Melatonin/IonizingRadiation/Radiobiology/RadioprotectiyelRadiotherapy/RepalrEnzyme. In spite of the fact that radiotherapy is a common and effective tool fOr cancer treatment; the radio sensitivity of normal tissues adjacent to the tumor which are unavoidably exposed to radiation limits therapeutic gain. For the sake of improvement in radiation therapy, radiobiologythe study of the action of io...

Modern medicine cannot exist without diagnostic and therapeutic methods that are based on ionizing radiation. Therefore it is necessary to understand interactions between this form of energy living matter make a full use progress in radiobiology. Ionizing radiation widely used for relatively long time, how known, disproportionately huge doses particularly harmful organisms including humans. How...

Department of Pharmacology, University of Arizona Medical Center, Tucson, Arizona 85724 fD. H. R.]; Division of Radiobiology and Biophysics, University of Virginia School of Medicine, CharlottesvÃ1⁄4le,Virginia 22901 ¡W.B. L., C. J. K., H, A. H.]; Baltimore Cancer Research Center, National Cancer Institute, Baltimore, Maryland 21211 [L. J. M., S. M. L.J; and Biochemistry Cancer Research, Howar...

In addition to the physical advantages (Bragg peak), the use of charged particles in cancer therapy can be associated with distinct biological effects compared to X-rays. While heavy ions (densely ionizing radiation) are known to have an energy- and charge-dependent increased Relative Biological Effectiveness (RBE), protons should not be very different from sparsely ionizing photons. A slightly...