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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...
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Parkinson disease (PD) is a progressive neurodegenerative disorder primarily affecting movement, with additional non-motor features. Its pathophysiology involves complex interactions among genetic susceptibility, environmental exposures, and cellular dysfunction, including dopaminergic neuron loss, protein aggregation, and mitochondrial impairment.Selective NeurodegenerationA key feature is the degeneration of dopaminergic neurons in the substantia nigra pars compacta, leading to reduced...
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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...
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Updated: Jun 11, 2026

Modeling Multiple Sclerosis in the Two Sexes: MOG35-55-Induced Experimental Autoimmune Encephalomyelitis
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Multiple sclerosis: risk factors, prodromes, and potential causal pathways.

Sreeram V Ramagopalan1, Ruth Dobson, Ute C Meier

  • 1Blizard Institute of Cell and Molecular Science, Queen Mary University of London, Barts and The London School of Medicine and Dentistry, London, UK.

The Lancet. Neurology
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Understanding the early stages of multiple sclerosis (MS) is key to prevention. Research into the disease

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Area of Science:

  • Neurology
  • Epidemiology

Background:

  • Multiple sclerosis (MS) is a prevalent, complex neurological disorder with unknown precise etiology.
  • Epidemiological data suggest significant contributions from both genetic and environmental factors.
  • Environmental influences acting years before clinical onset indicate a potential prodromal phase for MS.

Purpose of the Study:

  • To highlight the need for preventative strategies for multiple sclerosis.
  • To explore the potential for reversing early disease processes during the prodromal phase.
  • To emphasize the importance of studying high-risk individuals for understanding MS etiology.

Main Methods:

  • Monitoring endophenotypes resulting from associated risk factors.
  • Investigating causal pathways and endophenotypes in MS.
  • Identifying and studying individuals at high risk for developing MS.

Main Results:

  • The precise cause of MS remains unknown, but genetic and environmental factors are implicated.
  • Evidence supports an environmental role preceding clinical MS manifestation, suggesting a prodromal phase.
  • Current knowledge of MS causal pathways and endophenotypes is limited.

Conclusions:

  • Preventing MS requires understanding its early development and potential prodromal phase.
  • Studying high-risk individuals offers a critical opportunity to elucidate the MS causal cascade.
  • Identifying and monitoring endophenotypes are essential for studying the MS prodrome and developing preventative interventions.