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Related Concept Videos

Myasthenia Gravis ll: Pathophysiology01:22

Myasthenia Gravis ll: Pathophysiology

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...
Autoimmune Disorders01:29

Autoimmune Disorders

Autoimmune diseases are a group of disorders in which the body's immune system mistakenly attacks its own cells, tissues, and organs. This results from an overactive immune response against substances and tissues normally present in the body. Let's delve into the concept and mechanism of autoimmune diseases from an immune system point of view, explore different causes and examples of such diseases, and discuss potential solutions.
Concept and Mechanism of Autoimmune Diseases
The immune system...
Myasthenia Gravis: Overview and Treatment01:20

Myasthenia Gravis: Overview and Treatment

Myasthenia gravis is a neuromuscular transmission disorder characterized by weakness and increased fatigability of skeletal muscles. It is an autoimmune disease affecting approximately one in 2000 people, where antibodies against the α1 subunit of nicotinic acetylcholine receptors are produced.
These antibodies interfere with the function of the nicotinic receptors in three ways: by binding to the receptor and disrupting acetylcholine binding; by causing cross-linking of receptors which leads...
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: Diagnostic Tests01:15

Myasthenia Gravis: Diagnostic Tests

Myasthenia gravis is an autoimmune condition affecting neuromuscular transmission, causing generalized weakness in skeletal muscles. Initial diagnoses rely on patients' signs, symptoms, and medical history. The challenge lies in distinguishing myasthenia from other muscular dystrophies. An important diagnostic feature is the significant improvement of symptoms after administering anticholinesterase inhibitors.
The edrophonium test is a diagnostic tool for myasthenia gravis. It involves...

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Updated: May 20, 2026

Induction of Paralysis and Visual System Injury in Mice by T Cells Specific for Neuromyelitis Optica Autoantigen Aquaporin-4
09:29

Induction of Paralysis and Visual System Injury in Mice by T Cells Specific for Neuromyelitis Optica Autoantigen Aquaporin-4

Published on: August 21, 2017

Autoimmune myelopathies.

Eoin P Flanagan, Vanda A Lennon, Sean J Pittock

    Continuum (Minneapolis, Minn.)
    |July 20, 2012
    PubMed
    Summary
    This summary is machine-generated.

    Identifying autoimmune myelopathies is crucial for effective treatment. Serologic biomarkers and MRI findings aid in diagnosing these spinal cord conditions, guiding therapy and improving patient outcomes.

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    Flow Cytometric Analysis of Lymphocyte Infiltration in Central Nervous System during Experimental Autoimmune Encephalomyelitis

    Published on: November 17, 2020

    Area of Science:

    • Neurology
    • Immunology
    • Oncology

    Background:

    • Inflammatory myelopathies encompass a wide range of conditions affecting the spinal cord.
    • Autoimmune myelopathies are a significant subset, characterized by the immune system attacking the spinal cord.
    • Advances in diagnostics are crucial for understanding and managing these complex neurological disorders.

    Purpose of the Study:

    • To highlight the role of serologic biomarkers and neuroimaging in diagnosing autoimmune myelopathies.
    • To discuss the implications of these diagnostic tools for disease classification and treatment strategies.
    • To emphasize the potential for developing targeted therapies for autoimmune spinal cord attacks.

    Main Methods:

    • Review of current literature on autoimmune myelopathies.
    • Analysis of the utility of serologic biomarkers such as aquaporin-4 and collapsin response-mediator protein-5 (CRMP-5) immunoglobulin (Ig)Gs.
    • Evaluation of neuroimaging techniques, particularly MRI, for identifying characteristic patterns of spinal cord abnormalities.

    Main Results:

    • Serologic biomarkers (e.g., AQP4-IgG, CRMP-5-IgG) confirm autoimmune attacks on the spinal cord.
    • MRI reveals distinctive patterns, including longitudinally extensive transverse myelitis and tract-specific changes, suggestive of autoimmune etiology.
    • Biomarkers facilitate precise disease classification, aid in cancer detection, predict prognosis, and inform therapeutic decisions.

    Conclusions:

    • Serologic biomarkers and MRI are essential tools for diagnosing autoimmune myelopathies.
    • These advancements enable more accurate disease classification and personalized treatment planning.
    • Future research holds promise for developing antigen-specific therapies to improve long-term management and prevent relapses.