scholarly journals Role of the main cytosine radiolytic product in ionizing radiation-induced mutagenesis.

1987 ◽  
Vol 28 (4) ◽  
pp. 254-261 ◽  
Author(s):  
HITOSHI AYAKI ◽  
OSAMU YAMAMOTO ◽  
SHOZO SAWADA
PLoS ONE ◽  
2014 ◽  
Vol 9 (5) ◽  
pp. e97599 ◽  
Author(s):  
Ujjal Das ◽  
Krishnendu Manna ◽  
Mahuya Sinha ◽  
Sanjukta Datta ◽  
Dipesh Kr Das ◽  
...  

2021 ◽  
Vol 19 ◽  
Author(s):  
Tapan Behl ◽  
Gagandeep Kaur ◽  
Aayush Sehgal ◽  
Gokhan Zengin ◽  
Sukhbir Singh ◽  
...  

Background: Ionizing radiation from telluric sources is unceasingly an unprotected pitfall to humans. Thus, the foremost contributors to human exposure are global and medical radiations. Various pieces of evidences assembled during preceding years reveal the pertinent role of ionizing radiation-induced oxidative stress in the progression of neurodegenerative insults such as Parkinson’s disease, which have been contributing to increased proliferation and generation of reactive oxygen species. Objective: This review delineates the role of ionizing radiation-induced oxidative stress in Parkinson’s disease and proposes novel therapeutic interventions of flavonoid family offering effective management and slowing down the progression of Parkinson’s disease. Method: Published papers were searched via MEDLINE, PubMed, etc. published to date for in-depth database collection. Results: The potential of oxidative damage may harm the non-targeted cells. It can also modulate the functions of central nervous system, such as protein misfolding, mitochondria dysfunction, increased levels of oxidized lipids, and dopaminergic cell death, which accelerates the progression of Parkinson’s disease at the molecular, cellular, or tissue levels. In Parkinson’s disease, reactive oxygen species exacerbate the production of nitric oxides and superoxides by activated microglia, rendering death of dopaminergic neuronal cell through different mechanisms. Conclusion: Rising interest has extensively engrossed on the clinical trial designs based on the plant derived family of antioxidants. They are known to exert multifarious impact either way in neuroprotection via directly suppressing ionizing radiation-induced oxidative stress and reactive oxygen species production or indirectly increasing the dopamine levels and activating the glial cells.


Author(s):  
Guogang Xu ◽  
Gabriel W. Intano ◽  
John R. McCarrey ◽  
Ronald B. Walter ◽  
C. Alex McMahan ◽  
...  

2018 ◽  
Vol 24 (4) ◽  
pp. 340-345 ◽  
Author(s):  
Peyman Amini ◽  
Saeed Rezapoor ◽  
Dheyauldeen Shabeeb ◽  
Ahmed Eleojo Musa ◽  
Masoud Najafi ◽  
...  

Background: Epidemiological studies have shown an increased incidence of heart diseases among survivors of Chernobyl disaster as well as Hiroshima and Nagasaki atomic bomb explosion. Similar results were observed for lung and left breast cancer patients. Experimental studies have proposed the chronic upregulation of some pro-inflammatory and pro-fibrotic cytokines. Recent studies have shown that upregulation of pro-oxidant enzymes play a key role in the development of late effects of ionizing radiation such as fibrosis. Interleukin-4 (IL-4) and Interleukin-13 (IL-13) are two important cytokines that have shown ability to induce production of free radicals through dual oxidases (Duox) i.e. Duox1 and Duox2. In this study, we aimed to detect the expression of IL-4 receptor-a1 (IL-4Ra1), IL-13 receptor-a2 (IL-13Ra2), Duox1 and Duox2 genes following irradiation of rat’s heart. In addition, we evaluated the possible role of the combination of curcumin and selenium-L-methionine on the regulation of these genes. Methods: Twenty rats were divided into 4 groups as follows; G1: control; G2: treatment with the combination of curcumin and selenium-L-methionine; G3: radiation; G4: radiation plus treatment with the combination of curcumin and selenium-L-methionine. Rats were sacrificed 10 weeks after irradiation for detecting the expression of IL-4Ra1, IL-13Ra2, Duox1 and Duox2. Results: Results showed that exposure to ionizing radiation caused upregulation of IL-4Ra1 by more than 4-fold as well as Duox1 and Duox2 by more than 5-fold. However, results showed no detectable expression for IL-13Ra2. Treatment with the combination of curcumin and selenium-L-methionine could attenuate the upregulation of all genes. Conclusion: This study has shown that exposing rat’s heart tissues to radiation leads to chronic upregulation of IL-4Ra1, Duox1 and Duox2 as well as pro-oxidant enzymes. Treatment with the combination of curcumin and selenium-L-methionine showed ability to attenuate the upregulation of these genes.


2007 ◽  
Vol 250 (1) ◽  
pp. 63-73 ◽  
Author(s):  
Ying Zhang ◽  
Junqing Zhou ◽  
Xiaofan Cao ◽  
Qinming Zhang ◽  
Chang U.K. Lim ◽  
...  

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