The Sensitivity of Ribosomal Functions in Tetrahymena pyriformis to Varying Doses and Dose Rates of Gamma-Radiation

1975 ◽  
Vol 64 (3) ◽  
pp. 509 ◽  
Author(s):  
Nancy L. Oleinick ◽  
Ronald C. Rustad
Keyword(s):  
Gamma Radiation ◽  
Tetrahymena Pyriformis ◽  
Dose Rates

Investigation of toxicological effects caused by gamma radiation delivered by different dose rates

2014 ◽  
Author(s):  
Yong Chen ◽  
Yu Wang ◽  
Xiaolian Duan ◽  
Hua-Tang Zhang ◽  
Yuyue Jia
Keyword(s):  
Gamma Radiation ◽  
Dose Rates ◽  
Toxicological Effects

scholarly journals Differential expression of NPM, GSTA3, and GNMT in mouse liver following long-term in vivo irradiation by means of uranium tailings

2018 ◽  
Vol 38 (5) ◽  
Author(s):  
Lan Yi ◽  
Hongxiang Mu ◽  
Nan Hu ◽  
Jing Sun ◽  
Jie Yin ◽  
...  
Keyword(s):  
Gamma Radiation ◽  
Radiation Exposure ◽  
Central Vein ◽  
Glutathione S Transferase ◽  
Γ Radiation ◽  
Dose Rates ◽  
Living Organisms ◽  
Uranium Tailings

Uranium tailings (UT) are formed as a byproduct of uranium mining and are of potential risk to living organisms. In the present study, we sought to identify potential biomarkers associated with chronic exposure to low dose rate γ radiation originating from UT. We exposed C57BL/6J mice to 30, 100, or 250 μGy/h of gamma radiation originating from UT samples. Nine animals were included in each treatment group. We observed that the liver central vein was significantly enlarged in mice exposed to dose rates of 100 and 250 μGy/h, when compared with nonirradiated controls. Using proteomic techniques, we identified 18 proteins that were differentially expressed (by a factor of at least 2.5-fold) in exposed animals, when compared with controls. We chose glycine N-methyltransferase (GNMT), glutathione S-transferase A3 (GSTA3), and nucleophosmin (NPM) for further investigations. Our data showed that GNMT (at 100 and 250 μGy/h) and NPM (at 250 μGy/h) were up-regulated, and GSTA3 was down-regulated in all of the irradiated groups, indicating that their expression is modulated by chronic gamma radiation exposure. GNMT, GSTA3, and NPM may therefore prove useful as biomarkers of gamma radiation exposure associated with UT. The mechanisms underlying those changes need to be further studied.

Variation in radon concentration and terrestrial gamma radiation dose rates in relation to the lithology in southern part of Kumaon Himalaya, India

2006 ◽  
Vol 41 (6) ◽  
pp. 714-720 ◽  
Author(s):  
R.C. Ramola ◽  
V.M. Choubey ◽  
Yogesh Prasad ◽  
Ganesh Prasad ◽  
S.K. Bartarya
Keyword(s):  
Radiation Dose ◽  
Gamma Radiation ◽  
Radon Concentration ◽  
Dose Rates ◽  
Kumaon Himalaya ◽  
Gamma Radiation Dose

Changes in Growth, Morphology, and Physiology of Tetrahymena pyriformis Exposed to Continuous Cesium-137 and Cobalt-60 Gamma-Radiation

2022 ◽  
Vol 79 (2) ◽  
Author(s):  
Soukaina Ziyadi ◽  
Abdelghani Iddar ◽  
Mostafa Kabine ◽  
Mohammed El Mzibri ◽  
Adnane Moutaouakkil
Keyword(s):  
Gamma Radiation ◽  
Tetrahymena Pyriformis ◽  
Growth Morphology ◽  
Cesium 137

scholarly journals Spatial distribution of gamma radiation dose rates from natural radionuclides and its radiological hazards in sediments along river Iju, Ogun state Nigeria

MethodsX ◽  
2020 ◽  
Vol 7 ◽  
pp. 101086
Author(s):  
Omeje Maxwell ◽  
Adewoyin Olusegun O. ◽  
Joel Emmanuel S. ◽  
Ikechukwu Ijeh B. ◽  
Omeje Uchechukwu A. ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Radiation Dose ◽  
Gamma Radiation ◽  
Natural Radionuclides ◽  
Dose Rates ◽  
Ogun State ◽  
Radiological Hazards ◽  
Gamma Radiation Dose

Terrestrial gamma radiation dose rates (TGRD) from surface soil in Negeri Sembilan, Malaysia

2014 ◽  
Vol 104 ◽  
pp. 112-117 ◽  
Author(s):  
Nor Eliana Norbani ◽  
Nazaratul Ashifa Abdullah Salim ◽  
Ahmad Saat ◽  
Zaini Hamzah ◽  
Ahmad Termizi Ramli ◽  
...  
Keyword(s):  
Radiation Dose ◽  
Gamma Radiation ◽  
Surface Soil ◽  
Dose Rates ◽  
Gamma Radiation Dose

Temporal changes in boreal forest tree canopy cover along a gradient of gamma radiation

1985 ◽  
Vol 63 (1) ◽  
pp. 15-20 ◽  
Author(s):  
B. D. Amiro ◽  
J. R. Dugle
Keyword(s):  
Gamma Radiation ◽  
Boreal Forest ◽  
Gamma Rays ◽  
Forest Canopy ◽  
Canopy Cover ◽  
Woody Species ◽  
Tree Canopy ◽  
Forest Site ◽  
Dose Rates ◽  
Tree Canopy Cover

A forest site in southeastern Manitoba has been irradiated by a point source of gamma rays continuously since 1973, and measurements have been made yearly to study the change in boreal forest canopy cover along the radiation gradient. After 10 years of chronic irradiation, a zone of total tree death has resulted from mean dose rates between 25 and 62 mGy h−1. Tree canopy cover was reduced at mean dose rates exceeding ~ 4.5 mGy h−1 and the largest reduction occurred in the first 2 years of irradiation. The temporal responses of seven woody species to gamma radiation are presented. Bebb's willow, trembling aspen, speckled alder, and paper birch were less sensitive to radiation than black spruce, balsam fir, and jack pine. The results confirm that gymnosperms are more sensitive to gamma rays than angiosperms.

RESPONSES TO PROSTEPHANUS TRUNCATUS (COLEOPTERA: BOSTRICHIDAE) AND TRIBOLIUM CASTANEUM (COLEOPTERA: TENEBRIONIDAE) TO GAMMA RADIATION FROM 60Co

1979 ◽  
Vol 111 (10) ◽  
pp. 1111-1114 ◽  
Author(s):  
Esbaide Adem ◽  
R.M. Uribe ◽  
F.L. Watters
Keyword(s):  
Gamma Radiation ◽  
Tribolium Castaneum ◽  
Prostephanus Truncatus ◽  
Dose Rates ◽  
Coleoptera Tenebrionidae ◽  
Delivered Dose

AbstractThe radiosensitivity of Prostephanus truncatus (Horn) and Tribolium castaneum (Herbst) to 60Co radiation was determined at doses of 5 to 100 krad. P. truncatus was more radiosensitive than T. castaneum at 5, 15, and 25 krad (P < 0.05) at 8 and 16 days after irradiation but after 24 days all individuals irradiated at 15 and 25 krad were dead. At 50 or 100 krad all individuals of both species died in 16 or 12 days, respectively. Dose rates of 1.07 to 12.84 krad/min for a total delivered dose of 25 krad had no effect on the speed of lethal response. The results indicate that on economic grounds alone, it may not be justified to use 50 or 100 krad to accelerate the onset of death by 8 or 12 days, respectively.

Estimating dose rates from naturally occurring gamma radiation in British homes

2013 ◽  
Vol 2013 (1) ◽  
pp. 3897
Author(s):  
Gerry Kendall ◽  
Michael Athanson ◽  
Elliot Carter ◽  
Tim Vincent ◽  
Richard Wakeford ◽  
...  
Keyword(s):  
Gamma Radiation ◽  
Dose Rates ◽  
Naturally Occurring

Mutations and chromosomal aberrations in hMTH1-transfected and non-transfected TK6 cells after exposure to low dose rates of gamma radiation

2014 ◽  
Vol 53 (2) ◽  
pp. 417-425 ◽  
Author(s):  
Sara Shakeri Manesh ◽  
Marta Deperas-Kaminska ◽  
Asal Fotouhi ◽  
Traimate Sangsuwan ◽  
Mats Harms-Ringdahl ◽  
...  
Keyword(s):  
Gamma Radiation ◽  
Chromosomal Aberrations ◽  
Low Dose ◽  
Dose Rates ◽  
Tk6 Cells
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