The Inter-Strand Modes of the DNA as a Probe into MW-Radiation
نویسنده
چکیده
We consider the regime in which the bands of the torsional acoustic (TA) and the hydrogen-bond-stretch (HBS) modes of the DNA interpenetrate each other. Within the framework of a model that accommodates the structure of the double helix, we find the three-wave interaction between the TA-and the HBS-modes, and show that microwave radiation could bring about torsional vibrations that could serve as a pump mode for maintaining the HBS-one. Rayleigh's threshold condition for the parametric resonance provides an estimate for the power density of the mw-field necessary for generating the HBS-mode.
منابع مشابه
Modeling the distribution of deposited energy by alpha particles from Radon 223 decay and its effect on DNA
The ionizing radiations, through physical and chemical processes, lead to simple and complex single- and double- strand breaks, as well as base lesions to the DNA. In this study, taking into account all the physical and chemical processes involved in the interaction of ionizing radiation with matter, the initial damage induced to DNA was evaluated for 5.7 MeV alpha-rays from Radon 223 isotope....
متن کاملSimulation of strand breaks induced in DNA molecule by radiation of proton and Secondary particles using Geant4 code
Radiotherapy using various beams is one of the methods for treating cancer, Hadrons used to treat cancers that are near critical organs. The most important part of the cell that is damage by ionizing radiation is DNA. In this study, damages induced in the genetic material of living cells (DNA) defined by the atomic model from the protein data bank (PDB) have been studied by radiati...
متن کاملThe study of dose gamma rays of 192Ir source on DNA single strand break (SSB) and DNA double strand break (DSB) in soft tissue phantom
Introduction: Passage of ionizing radiation through the organs of living creatures develops clusters of damaged nucleotides inside the DNA rounds. 192Ir Gamma source is one of the most widely used sources in brachytherapy of cervical and prostate cancer. Thus, in this research, we investigated the flux of photons and its resulting secondary electrons, the single-strand break (S...
متن کاملEvaluating Gamma-H2AX Expression as a Biomarker of DNA Damage after X-ray in Angiography Patients
Objective: Coronary heart disease (CHD) is one of the most common diseases. Coronary angiography (CAG) is an important apparatus used to diagnose and treat this disease. Since angiography is performed through exposure to ionizing radiation, it can cause harmful effects induced by double-stranded breaks in DNA which is potentially life-threatening damage. The aim of the present study is to inves...
متن کاملResidual DNA double strand breaks correlates with excess acute toxicity from radiotherapy
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...
متن کامل