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A hypothesis can be a simple sentence or statement about a property or any phenomenon observed or predicted for a population. It is usually a claim about a  property of the population. It can be stated for any field observations or experiments. A hypothesis statement cannot be said to be right or wrong as it is merely a statement. It needs to be tested through an elaborate data collection process and an appropriate statistical test. A hypothesis should be a general but not a vague...
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Amyotrophic lateral sclerosis: The complement and inflammatory hypothesis.

Anne-Lene Kjældgaard1, Katrine Pilely2, Karsten Skovgaard Olsen3

  • 1Laboratory of Molecular Medicine, Department of Clinical Immunology, Diagnostic Centre, Section 7631; Department of Neuroanaesthesiology.

Molecular Immunology
|June 24, 2018
PubMed
Summary
This summary is machine-generated.

Amyotrophic lateral sclerosis (ALS) involves the innate immune system, particularly the complement system. Aberrant complement activation may drive ALS pathology, suggesting it as a therapeutic target.

Keywords:
Amyotrophic lateral sclerosisComplementDying-back mechanismInnate immunityLectin pathwayMicroglia

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Area of Science:

  • Neuroimmunology
  • Neurodegenerative Diseases

Background:

  • Amyotrophic lateral sclerosis (ALS) is a fatal motor neuron disease with unknown causes.
  • The innate immune system, especially the complement system, plays roles beyond the central nervous system.
  • Emerging evidence suggests complement system dysregulation contributes to ALS pathophysiology.

Purpose of the Study:

  • To review the role of the innate immune system in ALS.
  • To highlight the complement system's involvement in ALS.
  • To propose ficolin-3 as a potential factor in ALS.

Main Methods:

  • Literature review focusing on innate immunity and ALS.
  • Analysis of evidence linking complement activation to ALS.
  • Exploration of the lectin pathway's role, specifically ficolin-3.

Main Results:

  • The innate immune system, including the complement system, is implicated in ALS.
  • Aberrant complement activation, both central and systemic, may contribute to ALS.
  • A 'dying-back' mechanism suggests ALS onset may occur outside the blood-brain barrier.

Conclusions:

  • The innate immune system represents a potential therapeutic target for ALS.
  • Ficolin-3 involvement in the lectin pathway warrants further investigation in ALS.
  • Rethinking ALS as a disease originating outside the CNS is crucial for understanding its mechanisms.