Because of different mechanism of electro-signaling in myelinated axons than in dendrites or unmyelinated axons, the role of the myelin needs to be reconsidered upon new premises in distinction to conventional cable model. It occurs that the latter model is inapplicable for so-called saltatory conduction in myelinated axons and the former imagination on the role of the myelin based on the cable model is confusing. We show how the myelin sheath of axons controls the electro-signaling in myelinated neurons upon a wave-type ionic oscillation model of electro-signaling, ion plasmon-polariton model, in close agreement with observations of the saltatory conduction not reachable within traditional cable model approach. This is of particular importance for better understanding of malfunctions of neuron communication due to demyelination diseases and for the strategy of future therapy methods at paralysis and at demyelination syndromes. The new mechanism of signaling in myelinated neurons is also supported by recent advances in recognition of so-called micro-saltatory conduction in C-fibers of pain sensation, also exceeding the range of applicability of the conventional cable model.
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http://dx.doi.org/10.1016/j.neuroscience.2022.10.002 | DOI Listing |
Biomater Sci
January 2025
Shenzhen Key Laboratory of Smart Healthcare Engineering, Guangdong Provincial Key Laboratory of Advanced Biomaterials, Department of Biomedical Engineering, Southern University of Science and Technology, 1088 Xueyuan Boulevard, Shenzhen, Guangdong 518055, China.
Photothermal treatment has attracted immense interest as a promising approach for biomedical applications such as cancer ablation, yet its effectiveness is often limited by insufficient laser penetration and challenges in achieving efficient targeting of photothermal agents. Here we developed a transvascular interventional photothermal therapy (Ti-PTT), which employed a small-sized microcatheter (outer diameter: 0.60 mm, 1.
View Article and Find Full Text PDFCommun Math Phys
January 2025
Centro de Modelamiento Matemático (AFB170001), UMI-CNRS 2807, Universidad de Chile, Beauchef 851, Santiago, Chile.
Our motivation in this paper is twofold. First, we study the geometry of a class of exploration sets, called , which are naturally associated with a 2D vector-valued Gaussian Free Field : . We prove that, somewhat surprisingly, these sets are a.
View Article and Find Full Text PDFJ Biopharm Stat
January 2025
Department of Mathematics, The University of Manchester, Manchester, UK.
Biomarkers are measured repeatedly in clinical studies until a pre-defined endpoint, such as death from certain causes, is reached. Such repeated measurements may present a dynamic process for understanding when to expect the study's endpoint. Joint modelling is often employed to handle such a model.
View Article and Find Full Text PDFJ Neurosci Methods
January 2025
Department of Neurosurgery, Carl-von-Ossietzky University Oldenburg, Oldenburg, Germany; Research Center Neurosensory Science, Carl-von-Ossietzky University Oldenburg, Germany. Electronic address:
Background: Spreading depolarization (SD) is an electrophysiological phenomenon of massive neuronal depolarization that occurs in a multitude of brain injuries. Clinical studies and experimental data have linked the occurrence of SDs with secondary brain damage. However, there is a translational gap because of methodological limitations between clinical and experimental approaches focusing on short-term effects.
View Article and Find Full Text PDFProsthet Orthot Int
January 2025
Mechanical and Mechatronics Engineering Department, University of Waterloo, Waterloo, Ontario, Canada.
Knee bracing is commonly used for rehabilitation after ligament surgery. However, the effectiveness of knee bracing in preventing ligament injuries is not widely studied. This study aimed to develop a computational methodology to investigate the effectiveness of a novel type of cable-stabilized knee brace on anterior cruciate ligament (ACL) strain during single-leg jump landing.
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