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

Cell-mediated Immune Responses

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T Cell Activation and Clonal Selection01:22

T Cell Activation and Clonal Selection

T cells are integral to our adaptive immune system, recognizing and effectively responding to foreign antigens. T cell activation and clonal selection are pivotal in orchestrating this immune response. This article elucidates these mechanisms, detailing the roles of cluster of differentiation (CD) markers, major histocompatibility complex (MHC) molecules, costimulatory signals, and the process of clonal selection.
Naive T cells that have not yet encountered an antigen express two primary CD...
Immunological Memory01:23

Immunological Memory

Immunological memory, a pivotal pillar of the adaptive immune system, is responsible for the body's ability to remember and respond more swiftly and effectively to previously encountered pathogens. This remarkable feature is what makes vaccines so effective in preventing diseases.
What is Immunological Memory?
Immunological memory is an integral function of the immune system that allows it to recognize and react more rapidly and effectively to pathogens previously encountered. This feature is...

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Quantification of Autoreactive Antibodies in Mice upon Experimental Autoimmune Encephalomyelitis
05:55

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Published on: December 1, 2023

Immunologic mechanisms of multiple sclerosis.

Elliot M Frohman1, Todd Eagar, Nancy Monson

  • 1Department of Neurology, University of Texas Southwestern Medical Center at Dallas, 5323 Harry Hines Boulevard, Dallas, TX 75235, USA. elliot.frohman@utsouthwestern.edu

Neuroimaging Clinics of North America
|December 11, 2008
PubMed
Summary

Multiple sclerosis (MS) is a leading cause of neurological disability in young adults. Understanding the inflammatory mechanisms behind MS relapses and progression is crucial for developing effective treatments.

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Area of Science:

  • Neurology
  • Immunology
  • Neuroscience

Background:

  • Multiple sclerosis (MS) is a primary cause of progressive neurological disability in young adults in developed nations.
  • Clinical suspicion arises from acute neurological attacks or steady functional decline.
  • MS is characterized by multiphasic inflammatory events within the central nervous system.

Purpose of the Study:

  • To elucidate the underlying mechanisms of multiple sclerosis (MS) pathogenesis.
  • To understand the triggers and sequence of inflammatory events in MS.
  • To identify factors contributing to MS predilection and disease progression.

Main Methods:

  • This abstract does not specify methods.
  • The study focuses on the pathophysiology and proposed mechanisms of MS.
  • Review and synthesis of existing hypotheses regarding MS development.

Main Results:

  • The pathophysiology of acute MS exacerbations involves inflammation in specific central nervous system tracts.
  • Current understanding of MS mechanisms is incomplete.
  • Further research is needed to fully comprehend the disease's development.

Conclusions:

  • Inflammation is central to the acute phases of multiple sclerosis.
  • The precise triggers and progression pathways of MS remain incompletely understood.
  • Significant gaps in knowledge necessitate further investigation into MS pathogenesis.