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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

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...
Disorders of the Nervous Tissue01:28

Disorders of the Nervous Tissue

Nervous tissue is a vital component of the human body's communication system, enabling us to perceive and respond to stimuli. However, like all other tissues, it is vulnerable to disorders and diseases that can significantly impact our neurological functioning.
Homeostatic Imbalances:
Alzheimer's disease manifests as a gradual decline in memory and cognitive abilities, attributed to the buildup of amyloid plaques and neurofibrillary tangles in the brain.
Parkinson's disease arises from the...
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...
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...
Psychosis: Pathophysiology of Schizophrenia and Other Psychotic Disorders01:27

Psychosis: Pathophysiology of Schizophrenia and Other Psychotic Disorders

Schizophrenia is a neurodevelopmental disorder whose origins are rooted in complex genetic components. Despite our burgeoning understanding, the pathophysiology of this disorder remains incompletely deciphered.
Researchers have identified genetic factors that increase susceptibility to schizophrenia, underscoring the intricate interplay between genetics and environment in disease development. At the core of schizophrenia's pathophysiology is excessive dopaminergic neurotransmission within the...

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Related Experiment Video

Updated: Jul 20, 2026

Rat Model of Widespread Cerebral Cortical Demyelination Induced by an Intracerebral Injection of Pro-Inflammatory Cytokines
09:46

Rat Model of Widespread Cerebral Cortical Demyelination Induced by an Intracerebral Injection of Pro-Inflammatory Cytokines

Published on: September 21, 2021

[Etiology of multiple sclerosis].

David-Axel Laplaud1, Christian Confavreux

  • 1Service de neurologie, Inserm U643, CIC de neurologie, CHU de Nantes, Hôpital G. et R. Laennec, 44093 Nantes 01. david.laplaud@chu-nantes.fr

La Revue Du Praticien
|September 5, 2006
PubMed
Summary

Multiple sclerosis (MS) involves immune system attacks on the central nervous system, causing demyelination. Emerging research suggests MS is not solely an immune disorder but also involves neurobiological factors.

Area of Science:

  • Neuroimmunology
  • Central Nervous System Disorders
  • Demyelinating Diseases

Background:

  • Multiple sclerosis (MS) is an inflammatory central nervous system disease.
  • It causes demyelinating lesions in young adults.
  • Autoreactive T cells targeting myelin are implicated.

Purpose of the Study:

  • To explore the complex etiology of multiple sclerosis.
  • To investigate the roles of genetic, environmental, and immune regulatory factors.
  • To highlight the potential involvement of neurobiological factors.

Main Methods:

  • Review of current findings on MS pathogenesis.
  • Analysis of immune system dysregulation, including regulatory T cells.
  • Consideration of potential environmental triggers and genetic predispositions.

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Comprehensive Autopsy Program for Individuals with Multiple Sclerosis
09:41

Comprehensive Autopsy Program for Individuals with Multiple Sclerosis

Published on: July 19, 2019

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

Quantification of Autoreactive Antibodies in Mice upon Experimental Autoimmune Encephalomyelitis

Published on: December 1, 2023

Related Experiment Videos

Last Updated: Jul 20, 2026

Rat Model of Widespread Cerebral Cortical Demyelination Induced by an Intracerebral Injection of Pro-Inflammatory Cytokines
09:46

Rat Model of Widespread Cerebral Cortical Demyelination Induced by an Intracerebral Injection of Pro-Inflammatory Cytokines

Published on: September 21, 2021

Comprehensive Autopsy Program for Individuals with Multiple Sclerosis
09:41

Comprehensive Autopsy Program for Individuals with Multiple Sclerosis

Published on: July 19, 2019

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

Quantification of Autoreactive Antibodies in Mice upon Experimental Autoimmune Encephalomyelitis

Published on: December 1, 2023

Main Results:

  • T cell activation against myelin is a key feature of MS.
  • Genetic and environmental factors are suspected but not confirmed triggers.
  • Immune dysregulation, particularly involving regulatory T cells, may contribute.

Conclusions:

  • Multiple sclerosis involves complex immune system activation.
  • The exact triggers remain elusive, despite suspected genetic and environmental links.
  • Future research must explore specific neurobiological factors in MS etiology.