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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...
Encephalitis ll: Pathophysiology01:26

Encephalitis ll: Pathophysiology

Encephalitis is inflammation of the brain parenchyma caused by direct viral invasion or immune-mediated mechanisms triggered by infections or tumors. Both processes lead to neuronal injury, disrupted neurotransmission, and diverse neurological symptoms, often with overlapping clinical and pathological features.Autoimmune EncephalitisIn autoimmune encephalitis, antibodies target neuronal antigens on cell surfaces, synapses, or within neurons. A key example is anti-NMDAR encephalitis, which can...
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...
T Cell Types and Functions01:24

T Cell Types and Functions

When T cells with CD4 markers are activated, they give rise to two types of effector cells: helper T cells and regulatory T cells. Meanwhile, T cells with CD8 markers differentiate into effector cytotoxic T cells. The differentiation of CD4 T cells into helper T cell subsets, such as Th1, Th2, and Th17 cells, is dependent on the antigen type, antigen-presenting cell, and regulatory cytokines.
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
Immune Response Against Viral Pathogens01:29

Immune Response Against Viral Pathogens

The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
Cell-mediated Immune Responses01:40

Cell-mediated Immune Responses

Overview

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Quantification of Autoreactive Antibodies in Mice upon Experimental Autoimmune Encephalomyelitis
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Quantification of Autoreactive Antibodies in Mice upon Experimental Autoimmune Encephalomyelitis

Published on: December 1, 2023

Immunopathogenesis of multiple sclerosis.

Michael K Racke1

  • 1The Helen C. Kurtz Chair of Neurology, The Ohio State University Medical Center, 395 West 12 Avenue, Columbus, OH 43210 USA.

Annals of Indian Academy of Neurology
|February 26, 2010
PubMed
Summary
This summary is machine-generated.

Multiple sclerosis (MS) involves immune cells attacking the central nervous system (CNS). Understanding complex MS pathophysiology, including inflammation and axonal damage, is key to developing new therapies.

Keywords:
Magnetic resonance imagingmultiple sclerosispathogenesisreview

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Area of Science:

  • Neuroimmunology
  • Central Nervous System (CNS) Disorders

Background:

  • Multiple sclerosis (MS) is a suspected autoimmune disease targeting myelin in the CNS.
  • MS exacerbations involve inflammation, while disability progression is linked to axonal damage.
  • The pathophysiology of MS is complex, involving CD8+ T lymphocytes, B cells, and Th17 cells.

Purpose of the Study:

  • To explore the complex pathophysiology of multiple sclerosis.
  • To identify pathways involved in axonal damage and remyelination failure in MS.
  • To highlight the development of novel monitoring tools and therapeutic strategies for MS.

Main Methods:

  • Review of current understanding of MS pathophysiology.
  • Identification of key cell populations and molecular pathways involved in MS plaque development.
  • Discussion of emerging neuroimaging and biomarker development for MS.

Main Results:

  • MS involves a complex interplay of immune cells (CD8+ T cells, B cells, Th17 cells) and inflammatory responses.
  • Axonal damage and degeneration occur early and persist throughout MS progression.
  • Pathways inhibiting axonal regeneration and remyelination have been identified.

Conclusions:

  • The complex pathophysiology of MS requires a multifaceted approach to treatment.
  • Understanding molecular and cellular mechanisms is crucial for developing effective MS therapies.
  • Novel diagnostic and therapeutic strategies are emerging for MS management.