Properties of Nanoscale Particles on the Basis of Metals Localized Into Biological Tissues

• Published in: Uspehi Fiziki Metallov Vol. 4; no. 4; pp. 303 - 336
• Main Authors: Shpak, A. P., Brik, A. B., Karbovskiy, V. L., Rosenfeld, L. G.
• Format: Journal Article
• Language: English; Russian
• Published: G. V. Kurdyumov Institute for Metal Physics of the N.A.S. of Ukraine 01.12.2003
• ISSN: 1608-1021; 1608-1021; 2617-0795
• DOI: 10.15407/ufm.04.04.303

The nanoscale solid-state particles localized into high-mineralised biological tissues (tooth enamel, bone) and into weakly-mineralised tissues (organic tissue of mollusc shells, tissue of brain) are considered. The properties of the nanoscale solid-state particles formed on the basis of metallic ions are studied. The data about properties of the nanoscale particles localized into abovementioned biological tissues are obtained mainly by electron paramagnetic resonance (EPR). For high-mineralised tissues, the problems bound with hierarchy of an internal structure, interaction mechanisms of an organic and mineral substance, an anisotropy of their structure, and impurity crystalline phases are considered. For weakly mineralised tissues, the anomalous resonance signals (caused by the particles with magnetic ordering), which have unique dynamical characteristics, are described. At high level of microwave power, the parabolic zones caused by the coherent phenomena are appeared on the outline of the signals. As concluded, within the brain tissue the physiological (normal) mineralisation and pathological one take place. As suggested, physiological mineral particles play important role in operation of brain and pathological particles and they are the causes of brain diseases. The possible applications of the described results are discussed for solution of fundamental and applied problems bound with nanoscale particles intruded into the biological tissues. The mineral component of high-mineralised tissues and mineral inclusions of weakly-mineralised tissues have the structure of solid-state particles. This fact opens the possibilities for describing the processes within the biological tissues by strong physical approaches. Besides, the information about the properties, of nanoscale solid-state particles within the biological tissues opens possibilities for creation of the technical systems and equipments, which would use the principles of the biological tissue functioning.