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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...
Role of Matrix Metalloproteases in Degradation of ECM01:23

Role of Matrix Metalloproteases in Degradation of ECM

Matrix metalloproteases (MMPs) are enzymes involved in the hydrolysis of proteins and glycoproteins of the extracellular matrix. MMPs are essential for the migration and proliferation of cells through the dense matrix network, throughout embryonic development, and throughout morphogenesis. The first MMP activity discovered was a collagenase in a tadpole's tail undergoing metamorphosis. The active collagen deposition and modifications lead to the morphogenesis of tadpoles into the adult body.
A...
Amyloid Fibrils03:03

Amyloid Fibrils

Amyloid fibrils are aggregates of misfolded proteins.  Under most circumstances, misfolded proteins are either refolded by chaperone proteins or degraded by the proteasome. However, in the case of a mutation or a disease, these proteins can accumulate to form large clusters and often further assemble to form elongated fibers, called fibrils. 
Amyloid deposits were observed as early as 1639 in the liver and the spleen.   In 1854, Rudolph Virchow performed iodine staining, normally used to...
Chemical Synapses01:26

Chemical Synapses

Chemical synapses are specialized sites between two neurons or between a neuron and a non-neuronal cell like a muscle, glandular or sensory cell.
Because chemical synapses depend on the release of neurotransmitter molecules from synaptic vesicles to pass on their signal, there is an approximately one millisecond delay between when the axon potential reaches the presynaptic terminal and when the neurotransmitter leads to opening of postsynaptic ion channels. Additionally, this signaling is...
Chemical Synapses01:26

Chemical Synapses

Chemical synapses are specialized sites between two neurons or between a neuron and a non-neuronal cell like a muscle, glandular or sensory cell.
Because chemical synapses depend on the release of neurotransmitter molecules from synaptic vesicles to pass on their signal, there is an approximately one millisecond delay between when the axon potential reaches the presynaptic terminal and when the neurotransmitter leads to opening of postsynaptic ion channels. Additionally, this signaling is...

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Related Experiment Video

Updated: Jun 3, 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

Matrix metalloproteinases, synaptic injury, and multiple sclerosis.

Arek Szklarczyk1, Katherine Conant

  • 1Jagiellonian Center of Innovation Kraków, Poland.

Frontiers in Psychiatry
|March 23, 2011
PubMed
Summary

Multiple sclerosis involves immune-mediated myelin damage in the central nervous system. This research explores potential synaptic injury and the role of matrix metalloproteinases (MMPs) in some patients.

Keywords:
ICAMMMPadhesion moleculecadherinmatrix metalloproteinasemultiple sclerosissynapse

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Comprehensive Autopsy Program for Individuals with Multiple Sclerosis
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Comprehensive Autopsy Program for Individuals with Multiple Sclerosis

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Related Experiment Videos

Last Updated: Jun 3, 2026

Rat Model of Widespread Cerebral Cortical Demyelination Induced by an Intracerebral Injection of Pro-Inflammatory Cytokines
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Published on: September 21, 2021

Scoring Central Nervous System Inflammation, Demyelination, and Axon Injury in Experimental Autoimmune Encephalomyelitis
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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

Area of Science:

  • Neuroscience
  • Immunology
  • Pathophysiology

Background:

  • Multiple sclerosis (MS) is a central nervous system disease characterized by immune-mediated myelin damage.
  • Existing literature provides comprehensive reviews on MS pathophysiology.

Purpose of the Study:

  • To investigate the potential for synaptic injury in a subset of multiple sclerosis patients.
  • To explore the involvement of matrix metalloproteinases (MMPs) in MS-related synaptic damage.

Main Methods:

  • Review of existing literature on multiple sclerosis.
  • Analysis of potential mechanisms linking MMPs to synaptic injury in neurological disorders.

Main Results:

  • Synaptic injury is hypothesized to occur in at least some multiple sclerosis patients.
  • Matrix metalloproteinases (MMPs) are implicated as potential contributors to this synaptic injury.

Conclusions:

  • Synaptic injury may be a significant, yet under-recognized, aspect of multiple sclerosis pathology.
  • Matrix metalloproteinases (MMPs) warrant further investigation as therapeutic targets in MS.