title: Cell hydration as a biomarker for estimation of biological effects of nonionizing radiation on cells and organisms.
abstract: "Changes in cell hydration" have been hypothesized as an input signal for intracellular metabolic cascade responsible for biological effects of nonionizing radiation (NIR). To test this hypothesis a comparative study on the impacts of different temperature and NIR (infrasound frequency mechanical vibration (MV), static magnetic field (SMF), extremely low frequency electromagnetic field (ELF EMF), and microwave (MW)) pretreated water on the hydration of barley seeds in its dormant and germination periods was performed. In dormant state temperature sensitivity (Q 10) of seed hydration in distilled water (DW) was less than 2, and it was nonsensitive to NIR treated DW, whereas during the germination period (48-72 hours) seeds hydration exhibited temperature sensitivity Q 10 > 2 and higher sensitivity to NIR treated DW. Obtained data allow us to suggest that the metabolic driving of intracellular water dynamics accompanied by hydrogen bonding and breaking is more sensitive to NIR-induced water structure changes in seed bathing aqua medium than the simple thermodynamic processes such as osmotic gradient driven water absorption by seeds in dormant state. Therefore, cell hydration is suggested to be a universal and extrasensitive biomarker for detection of biological effects of NIR on cells and organisms.
authors.affiliation: UNESCO Chair in Life Sciences International Postgraduate Educational Center, 31 Acharian Street, 0040 Yerevan, Armenia.
authors.forename: Sinerik
authors.identifier: 0000-0001-6057-3968
authors.initials: S
authors.lastname: Ayrapetyan
authors.affiliation: UNESCO Chair in Life Sciences International Postgraduate Educational Center, 31 Acharian Street, 0040 Yerevan, Armenia.
authors.forename: Jaysankar
authors.initials: J
authors.lastname: De
mesh_terms: D015415:Biomarkers / Q000032:analysis*; D004574:Electromagnetic Fields; D018525:Germination / Q000528:radiation effects; D001467:Hordeum / Q000166:cytology; D008872:Microwaves; D059828:Plant Cells / Q000528:radiation effects*; D011840:Radiation, Nonionizing; D012639:Seeds / Q000166:cytology* / Q000528:radiation effects*; D013696:Temperature; D013997:Time Factors; D014732:Vibration; D014867:Water / Q000737:chemistry*
chemical_list: D015415:Biomarkers; D014867:Water