Bl6-lacZ animals were exposed to a range of low dose-rate simulated solar particle event (sSPE) radiation at the NASA-sponsored Research Laboratory (NSRL) at Brookhaven National Laboratory (BNL). Peripheral blood was harvested from animals from 1 to 12 days after total body irradiation (TBI) to quantify the level o...

journal_title：Radiation and environmental biophysics

authors： Chang PY,Doppalapudi R,Bakke J,Wang A,Menda S,Davis Z

更新日期：2010-08-01 00:00:00

abstract：:Among the various methods for studying the relative effects of transmutation and radiation of incorporated nuclides, simulation of beta radiation by external gamma exposure is of practical importance. Self-irradiation and mutual irradiation of the labeled cells cannot be neglected in any case. Furthermore, additional ...

journal_title：Radiation and environmental biophysics

authors： Hamann HJ,Irskens M

更新日期：1975-01-01 00:00:00

abstract：:A temporary increase in the incidence of infant leukaemia in Greece was reported by Petridou et al., which was attributed to in utero exposure to ionising radiation resulting from the Chernobyl accident. We performed a similar analysis based on the data of the German Childhood Cancer Registry in order to check whether...

journal_title：Radiation and environmental biophysics

authors： Steiner M,Burkart W,Grosche B,Kaletsch U,Michaelis J

更新日期：1998-07-01 00:00:00

abstract：:After ingestion or inhalation of radionuclides, internal organs of the human body will be exposed to ionising radiation. Current risk estimates of radiation-associated cancer from internal emitters are largely based on extrapolation of risk from high-dose externally exposed groups. Concerns have been expressed that ex...

journal_title：Radiation and environmental biophysics

authors： Little MP,Hall P,Charles MW

更新日期：2007-11-01 00:00:00

abstract：:Large lung sections of humans of advanced adult age revealed a markedly nonuniform retention pattern of dense anthracotic particle aggregates, with an impressive accumulation of this material along pulmonary lymphatics, i.e. the deep (peribronchial), septal (perivenous) and superficial (pleural) networks. Conversely, ...

journal_title：Radiation and environmental biophysics

authors： Cottier H,Meister F,Zimmermann A,Kraft R,Burkhardt A,Gehr P,Poretti G

更新日期：1987-01-01 00:00:00

abstract：:It is usually assumed that sparsely ionizing radiation produces randomly distributed DNA breakages. This seems to be supported by the finding that in some DNA fragments single-strand scissions occur uniformly at all nucleotide sites, regardless of sequence. We performed experiments on two DNA fragments of about 300 bp...

journal_title：Radiation and environmental biophysics

authors： Barone F,Belli M,Mazzei F

更新日期：1994-01-01 00:00:00

abstract：:The oxyhemoglobin saturation (HbO2) of single red blood cells within tumor microvessels (diameter: 3-12 micrometers) of DS-Carcinosarcoma was studied using a cryophotometric micromethod. In untreated control tumors (mean tissue temperature approx. 35 degrees C) the measured values scattered over the whole saturation r...

journal_title：Radiation and environmental biophysics

authors： Vaupel PW,Otte J,Manz R

更新日期：1982-01-01 00:00:00

abstract：:125I incorporated in DNA is known to be exceptionally toxic. Values of D0 range from about 40 to about 90 decays for survival of mammalian cells. The effectiveness of 125I in DNA with respect to the induction of breaks of the DNA strands, however, appears to be comparatively low. The numbers of strand breaks per energ...

journal_title：Radiation and environmental biophysics

authors： Tisljar-Lentulis G,Schneeweiss FH,Feinendegen LE

更新日期：1987-01-01 00:00:00