Exposure to high levels of genotoxic stress, such as high-dose ionizing radiation, increases both cancer and noncancer risks. However, it remains debatable whether low-dose ionizing radiation reduces cellular function, or rather induces hormetic health benefits. Here, we investigated the effects of total-body γ-ray radiation on muscle stem cells, called satellite cells. Adult C57BL/6 mice were ...

In the clinical setting, repeated exposures (10-30) to low-doses of ionizing radiation (≤200 cGy), as seen in radiotherapy for cancer, causes fatigue. Almost nothing is known, however, about the fatigue inducing effects of a single exposure to environmental low-dose ionizing radiation that might occur during high-altitude commercial air flight, a nuclear reactor accident or a solar particle eve...

background: ionizing radiation causes deleterious effects on living system mainly due to oxidative damages of macromolecules and protein is the major target due to its abundance. the aim of this study was to investigate the effects of ionizing radiation induced changes in the molecular properties of bovine serum albumin (bsa) its secondary and tertiary structures, degradation, cross linking and...

We explore the impact of ultraviolet (UV) radiation from massive Population III (Pop III) stars of 25, 40, 80, and 120 M⊙ on the subsequent Pop III star formation. In this paper, particular attention is paid to the dependence of radiative feedback on the mass of source Pop III star. UV radiation from the source star can work to impede the secondary star formation through the photoheating and ph...

Medical workers are exposed to chronic low dose ionizing radiation from a variety of sources. Potential cancer risks associated with ionizing radiation exposures have been derived from cohorts experiencing acute high intensity exposure, most notably the Japanese atomic bomb survivors. Since such extrapolations are subject to uncertainty, direct information on the risk associated with chronic lo...

Introduction: Ionizing radiations are the hazardous agents in the workplace and all forms of ionizing radiation produce some type of injuries. Awareness of application of protection guidelines and knowledge of the principles of radiation protection can play an important role in health of employees. Survey of radiation employee’s levels of awareness and practical behavior is essential and ...

The space environment consists mainly of high-energy charged particles, such as protons, electrons and heavy ions. They are originating from several sources including galactic cosmic radiation, solar flares and van Allen belts. High energy electromagnetic radiation and neutrons have also been measured on spacecraft. Although shielding can reduce the effect of space radiation it cannot be elimin...

The mouse Aprt locus on chromosome 8 was used as the selectable target for the study of spontaneous and ionizing radiation-induced mutations in kidney epithelia and ear fibroblasts. Fifty-two Aprt heterozygous mice were exposed to 7.5 Gy of (137)Cs-gamma radiation on their right sides, and Aprt-deficient clones were isolated from enzymatically digested tissues at times ranging from 1 day to 14 ...