A Temperature- and Dose Rate-Dependent Model for the Kinetics of Cellular Response to Ionizing Radiation

1975 ◽  
Vol 62 (3) ◽  
pp. 379 ◽  
Author(s):  
J. P. Brannen
Keyword(s):  
Ionizing Radiation ◽  
Dose Rate ◽  
Cellular Response ◽  
Rate Dependent ◽  
Dependent Model ◽  
Kinetics Of

Low Dose External γ Ionizing Radiation Regulates Mouse Immune Cells in a Dose and Dose-rate- Dependent Manner

2018 ◽  
Vol 32 ◽  
pp. 67
Author(s):  
Teni Ebrahimian ◽  
C. Demarquay ◽  
T. Ebrahimian ◽  
J. Vieira Dias ◽  
D. Kereselidze ◽  
...  
Keyword(s):  
Ionizing Radiation ◽  
Dose Rate ◽  
Immune Cells ◽  
Low Dose ◽  
Dependent Manner ◽  
Rate Dependent

Dose-rate dependent effects of ionizing radiation on vascular reactivity

2006 ◽  
Vol 122 (1-4) ◽  
pp. 543-545 ◽  
Author(s):  
T. Suvorava ◽  
L. Luksha ◽  
K. Ya. Bulanova ◽  
L. M. Lobanok
Keyword(s):  
Ionizing Radiation ◽  
Dose Rate ◽  
Vascular Reactivity ◽  
Rate Dependent

Study of the radiomodifier effect of Pityrocarpa moniliformis extract

2019 ◽  
Vol 7 (2A) ◽  
Author(s):  
João Victor Torres de Moraes ◽  
Ricardo Luiz Calazans Luna Filho ◽  
Williams Nascimento de Siqueira ◽  
Hianna Arely Milca Fagundes Silva ◽  
Dewson Rocha Pereira ◽  
...  
Keyword(s):  
Ionizing Radiation ◽  
Cellular Response ◽  
Biomphalaria Glabrata ◽  
Toxicity Tests ◽  
Antioxidant Compounds ◽  
Blastula Stage ◽  
Natural Substances ◽  
60Co Source ◽  
60Co Gamma ◽  
60Co Gamma Radiation

Ionizing radiation has been applied in several areas of knowledge, among them the study of the radiomodifier activity of natural substances. These substances can modify the cellular response to the damage induced by the radiation. Therefore, this work aimed to evaluate the radiomodifier action of Pityrocarpa moniliformis extract on Biomphalaria glabrata embryos exposed to 60Co gamma radiation. Initially, toxicity tests were performed on the extract against the B. glabrata embryos for the choice of concentration that did not cause death and embryonic malformation. Then, the antioxidant activity of the P. moniliformis extract with flavonoids and phenolic compounds was evaluated by means of the ABTS method. To evaluate the radiomodifier activity of the extract, embryos were selected in the blastula stage and irradiated with 7.5 Gy in a 60Co source (gammacell-Co60). Then, the embryos were exposed for 24 h to the extract of P. moniliformis at a concentration of 250 μg/mL. The results showed that the extract of P. moniliformis presents flavonoids and enzymatic inhibition by ABTS, which demonstrates the presence of antioxidant compounds. However, the tests of the radiomodifier activity did not present radioprotective effect for embryos exposed to ionizing radiation.

Effect of ionizing radiation on the kinetics of hydrogenation on the Ni-MgO mixed catalyst

1982 ◽  
Vol 47 (7) ◽  
pp. 1780-1786 ◽  
Author(s):  
Rostislav Kudláček ◽  
Jan Lokoč
Keyword(s):  
Experimental Data ◽  
Activation Energy ◽  
Liquid Phase ◽  
Ionizing Radiation ◽  
Oxide Catalyst ◽  
Absorbed Dose ◽  
Hydrogenation Rate ◽  
Solution Composition ◽  
Mixed Catalyst ◽  
Kinetics Of

The effect of gamma pre-irradiation of the mixed nickel-magnesium oxide catalyst on the kinetics of hydrogenation of maleic acid in the liquid phase has been studied. The changes of the hydrogenation rate are compared with the changes of the adsorbed amount of the acid and with the changes of the solution composition, activation energy, and absorbed dose of the ionizing radiation. From this comparison and from the interpretation of the experimental data it can be deduced that two types of centers can be distinguished on the surface of the catalyst under study, namely the sorption centres for the acid and hydrogen and the reaction centres.

scholarly journals Toxicity and chemical transformation of silver nanoparticles in A549 lung cells: dose-rate-dependent genotoxic impact

2021 ◽  
Author(s):  
Laure Bobyk ◽  
Adeline Tarantini ◽  
David Beal ◽  
Giulia Veronesi ◽  
Isabelle Kieffer ◽  
...  
Keyword(s):  
Cell Cycle ◽  
Silver Nanoparticles ◽  
Dose Rate ◽  
Cell Metabolism ◽  
A549 Cells ◽  
Dna Integrity ◽  
Lung Cells ◽  
Ag Nps ◽  
Rate Dependent ◽  
A549 Lung

Acute exposure of A549 cells to Ag-NPs induces stronger effects on DNA integrity, ROS level, cell metabolism and cell cycle than repeated exposure. Ag-NPs dissolves in both exposure conditions and Ag ions recombine with thiolated proteins.

Using a Temperature-Switching Approach to Evaluate Low-Dose-Rate Ionizing Radiation Effects on SET in Linear Bipolar Circuits

2019 ◽  
Vol 66 (7) ◽  
pp. 1557-1565 ◽  
Author(s):  
Shuai Yao ◽  
Wu Lu ◽  
Xin Yu ◽  
Qi Guo ◽  
Chengfa He ◽  
...  
Keyword(s):  
Ionizing Radiation ◽  
Dose Rate ◽  
Radiation Effects ◽  
Low Dose ◽  
Low Dose Rate

scholarly journals Disruption of ATM in p53-null cells causes multiple functional abnormalities in cellular response to ionizing radiation

Oncogene ◽  
1999 ◽  
Vol 18 (50) ◽  
pp. 7002-7009 ◽  
Author(s):  
Noriaki Takao ◽  
Hideaki Kato ◽  
Ryoichi Mori ◽  
Ciaran Morrison ◽  
Eiichiro Sonada ◽  
...  
Keyword(s):  
Ionizing Radiation ◽  
Cellular Response
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