The frequency of micronuclei in bone marrow cells of mice treated or not with Liv. 52 and then exposed to 4.5 Gy of gamma-radiation was evaluated from 6 h to 14 days post irradiation. The frequency of micronuclei increased from 6 h to 24 h post irradiated in both irradiated groups and declined thereafter, the frequency of micronuclei remaining significantly lower in the Liv. 52-treated group. T...

As a member of the United Nations Committee on the Peaceful Uses of Outer Space (COPUOS), Iran has a long-term space exploration program. Space radiation is one of the challenges facing humans when they go outside Earth's protective atmosphere and magnetic field. Space is an environment that the cardinal principles of radiation protection i.e. time, distance and shielding cannot be effectively ...

ICE/ced-3 related proteases (caspases) have been implicated in programmed cell death in a wide variety of cell types. However, their roles in radiation-induced cell death in cultures of mixed, neuronal and glial precursors cells are poorly understood. In order to further elucidate the molecular mechanisms underlying radiation induced death in this system; we have examined the ability of ionizin...

Interaction between radiation and Adriamycin damage reduced the width of the shoulder of the X-ray survival curve. This effect was found to persist for at least 24 hr after Adriamycin treatment. Adriamycin did not affect radiation damage when cells were treated either before two-dose fractionation or with the drug present between X-ray exposures. Adriamycin is unique in that its major effect on...

Our aim was to understand how protection from solar radiation influenced the behaviour and physiology of Holstein Friesian dairy cattle. We compared the behaviour and body temperature of pastured dairy cattle kept in 1of 4 treatments: no shade or free access to shade that blocked either 25, 50 or 99% of solar radiation (n = 3 groups per treatment, 3 animals/group). Within each group, cows were ...

1 Physikalisch-Meteorologisches Observatorium Davos / World Radiation Center, Dorfstrasse 30, 7278 Davos Dorf, Switzerland 2 Aristotle University of Thessaloniki, Laboratory of Atmospheric Physics, Campus Box 149, 541 24 Thessaloniki, Greece 3 Innsbruck Medical University, Division for Biomedical Physics, Müllerstr. 44, 6020 Innsbruck, Austria 4 National Oceanic and Atmospheric Administration, ...

This study investigated the correlation between knowledge and performance of radiation protection among operating room nurses. The research design was a descriptive survey. Data were collected by using a Kang’s questionnaire from August 24 to September 7, 2015. The participants were 184 operating room nurses. There were no significant differences in knowledge of radiation protection according t...

Since L-dopa (L-3,4-dihydroxyphenylalanine) has been shown to possess a selective toxicity for melanoma cells both in vitro and in vivo, we have examined the combined effect of L-dopa and radiation on human melanoma cells. It was found that the combined use of L-dopa potentiated the radiation cytotoxicity to HMV-I human melanoma cells, compared with the response seen in non-melanoma HeLa S3 cel...

BACKGROUND The radiation dose delivered from computed tomography (CT) scanning and the risks associated with ionising radiation are major concerns in paediatric imaging. Compared to adults, children have increased organ sensitivity and a longer expected lifetime in which cancer may develop. Therefore, it is important to investigate the awareness of paediatricians (referring physicians) regardin...

Introduction: A high risk for development of severe side effects after radiotherapy may be correlated with high cellular radiosensitivity. To enhance radiation therapy efficiency a fast and reliable in-vitro test is desirable to identify radiosensitive patients. The aim of present study was to identify the mechanism of radiation induced DNA double-strand breaks (DSBs) and DSB r...