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Open AccessJournal ArticleDOI

Physiological Dynamics in Demyelinating Diseases: Unraveling Complex Relationships through Computer Modeling

TLDR
This work will discuss how computational modeling applied to questions at different biological levels can help link together disparate observations and decipher complex mechanisms whose solutions are not amenable to simple reductionism.
Abstract
Despite intense research, few treatments are available for most neurological disorders. Demyelinating diseases are no exception. This is perhaps not surprising considering the multifactorial nature of these diseases, which involve complex interactions between immune system cells, glia and neurons. In the case of multiple sclerosis, for example, there is no unanimity among researchers about the cause or even which system or cell type could be ground zero. This situation precludes the development and strategic application of mechanism-based therapies. We will discuss how computational modeling applied to questions at different biological levels can help link together disparate observations and decipher complex mechanisms whose solutions are not amenable to simple reductionism. By making testable predictions and revealing critical gaps in existing knowledge, such models can help direct research and will provide a rigorous framework in which to integrate new data as they are collected. Nowadays, there is no shortage of data; the challenge is to make sense of it all. In that respect, computational modeling is an invaluable tool that could, ultimately, transform how we understand, diagnose, and treat demyelinating diseases.

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Struggling for the dignity of women with Relapsing-Remitting Multiple Sclerosis: An interpretative phenomenological single case study analysis

TL;DR: In this paper, the meaning of dignity for a woman with relapsing-remitting multiple sclerosis was explored based on interpretative phenomenological analysis, and five core themes were related to fulfilling life, unfair judging, dependence on others, disregard and ignoring, respect and support.
Journal ArticleDOI

Extreme Glycemic Fluctuations Debilitate NRG1, ErbB Receptors and Olig1 Function: Association with Regeneration, Cognition and Mood Alterations During Diabetes

TL;DR: In this paper, the alterations in NRG1, ErbB receptor subtypes were assessed to study the regenerative potential, both in rodents as well as in neuronal and glial cell models of hyperglycemia and hypoglycemic insults during hyper glycemia.
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Reaction-diffusion models in weighted and directed connectomes

TL;DR: This study examines more detailed connectomes with edge weighting and orientation properties, in which reciprocal neuronal connections are also considered, and finds that demyelination modeling by connectivity weight modulation changes the oscillations of the target region of the mechanosensitive pathway.
Journal ArticleDOI

A method to deliver patterned electrical impulses to Schwann cells cultured on an artificial axon.

TL;DR: An in vitro model where an electroconductive carbon fiber acts as an artificial axon provides only the biophysical characteristics of an axon but does not contribute any molecular signaling is developed and will likely make feasible to investigate the response of Schwann cells to patterned electrical impulses in the future.
References
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Journal ArticleDOI

Heterogeneity of multiple sclerosis lesions: implications for the pathogenesis of demyelination.

TL;DR: At a given time point of the disease, the patterns of demyelination were heterogeneous between patients, but were homogenous within multiple active lesions from the same patient, suggesting that MS may be a disease with heterogeneous pathogenetic mechanisms.
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Currents carried by sodium and potassium ions through the membrane of the giant axon of Loligo

TL;DR: The identity of the ions which carry the various phases of the membrane current is chiefly concerned with sodium ions, since there is much evidence that the rising phase of the action potential is caused by the entry of these ions.
Journal ArticleDOI

Cognitive dysfunction in multiple sclerosis. I. Frequency, patterns, and prediction

TL;DR: Cognitive impairment in multiple sclerosis patients was not significantly associated with illness duration, depression, disease course, or medication usage, but was significantly (albeit weakly) correlated with physical disability.
Journal ArticleDOI

Loss of Functional Suppression by CD4+CD25+ Regulatory T Cells in Patients with Multiple Sclerosis

TL;DR: A significant decrease in the effector function of CD4+CD25hi regulatory T cells from peripheral blood of patients with MS as compared with healthy donors is reported.
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