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线粒体电场对细胞电磁学弗罗利希模型中模态占据的影响。

Impact of mitochondrial electric field on modal occupancy in the Fröhlich model of cellular electromagnetism.

作者信息

Šrobár Fedor

机构信息

Institute of Photonics and Electronics, Academy of Sciences of the Czech Republic, Praha, Czech Republic.

出版信息

Electromagn Biol Med. 2013 Sep;32(3):401-8. doi: 10.3109/15368378.2012.735207. Epub 2013 Jan 16.

Abstract

Fröhlich model describes emission of electromagnetic field in the interior of biological cells by oscillating polar units, now mostly identified with microtubule filaments. Central element of this theory is the system of rate equations for the quantum occupancy numbers n i of collective oscillation modes. These equations describe both linear and nonlinear properties of the system; presence of the latter can lead to condensation of the incoming energy into the lowest frequency mode - a phenomenon deemed to be of major importance for cell's biochemistry, because the excited mode can engage in chemical reactions while the major part of the system remains near the equilibrium, not exposed to energetic stress. This paper explores, using a simple model, the influence of strong static electric field created by mitochondria flanking the microtubules on nonlinear interactions and, in turn, on occupancy numbers. The computed results show that simultaneous presence of both sufficient metabolic pumping and adequately elevated static electric field is necessary for the full unfolding of the hallmark properties of the Fröhlich model. It is suggested that cancer-related mitochondrial dysfunction leading to metabolic transformation has additional adverse effect mediated by diminution of static fields which in turn reduces the nonlinear processes in the Fröhlich systems, essential for energy condensation in the fundamental mode.

摘要

弗罗利希模型描述了生物细胞内部由振荡极性单元发射的电磁场,现在大多认为这些单元与微管细丝有关。该理论的核心要素是集体振荡模式的量子占据数(n_i)的速率方程组。这些方程描述了系统的线性和非线性特性;后者的存在会导致入射能量凝聚到最低频率模式——这一现象被认为对细胞生物化学至关重要,因为被激发的模式可以参与化学反应,而系统的大部分仍保持在平衡附近,不会受到能量压力。本文使用一个简单模型探讨了微管两侧线粒体产生的强静电场对非线性相互作用进而对占据数的影响。计算结果表明,充分的代谢泵浦和足够高的静电场同时存在,对于弗罗利希模型标志性特性的充分展现是必要的。研究表明,导致代谢转变的癌症相关线粒体功能障碍具有额外的不良影响,这种影响是由静电场减弱介导的,而静电场减弱反过来又减少了弗罗利希系统中的非线性过程,而这些过程对于基模中的能量凝聚至关重要。

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