Effects of Dose Rate on Response of Synechococcus lividus to Very Low Doses of Chronic γ Radiation: Influence of Enzymatic Equipment of Starting Cells

1986 ◽  
Vol 105 (3) ◽  
pp. 379 ◽  
Author(s):  
A. Conter ◽  
D. Dupouy ◽  
H. Planel
Keyword(s):  
Dose Rate ◽  
Low Doses ◽  
Γ Radiation ◽  
Synechococcus Lividus

Radiolysis of dilute aqueous thiourea solutions

1966 ◽  
Vol 292 (1428) ◽  
pp. 122-133 ◽  
Keyword(s):  
Aqueous Solution ◽  
Dose Rate ◽  
Direct Effect ◽  
Indirect Effect ◽  
Radiation Doses ◽  
Limited Extent ◽  
Γ Radiation ◽  
Low Concentration ◽  
Dose Rates ◽  
Rapid Destruction

Thiourea, when present at low concentration, can act as a radiation protector to macromolecules (biological or polymeric) in aqueous solution. Previous work has shown that much of this protection occurs against the indirect effect. Thiourea can also protect against the direct effect, though to a more limited extent. In this paper the reactions of dilute aqueous thiourea solutions have been followed at a range of γ radiation doses and dose rates, and in the absence and presence of oxygen. The rapid destruction of thiourea confirms that the effect is primarily indirect, and almost independent of concentration, and dose rate over the range 10 to 500 mg/1. The breakdown products of thiourea can react further. In the presence of oxygen the loss of thiourea is more rapid, and different products are formed.

Low Doses of Very Low-Dose-Rate Low-LET Radiation Suppress Radiation-Induced Neoplastic TransformationIn Vitroand Induce an Adaptive Response

2008 ◽  
Vol 169 (3) ◽  
pp. 311-318 ◽  
Author(s):  
E. Elmore ◽  
X-Y. Lao ◽  
R. Kapadia ◽  
E. Giedzinski ◽  
C. Limoli ◽  
...  
Keyword(s):  
Dose Rate ◽  
Adaptive Response ◽  
Low Dose ◽  
Low Doses ◽  
Low Dose Rate ◽  
Radiation Induced

Induction of Oncogenic Transformation by Low Doses of X Rays and Dose-Rate Effect

1984 ◽  
Vol 98 (2) ◽  
pp. 274 ◽  
Author(s):  
Masami Watanabe ◽  
Masakatsu Horikawa ◽  
Osamu Nikaido
Keyword(s):  
Dose Rate ◽  
Rate Effect ◽  
Low Doses ◽  
X Rays ◽  
Oncogenic Transformation ◽  
Dose Rate Effect

Low doses of α- and γ-radiation enhance DNA thermal stability

1999 ◽  
Vol 80 (2) ◽  
pp. 103-118 ◽  
Author(s):  
A.G Georgakilas ◽  
E.G Sideris ◽  
L Sakelliou ◽  
C.A Kalfas
Keyword(s):  
Thermal Stability ◽  
Low Doses ◽  
Γ Radiation

Low doses of γ-radiation induce consistent protein expression changes in human leukocytes

2011 ◽  
Vol 8 (5/6) ◽  
pp. 374 ◽  
Author(s):  
Sara Skiöld ◽  
Susanne Becker ◽  
Ulf Hellman ◽  
Gert Auer ◽  
Ingemar Näslund ◽  
...  
Keyword(s):  
Protein Expression ◽  
Low Doses ◽  
Γ Radiation ◽  
Human Leukocytes

scholarly journals Effects of low doses of gamma rays on the stability of normal and diabetic erythrocytes.

2011 ◽  
Vol 58 (4) ◽  
Author(s):  
Magdalena Kaczmarska ◽  
Zofia Kopyściańska ◽  
Maria Fornal ◽  
Tomasz Grodzicki ◽  
Krzysztof Matlak ◽  
...  
Keyword(s):  
Diabetic Patients ◽  
Low Doses ◽  
Γ Radiation ◽  
Human Red Blood Cells ◽  
Healthy Donors ◽  
Protein Membrane ◽  
Applied Dose ◽  
The Stability ◽  
Membrane Components ◽  
Enzymatic Pathways

We studied the influence of low doses of γ radiation (from 0.04 to 1.8 mGy) on the stability of human red blood cells (RBC) from healthy donors and diabetic patients using absorption spectroscopy. Because of the alteration of many enzymatic pathways in diabetic RBCs resulting in strong modification of the lipid and protein membrane components one could expect that the ionizing γ-radiation should influence the stability of the healthy and diabetic cells in a different way. Indeed, distinct discontinuities and monotonic changes of hemolysis detected in the healthy and diabetic RBCs suggest that various enzymatic and chemical processes are activated in these membranes by γ radiation. Mössbauer measurements showed that only the highest applied dose of γ radiation caused modification of hemoglobin in both types of RBCs.

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