Beneduci Amerigo, Cosentino Katia, Chidichimo Giuseppe
Department of Chemistry, University of Calabria, Via P. Bucci-Cubo 17/D, Arcavacata di Rende (CS) 87040, Italy.
Adhesion and Inflammation, CNRS UMR 7333, INSERM U1067, Aix Marseille University, Luminy, Marseille 13009, France.
Materials (Basel). 2013 Jul 9;6(7):2701-2712. doi: 10.3390/ma6072701.
A clear understanding of the response of biological systems to millimeter waves exposure is of increasing interest for the scientific community due to the recent convincing use of these radiations in the ultrafast wireless communications. Here we report a deuterium nuclear magnetic resonance spectroscopy (²H-NMR) investigation on the effects of millimeter waves in the 53-78 GHz range on phosphocholine bio-mimetic membranes. Millimeter waves significantly affect the polar interface of the membrane causing a decrease of the heavy water quadrupole splitting. This effect is as important as inducing the transition from the fluid to the gel phase when the membrane exposure occurs in the neighborhood of the transition point. On the molecular level, the above effect can be well explained by membrane dehydration induced by the radiation.
由于毫米波在超快无线通信中的近期令人信服的应用，科学界对生物系统对毫米波暴露的反应的清晰理解越来越感兴趣。在此，我们报告了一项关于53 - 78GHz范围内毫米波对磷酸胆碱仿生膜影响的氘核磁共振光谱（²H-NMR）研究。毫米波显著影响膜的极性界面，导致重水四极分裂减小。当膜在转变点附近暴露时，这种效应与诱导从流体相到凝胶相的转变同样重要。在分子水平上，上述效应可以通过辐射诱导的膜脱水得到很好的解释。
