Background: The development of methods to alleviate radiation-induced health effects is important for the practical use of radiation therapy and for understanding the molecular mechanisms mediating these effects. Here, we examined the protective capability of N-acetylcysteine (NAC) on life-shortening effects induced by continuous low dose-rate gamma-ray exposure in mice. Materials and Methods: ...

Alzheimer’s disease, the most common type of dementia and a progressive neurode-generative disease, occurs when the nerve cells in the brain die. Although there are medications that can help delay the development of Alzheimer’s disease, there is cur-rently no cure for this disease. Exposure to ionizing and non-ionizing radiation may cause adverse health effects such as cancer. Looking at th...

Radiation-induced normal tissue lesions, once seen as a consequence of loss of proliferative integrity of clonogenic target cells, inevitable and untreatable are now viewed as a result of dynamic interactions between multiple cell lines within a particular tissue that can be intervened. Normal tissue damage is the most important limiting factor in radiotherapy and a major component in the medic...

The hematopoietic syndrome is anticipated when a dose of radiation greater than 100 cGy is received. The resulting clinical situation is life-threatening because of opportunistic infections and gradual decline in immune competency due to irradiation. Because of evidence of a possible immunomodulatory role for cimetidine, an antagonist of histamine H2 receptors, we studied the effects of thi...

This paper addresses the combined effects of couple stresses, thermal radiation, viscous dissipation and slip condition on a free convective flow of a couple stress fluid induced by a vertical stretching sheet. The Cogley- Vincenti-Gilles equilibrium model is employed to include the effects of thermal radiation in the study. The governing boundary layer equations are transformed into a system o...

background: astronauts will be exposed to both chronic space radiation and acute high doses of energetic radiation of solar particle events in long-term deep space missions. the application of radioprotectors in space missions has basic limitations such as their very short time window as well as their acute toxicity and considerable side effects. the aim of the present study was to investigate ...

some areas of ramsar, a city in northern iran are among the world’s wellknown inhabited areas with highest levels of natural radiation. annual exposure levels in these areas are up to 260 mgy y‐1 and the mean exposure rate is about 10 mgy y‐1 for a population of about 2000 residents. if elevated levels of natural radiation as high as a few hundred msv per year is detrimental to health and leads...

background: interactions of free radicals from ionizing radiation with dna can induce dna damage and lead to mutagenesis and carsinogenesis. with respect to radiation damage to human, it is important to protect humans from side effects induced by ionizing radiation. in the present study, the effects of arbutin were investigated by using the micronucleus test for anti-clastogenic activity, to ca...

Background: The health effect of rapidly increasing everyday exposure of humans to radiofrequency radiation is a major global concern. Mobile phone jammers prevent the mobile phones from receiving signals from base stations by interfering with authorized mobile carriers’ services. In spite of the fact that mobile jammer use is illegal, they are occasionally used in offices, shrines, confe...

The effect of UV beam, which has been emitted from a natural or a manmade source on cells has been studied in previous studies for several times. Radiation of this beam can have different effects on DNA of the cell, cytotoxicity, the structure of cellular proteins and their mechanical properties based on radiation period or frequency. The effect of radiation of two types of beams, namely UVB an...