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Related Concept Videos

Multiple Sclerosis l: Introduction01:19

Multiple Sclerosis l: Introduction

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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...
5
Myasthenia Gravis ll: Pathophysiology01:22

Myasthenia Gravis ll: Pathophysiology

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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...
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T Cell Types and Functions01:24

T Cell Types and Functions

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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...
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Encephalitis ll: Pathophysiology01:26

Encephalitis ll: Pathophysiology

11
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...
11
Cell-mediated Immune Responses01:40

Cell-mediated Immune Responses

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Overview
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Related Experiment Video

Updated: Apr 21, 2026

An Ex vivo Model of an Oligodendrocyte-directed T-Cell Attack in Acute Brain Slices
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[Immunopathology of multiple sclerosis].

Francisco J Quintana1, Soledad Pérez-Sánchez, Mauricio F Farez

  • 1Center for Neurologic Diseases, Department of Neurology, Brigham and Women's Hospital, Harvard Medical School, Boston, USA.

Medicina
|October 28, 2014
PubMed
Summary

Multiple sclerosis (MS) is an inflammatory central nervous system disease causing disability in young adults. This review explores the link between immune responses and neurodegeneration in MS.

Keywords:
multiple sclerosispathogenesis

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Area of Science:

  • Neuroimmunology
  • Central Nervous System Disorders

Context:

  • Multiple sclerosis (MS) is a primary cause of neurological disability in young adults.
  • The etiology of MS involves complex interactions between genetic predisposition and environmental triggers.
  • Current understanding suggests an autoimmune basis leading to neuronal damage.

Purpose:

  • To elucidate the intricate relationship between immune system dysregulation and neurodegeneration in multiple sclerosis.
  • To review the current scientific literature on the autoimmune mechanisms underlying MS pathogenesis.

Summary:

  • MS involves inflammation and demyelination within the central nervous system.
  • Evidence indicates a multifactorial etiology involving genetic and environmental factors.
  • The disease process is characterized by an autoimmune response targeting neural tissues, leading to degeneration.

Impact:

  • Understanding the immune-neurodegeneration axis in MS is crucial for developing targeted therapies.
  • This review provides insights into potential therapeutic strategies aimed at modulating immune responses to prevent neuronal loss.
  • Further research into these mechanisms could lead to improved management and treatment outcomes for MS patients.