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Mild systematic and severe focal demyelination correspond to hereditary (CMT1A) and acquired (CIDP, GBS and MMN) neuropathies (Table 1). It was also found that 70% systematic demyelination is insufficient to cause symptoms and 96% is required for conduction block at a single node [18]. Thus, there is a large safety factor for focal demyelination. With their temperature-dependent version of the model of the myelinated human motor nerve fiber, Stephanova and Daskalova<ref>Stephanova D.I., Daskalova M. Electrotonic potentials in simulated chronic inflammatory demyelinating polyneuropathy at 20 °C–42 °C. J. Integr. Neurosci. 2015;27:1–18. doi: 10.1142/S0219635215500119. [PubMed] [CrossRef] [Google Scholar]</ref> showed that the electrotonic potentials in patients with CIDP are in high risk for blocking during hypo- and even mild hyperthermia and suggest mechanisms involving increased magnitude of polarizing nodal and depolarizing internodal electrotonic potentials, inward rectifier K+ and leak K+ currents increase with temperature, and the accommodation to long-lasting hyperpolarization is greater than to depolarization. | Mild systematic and severe focal demyelination correspond to hereditary (CMT1A) and acquired (CIDP, GBS and MMN) neuropathies (Table 1). It was also found that 70% systematic demyelination is insufficient to cause symptoms and 96% is required for conduction block at a single node [18]. Thus, there is a large safety factor for focal demyelination. With their temperature-dependent version of the model of the myelinated human motor nerve fiber, Stephanova and Daskalova<ref>Stephanova D.I., Daskalova M. Electrotonic potentials in simulated chronic inflammatory demyelinating polyneuropathy at 20 °C–42 °C. J. Integr. Neurosci. 2015;27:1–18. doi: 10.1142/S0219635215500119. [PubMed] [CrossRef] [Google Scholar]</ref> showed that the electrotonic potentials in patients with CIDP are in high risk for blocking during hypo- and even mild hyperthermia and suggest mechanisms involving increased magnitude of polarizing nodal and depolarizing internodal electrotonic potentials, inward rectifier K+ and leak K+ currents increase with temperature, and the accommodation to long-lasting hyperpolarization is greater than to depolarization. | ||
{| class="wikitable" | |||
Table 1 | |+ | ||
Correspondence between types of demyelination and diseases according to Stephanova and Dimitrov.<ref name=":3" /> | ! colspan="2" |Table 1 | ||
Correspondence between types of demyelination and diseases according to Stephanova and Dimitrov.<ref name=":3" /> | |||
|- | |||
! colspan="1" rowspan="1" |Type of Demyelination | |||
! colspan="1" rowspan="1" |Corresponding Disease (PNS) | |||
|- | |||
| colspan="1" rowspan="1" |Internodal systematic demyelination (ISD) | |||
| colspan="1" rowspan="1" |Charcot-Marie-Tooth Disease Type 1A (CMT1A) | |||
|- | |||
| colspan="1" rowspan="1" |Paranodal systematic demyelination (PSD) | |||
| colspan="1" rowspan="1" |Chronic inflammatory demyelinating polyneuropathy (CIDP) | |||
|- | |||
| colspan="1" rowspan="1" |Paranodal + internodal demyelination (PISD) | |||
| colspan="1" rowspan="1" |Chronic inflammatory demyelinating polyneuropathy (CIPD) subtypes | |||
|- | |||
| colspan="1" rowspan="1" |Internodal focal demyelination (IFD) | |||
| colspan="1" rowspan="1" |Guillain-Barré (GBS) | |||
|- | |||
| colspan="1" rowspan="1" |Paranodal focal demyelination (PFD) | |||
| colspan="1" rowspan="1" |Multifocal Motor Neuropathy (MMN) | |||
|- | |||
| colspan="1" rowspan="1" |Paranodal + focal demyelination (PIFD) | |||
| colspan="1" rowspan="1" |Multifocal Motor Neuropathy (MMN) | |||
|} | |||
==== Simple Models and Nonlinear Dynamical Analysis ==== | ==== Simple Models and Nonlinear Dynamical Analysis ==== |
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