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Related Concept Videos

Multiple Sclerosis l: Introduction01:19

Multiple Sclerosis l: Introduction

Multiple sclerosis is a chronic autoimmune disease of the central nervous system (CNS) that affects the brain, spinal cord, and optic nerves. It is an inflammatory demyelinating disorder and a leading cause of neurological disability in young adults.EpidemiologyMS commonly begins between 20 and 40 years of age and is twice as common in women. Its exact cause remains unclear, but genetic susceptibility contributes, with higher risk in first-degree relatives and identical twins. A greater...
Myasthenia Gravis ll: Pathophysiology01:22

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The disease process of myasthenia gravis begins at the neuromuscular junction, where antibodies attack key proteins needed for muscle activation. This immune reaction weakens signal transmission, leading to the characteristic muscle fatigue and weakness that define the condition.Immune-Mediated DamageIn most individuals, antibodies target acetylcholine receptors (AChRs) on the postsynaptic membrane of muscle cells. By blocking acetylcholine binding, these antibodies prevent the nerve signal...
Parkinson's Disease: Overview01:15

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Neurodegenerative disorders are progressive diseases that cause irreversible damage and loss to neurons in specific brain areas. Examples of these disorders include Parkinson's disease, Alzheimer's disease, Multiple Sclerosis (MS), and Amyotrophic Lateral Sclerosis (ALS). These disorders share characteristics such as proteinopathies, selective neuronal vulnerability, and a complex interplay between genetic and environmental factors. The primary therapeutic goal for these conditions is to...
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Sequencing of the human genome has opened up several best-kept secrets of the genome. Scientists have identified thousands of genome variations that exist within a population. These variations can be a single nucleotide or a larger chromosomal variation.
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Related Experiment Video

Updated: Jun 27, 2026

Rat Model of Widespread Cerebral Cortical Demyelination Induced by an Intracerebral Injection of Pro-Inflammatory Cytokines
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Published on: September 21, 2021

Variants of multiple sclerosis.

Jack H Simon1, B K Kleinschmidt-DeMasters

  • 1Imaging, Portland VA Medical Center, Mail Stop P2IMAG, 3710 SW Veterans Hospital Road, Portland, OR 97207, USA. jack.simon3@va.gov

Neuroimaging Clinics of North America
|December 11, 2008
PubMed
Summary
This summary is machine-generated.

Rare multiple sclerosis variants like Devic's neuromyelitis optica (NMO) offer insights into disease pathophysiology. NMO, in particular, revealed a new water channel-based mechanism after a specific diagnostic test was developed.

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Related Experiment Videos

Last Updated: Jun 27, 2026

Rat Model of Widespread Cerebral Cortical Demyelination Induced by an Intracerebral Injection of Pro-Inflammatory Cytokines
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Published on: September 21, 2021

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Modeling Multiple Sclerosis in the Two Sexes: MOG35-55-Induced Experimental Autoimmune Encephalomyelitis
05:44

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Published on: October 13, 2023

Area of Science:

  • Neurology
  • Immunology
  • Pathophysiology

Background:

  • Classic multiple sclerosis (MS) variants, including Devic's neuromyelitis optica (NMO), Balo's concentric Sclerosis, Schilder's disease, and Marburg MS, are rare but significant in clinical practice.
  • These variants are crucial in the differential diagnosis of severe acute demyelinating diseases, such as MS and acute disseminated encephalomyelitis.

Purpose of the Study:

  • To highlight the pathophysiological significance of rare multiple sclerosis variants.
  • To discuss the diagnostic importance of these variants in severe demyelinating conditions.
  • To emphasize the discovery of a novel pathophysiology in NMO.

Main Methods:

  • Review of existing literature on multiple sclerosis variants.
  • Analysis of diagnostic criteria and differential diagnoses for severe demyelinating diseases.
  • Examination of recent advancements in NMO diagnostics and pathophysiology.

Main Results:

  • Rare MS variants provide valuable insights into disease mechanisms.
  • NMO diagnosis is critical for differentiating severe demyelinating conditions.
  • A new water channel-based pathophysiology for NMO has been identified.

Conclusions:

  • Understanding rare MS variants enhances knowledge of demyelinating disease pathophysiology.
  • The identification of specific biomarkers and pathophysiological pathways, as seen in NMO, is crucial for accurate diagnosis and treatment.
  • Further research into these variants may reveal new therapeutic targets.